Article
Polymer Science
Elnara R. Zhiganshina, Maxim Arsenyev, Dmytro A. Chubich, Danila A. Kolymagin, Anastasia Pisarenko, Dmitry S. Burkatovsky, Evgeny Baranov, Alexei G. Vitukhnovsky, Andrew N. Lobanov, Rilond P. Matital, Diana Ya Aleynik, Sergey A. Chesnokov
Summary: The study focused on the synthesis and characterization of a one-component methacrylate material containing the photoinitiator 4MetBAC. The material was used to induce polymerization and create intricate polymer nanostructures, demonstrating biosafety in biological applications. This approach shows promise for creating high-resolution three-dimensional topological structures for optoelectronic and biological applications.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Anton E. E. Egorov, Alexey A. A. Kostyukov, Denis A. A. Shcherbakov, Danila A. A. Kolymagin, Dmytro A. A. Chubich, Rilond P. P. Matital, Maxim V. V. Arsenyev, Ivan D. D. Burtsev, Mikhail G. G. Mestergazi, Elnara R. R. Zhiganshina, Sergey A. A. Chesnokov, Alexei G. G. Vitukhnovsky, Vladimir A. A. Kuzmin
Summary: Micron- and submicron-scale 3D structure realization is now possible through two-photon photopolymerization (TPP) direct laser writing photolithography (DLW photolithography) method. To fabricate micro-optical elements with high curvature values, including X-ray microlenses, lithographic features with dimensions less than 100 nm are in demand. A photoinitiator (PI) based on a methyl methacrylate derivative of 2,5-bis(4-(dimethylamino)benzylidene) cyclopentanone was studied spectroscopically and photochemically. The enhanced intersystem crossing in the methyl methacrylate derivative leads to increased radical generation for polymerization initiation. A comprehensive study was conducted on the new photocompositions, focusing on photochemical constants, photopolymerization degree, and topology. Optimal parameters for mechanically stable structure fabrication were determined, including threshold dose parameters for lithography and sub-100 nm feature fabrication. X-ray lens microstructures were also successfully fabricated.
Article
Chemistry, Applied
Seifallah Abid, Christophe Nguyen, Morgane Daurat, Denis Durand, Bassem Jamoussi, Mireille Blanchard-Desce, Magali Gary-Bobo, Olivier Mongin, Christine O. Paul-Roth, Frederic Paul
Summary: The synthesis of new fluorenyl phthalocyanines substituted with water-solubilizing triethyleneglycol chains is described. These biocompatible molecules exhibit strong absorption and fluorescence properties, showing more promising biocompatibility in vitro on cancer cells compared to unsubstituted zinc phthalocyanine.
Article
Biochemistry & Molecular Biology
Ying Wang, Xianghuan Guo, Shaona Zhou, Leili Wang, Yanyan Fang, Limei Xing, Yuxia Zhao, Li-peng Zhang, Haixia Qiu, Jing Zeng, Ying Gu
Summary: The study evaluated the killing activities of three photosensitizers against H. pylori and preliminarily assessed the ex vivo photodynamic inactivation effect on infected mice.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Hongqian Cao, Yanfei Qi, Xibao Gao, Zi Jin Wei, Jiarui Xia, Lei Wang, Hao Wang, Yang Yang, Junbai Li
Summary: The novel peptide nanodrug, consisting of three functional motifs - bis(pyrene), FFVLK and CREKA, is used as a two-photon excited photosensitizer for precise photodynamic therapy (PDT), showing excellent two-photon imaging ability, tumor target effect and high reactive oxygen species productivity to improve treatment precision and efficiency in PDT.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Jodukathula Nagamaiah, Arnab Dutta, Sipra Sucharita Sahoo, Sameeta Sahoo, Pradeepta K. Panda
Summary: Two new 3,6,13,16-tetraalkylporphycenes were successfully synthesized using a rational approach. The lower yield of the desired alpha,alpha'-bipyrroles was explained, as the sigma-donating effect of alkylsubstituents was found to be more significant compared to positional isomeric tetraalkylporphycenes. The tetramethyl derivative exhibited a square-type core, while the tetraethyl and tetrapropyl derivatives displayed a rectangular core due to coordination with the guest. The enhanced basicity of the macrocycles with increasing alkyl chain at the inner beta-positions could explain this phenomenon. Both the tetramethyl and tetraethyl freebase porphycenes showed enhanced fluorescence and singlet oxygen generation ability compared to tetrapropylporphycene.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Piotr Gierlich, Sebastian G. Mucha, Emma Robbins, Ligia C. Gomes-da-Silva, Katarzyna Matczyszyn, Mathias O. Senge
Summary: This study utilized the second-generation photosensitizer m-THPC as a starting point to obtain a library of compounds with improved optical properties through substitution, esterification, and Sonogashira coupling reactions. By enhancing the two-photon absorption cross-section through modification of the m-THPC skeleton, tetrafunctionalized m-THPC derivatives showed promise for application in two-photon induced PDT.
Article
Chemistry, Multidisciplinary
Lei-Lei Yang, Liang Zhang, Shu-Cheng Wan, Shuo Wang, Zhi-Zhong Wu, Qi-Chao Yang, Yao Xiao, Hexiang Deng, Zhi-Jun Sun
Summary: The combination of immune checkpoint blockade therapy and photodynamic therapy shows promising potential in inducing efficient immunogenic cell death and immune response, offering new hope for cancer treatment.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Polymer Science
Subramaniyan Ramasundaram, Sivasangu Sobha, Gurusamy Saravanakumar, Tae Hwan Oh
Summary: Polymers are carriers used for delivering therapeutic drugs and imaging probes to specific target sites. With appropriate targeting moieties, these carriers can achieve target-specific delivery at the cellular level. Recent attention has been focused on two-photon absorption (2PA)-mediated drug delivery and imaging, which offers better biocompatibility and treatment effects.
Article
Biotechnology & Applied Microbiology
Wenyao Duan, Bo Li, Wen Zhang, Jiaqi Li, Xin Yao, Yupeng Tian, Jun Zheng, Dandan Li
Summary: This study presents a new approach for designing oxygenation nanomaterials to relieve tumor hypoxia and enhance cancer treatment through oxygen-generating strategy. The combination of photodynamic therapy and sonodynamic therapy, along with the conversion of H2O2 into O-2, resulted in improved therapeutic outcome. In addition, the nanomaterial showed two-photon activity and cancer cell specific targeting capability, enabling deeper tissue penetration and precise guidance for cancer therapy.
JOURNAL OF NANOBIOTECHNOLOGY
(2022)
Article
Chemistry, Applied
Xue Wei, Wei-Bo Cui, Feng-Yi Sun, Hui Li, Jing-Fu Guo, Xue-Li Hao, Ai-Min Ren
Summary: In this paper, density functional theory (DFT) and timedependent density functional theory (TDDFT) calculations were used to study the properties of Pt(II) and Pd(II) complexes. The designed Pd(II) complex showed a large two-photon absorption cross section and long triplet excited state lifetime, making it a potential candidate for an effective two-photon absorption photosensitizer.
Article
Chemistry, Multidisciplinary
Fangmian Wei, Johannes Karges, Jinchao Shen, Lina Xie, Kai Xiong, Xiting Zhang, Liangnian Ji, Hui Chao
Summary: Photodynamic therapy (PDT) is a medical technique used for the treatment of cancer that has gained attention for its selectivity and non-invasiveness. However, the hypoxic environment in solid tumors limits its effectiveness. In this study, graphitic carbon nitride nanosheets functionalized with mitochondria-targeting iridium complexes were used to achieve oxygen self-sufficient two-photon PDT, effectively treating hypoxic tumors in a mouse model. This is the first example of using iridium complex functionalized graphitic carbon nitride nanosheets for the treatment of hypoxic tumors under clinically relevant two-photon irradiation.
Article
Engineering, Biomedical
Hongzhi Cao, Bin Fang, Jiejie Liu, Yu Shen, Jie Shen, Pan Xiang, Qin Zhou, Senio Campos De Souza, Dandan Li, Yupeng Tian, Lei Luo, Zhongping Zhang, Xiaohe Tian
Summary: The study designed multi-photon responsive photosensitizers for photodynamic therapy, demonstrating that one of the compounds could induce multiple types of cell death under three-photon exposure, providing a new strategy for developing competitive multi-photon PDT functional materials.
ADVANCED HEALTHCARE MATERIALS
(2021)
Review
Biochemistry & Molecular Biology
Emma Robbins, Stephanie Leroy-Lhez, Nicolas Villandier, Marek Samoc, Katarzyna Matczyszyn
Summary: This review discusses strategies for improving the TPA properties of photosensitizers, including promising organic and organometallic structures, and complex systems involving organic and inorganic nanoparticles. Focus is on studies providing TPA cross-section values, singlet oxygen (or other ROS), and luminescence quantum yields, crucial for potential use in PDT and diagnostics. The aim is to aid in the design and modification of novel TPA photosensitizers to exploit the features of nonlinear absorption processes.
Article
Polymer Science
Liwen Hu, Shengzu Liao, Tianze Hu, Peiling Chen, Chunxiao Wang, Ting Guo, Renqiang Yang, Lei Ying
Summary: Two-photon fluorescence bioimaging holds great promise for deep tissue imaging. By manipulating twisted intramolecular charge transfer, efficient conjugated polymers with high fluorescence quantum yields and large absorption cross-sections can be realized for two-photon fluorescence imaging and photodynamic therapy.
Article
Engineering, Environmental
Yamei Liu, Ekaterina Naumenko, Farida Akhatova, Qianli Zou, Rawil Fakhrullin, Xuehai Yan
Summary: Peptide nanoparticles fabricated through covalent self-assembly of dipeptides and genipin enhance optical scattering intensity and stability, allowing for easy visualization and tracking in cells and organisms for Enhanced dark-field hyperspectral imaging (EDF-HSI). These results provide a promising approach for visualization and analysis of biomaterial activities in vitro and in vivo.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Medicinal
Huadong Hong, Qianli Zou, Yamei Liu, Shaozhen Wang, Guizhi Shen, Xuehai Yan
Summary: This study constructs supramolecular nanodrugs of therapeutic peptides through covalent assembly, demonstrating potential photothermal therapy effects and synergistic therapeutic effects on cancer cells.
Article
Chemistry, Multidisciplinary
Rui Geng, Rui Chang, Qianli Zou, Guizhi Shen, Tifeng Jiao, Xuehai Yan
Summary: This study reports the construction of nanoassemblies through coassembly of an amphiphilic amino acid and hemin, which allows tailored peroxidase-mimicking activities. The optimized nanoassemblies exhibit remarkable catalytic efficiency and robustness in multiple catalytic cycles, and can be effectively integrated into a sensing system for catalytic detection of glucose.
Article
Chemistry, Physical
Meng-Ning Chen, Shuping Zhuo, Ling-Bao Xing, Qianli Zou
Summary: The study synthesized nanozymes with well-defined nanostructures through coassembly of albumin and photosensitizer, showing efficient catalytic activity in photocontrolled reversible addition-fragmentation chain transfer (RAFT) polymerization. These nanozymes exhibited good reusability in multiple rounds of polymerizations and precise controllability of activation and deactivation of reactions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Multidisciplinary
Rui Chang, Qianli Zou, Luyang Zhao, Yamei Liu, Ruirui Xing, Xuehai Yan
Summary: Photothermal nanomedicine based on the self-assembly of biological components offers a promising approach for precision cancer therapy. This study demonstrates that amino acid encoding can be used to design and construct supramolecular photothermal nanodrugs with controlled therapeutic activities. By optimizing the amount and type of amino acids, the resulting nanodrugs exhibit robust structural integrity, high photothermal conversion efficiency, efficient cellular internalization, and enhanced tumor accumulation, leading to more effective tumor ablation.
ADVANCED MATERIALS
(2022)
Review
Nanoscience & Nanotechnology
Huan Ren, Lifang Wu, Lina Tan, Yanni Bao, Yuchen Ma, Yong Jin, Qianli Zou, Yong Jin, Qianli Zou
Summary: Amino acids, as the building blocks of proteins and peptides, have the ability to self-assemble with advantages such as low synthesis cost, simple modeling, biocompatibility, and biodegradability. Despite the challenges in using amino acids to design materials, they have the potential to meet various scientific needs.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2021)
Review
Chemistry, Physical
Qianli Zou, Jianwei Bao, Xuehai Yan
Summary: Endogenic pigments derived from hemoglobin have shown great potential in clinical applications due to their unique photophysical and photochemical properties. Recent studies have explored the use of endogenic pigments with near-infrared (NIR) absorbing properties for constructing functional nanomaterials. This article provides an overview of NIR-absorbing endogenic pigments, focusing on bile pigments and melanins, as emerging building blocks for supramolecular construction of diagnostic and therapeutic nanomaterials. The synthesis pathways, structural characteristics, self-assembling approaches, and noncovalent interactions of these NIR-absorbing endogenic pigments are described. The resulting nanomaterials, with inherent photothermal properties, show promise in photoacoustic imaging and photothermal therapy. The integration of additional diagnostic and therapeutic agents into the nanomaterials through chemical conjugation or physical encapsulation is also discussed. The degradation behaviors of the nanomaterials in biological environments are summarized, and future perspectives for designing and translating NIR-absorbing nanomaterials are presented.
Article
Medicine, Research & Experimental
Jianwei Bao, Minxing Hu, Yuanmei Zhang, Qianqian Zhang, Feiyan Zhu, Qianli Zou, Jihui Tang
Summary: The study demonstrates that incorporating antiphagocytic peptides derived from beta M-2 into micelles can enhance their inhibition of macrophage phagocytosis and improve their accumulation in tumors, thereby enabling more effective antitumor therapy.
BIOMEDICINE & PHARMACOTHERAPY
(2022)
Article
Meteorology & Atmospheric Sciences
Qian Zou, Quanjia Zhong, Jiangyu Mao, Ruiqiang Ding, Deyu Lu, Jianping Li, Xuan Li
Summary: Based on a simple coupled Lorenz model, this study investigates how to assess an appropriate initial perturbation scheme for ensemble forecasting in a multiscale system. Four initial perturbation approaches are used, and the results show that the ensemble averages perform better than the control forecast after short lead times in a fast subsystem and after a relatively long period of time in a slow subsystem. Adding perturbations to fast variables or slow variables can contribute to an improvement in the forecasting skill for these variables. The nonlinear local Lyapunov vectors (NLLVs) show higher forecasting skill compared to bred vectors (BVs) or random perturbations (RPs).
ADVANCES IN ATMOSPHERIC SCIENCES
(2023)
Review
Biochemistry & Molecular Biology
Bowen Li, Yan Huang, Qianli Zou
Summary: Liver fibrosis is a process of excessive accumulation of extracellular matrix caused by liver injury. Development of safe and effective antifibrotic drugs is important, but no effective therapeutic drugs have been approved for treating liver fibrosis. Peptides, with their advantages of biological origination, synthetic availability, and good biocompatibility, have been investigated as key components for constructing antifibrotic nanomaterials. This review focuses on peptide-based nanoarchitectonics for treating liver fibrosis, including liver-targeting peptides, delivery of antifibrotic peptides, and self-assembled peptide nanomaterials.
Article
Chemistry, Multidisciplinary
Bowen Li, Yan Huang, Jianwei Bao, Zixuan Xu, Xuehai Yan, Qianli Zou
Summary: We report the use of supramolecular nanoarchitectonics to fabricate nanodrugs from therapeutic peptides for treating liver fibrosis. Self-assembling antagonist peptides are designed and manipulated into uniform peptide nanoparticles with well-defined nanostructures and uniform sizes. The peptide nanoparticles show enhanced accumulation in liver sites and limited distribution in other tissues. In vivo results demonstrate greatly enhanced anti-fibrotic activity compared to the pristine antagonist along with good biocompatibility. These findings highlight the potential of self-assembly as a promising nanoarchitectonics approach to enhance the anti-fibrotic activity of therapeutic peptides for treating liver fibrosis.
Proceedings Paper
Computer Science, Information Systems
Qian Zou, Ning Zhang, Feng Guo, Qingshan Kong, Zhiqiang Lv
Summary: Ternary content-addressable memory (TCAM) plays a crucial role in network applications, functioning as a high-speed search engine for packet classification. This paper presents a multi-region SRAM-based TCAM structure that reduces the consumption of block RAMs on FPGA effectively by utilizing data pre-processing and mapping mechanisms.
SCIENCE OF CYBER SECURITY, SCISEC 2022
(2022)
Proceedings Paper
Computer Science, Artificial Intelligence
Feng Guo, Ning Zhang, Qian Zou, Qingshan Kong, Zhiqiang Lv, Weiqing Huang
Summary: Packet classification is crucial in network security systems, but traditional algorithms waste storage resources when implemented on FPGAs. This study proposes an MEBV scheme that reduces memory consumption through field splitting and recombination, as well as encoding algorithms for length compression of rules.
WIRELESS ALGORITHMS, SYSTEMS, AND APPLICATIONS, PT III
(2022)
Article
Physics, Multidisciplinary
Kang Jun-Feng, Feng Song-Jiang, Zou Qian, Li Yan-Jie, Ding Rui-Qiang, Zhong Quan-Jia
Summary: This study explores the feasibility and effectiveness of using a machine learning algorithm to improve ensemble forecasts based on nonlinear local Lyapunov vectors (NLLVs) in the Lorenz96 model. The results show that the machine learning model (Ens-ML) based on the ridge regression algorithm and the NLLV ensemble forecasting can effectively improve overall forecasting skill. Ens-ML outperforms ensemble-averaged forecasting (EnsAve), control forecasts (Ctrl), and the machine learning model based on Ctrl results (Ctrl-ML). The study also finds that the improvement in forecasting skill depends on the number of ensemble members used in the Ens-ML model, with an increase in ensemble members leading to better skill and reduced overfitting.
ACTA PHYSICA SINICA
(2022)
Review
Nanoscience & Nanotechnology
Rui Chang, Emmanouil Nikoloudakis, Qianli Zou, Anna Mitraki, Athanassios G. Coutsolelos, Xuehai Yan
ACS APPLIED BIO MATERIALS
(2020)
Article
Chemistry, Physical
Wiem Bouali, Muejgan Yaman, Nurgul Seferogu, Zeynel Seferogu
Summary: Novel chemosensors, including coumarin hydrazide, were synthesized and demonstrated the ability to detect cyanide ions through absorption and fluorescence turn-off response. The reaction mechanism between the sensors and the ions was determined through experimental and theoretical studies. The sensors exhibited high detection ability and effectiveness.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Parinaz Abdollahian, Hassan Heidari, Soheila Hassanzadeh, Mohammad Hasanzadeh
Summary: This study successfully synthesized various types of thiolated-graphene quantum dots (GQDs) and utilized them in a one-droplet microfluidic paper-based analytical device for the simultaneous multi-sensing of heavy metal ions. The GQDs were functionalized and stabilized on the surface of hydrophobic fiber-glass, enabling colorimetric chemosensing of ions including iron, copper, cobalt, mercury, chrome, manganese, and nickel. The results were confirmed using fluorescence spectrometry, and the platform showed potential for facile metal ion detection in human urine models and environmental fluids.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
S. L. Barrett, C. Meyer, E. Cwiklik, V Fieglein, M. Burns, J. Guerrero, W. J. Brittain
Summary: Laboratory illumination is strong enough to create a photostationary state (PSS) of amphiphilic azo-benzene compounds in water. The [cis]PSS/[trans]PSS ratios were observed to be 0.33-1.2 in D2O and 0.37-3.8 in dimethyl sulfoxide-d6. ortho-Fluoroazobenzene amphiphiles show higher cis-isomer concentration at equilibrium compared to non-fluorinated compounds due to differences in optical absorption profiles. The kinetics of isomerization were measured using UV-Vis spectroscopy and the ratio of trans-to-cis rates does not directly correlate with the observed PSS. The half-life for PSS formation is 40 minutes for fluorinated compounds and 80 minutes for non-fluorinated compounds.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Jalil Khodayari, Karim Zare, Omid Moradi, Mohammadreza Kalaee, Niyaz Mohammad Mahmoodi
Summary: In this study, an eco-friendly biocomposite (CMC/MIL/CuO) was synthesized and characterized, and its ability to decolorize Acid Blue 92 dye was investigated. The results showed that CMC/MIL/CuO can be used as a suitable photocatalyst for dye decolorization.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Bo Ma, Qian Xu, Huajun Yao, Yalin Chen, Yiyang Wang, Yunfei Yang, Hongfang Shen, Youjun Lu
Summary: This study designed an integrated structure of Cu2O@Au/Cu2O heterostructure particles, which achieved significantly enhanced photocatalytic performance by simultaneously considering the integrated structural characteristics and localized surface plasmon resonance (LSPR) effect. Experimental characterization and theoretical simulation confirmed the three-in-one synergy of the integrated heterostructure, including the LSPR effect of Au nanoparticles, the light scattering based on core-shell heterostructure, and the effective charge separation based on inter-embedded heterostructure. The concept of integrated heterostructure cooperated with LSPR effect provides a new strategy for designing future catalysts.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Robert G. H. Marks, Sarah P. Rockel, Klaus Kerpen, Holger Somnitz, Philipp R. Martin, Maik A. Jochmann, Torsten C. Schmidt
Summary: This study investigated the pH-dependent photolysis of phosphonates in aqueous solutions and analyzed the transformation products. The results showed that the photolysis rate of phosphonates was influenced by pH and light conditions. Furthermore, the carbon kinetic isotope effects varied for different types of phosphonates.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
T. M. Naren Vidaarth, S. Surendhiran, K. S. G. Jagan, S. Savitha, K. S. Balu, A. Karthik, B. Kalpana
Summary: In this study, magnesium oxide nanoparticles were synthesized using plant seed extracts, which exhibited excellent performance in removing dyes from textile water bodies. These nanoparticles also showed strong antibacterial and antioxidant properties.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Mikhail Yu. Ovchinnikov, Vyacheslav A. Antipin, Sergey L. Khursan
Summary: In this study, the recombination of separated ion-radical states (SIRS) in PAPh films was analyzed, and it was found that the contribution of X-SIRS recombination to total luminescence varies with different environments. It was also shown that the recombination of labile SIRS is independent of the nature of the atmosphere. The study theoretically substantiated that SIRS recombination can occur via the transfer of both positive and negative charges, and the efficiency of thermal activation of recombination processes depends on the ratio of radiant and conductive channels of energy transfer.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Sumaira Naeem, Tayyaba Mubashir, Mudassir Hussain Tahir, Jawayria Najeeb, Ahmed Z. Dewidar, Hosam O. El-ansary, Silas Lagat, Anthony Pembere
Summary: This study presents an alternative methodology using machine learning for the selection of novel organic molecules to develop high-performance organic solar cell devices.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
D. Thirumoolan, S. Ragupathy, S. Renukadevi, P. Rajkumar, Rajakumar S. Rai, R. M. Saravana Kumar, Imran Hasan, Mani Durai, Young-Ho Ahn
Summary: In this study, the photodegradation of brilliant green dye was studied in relation to the comparative photocatalytic activity of pure ZnO and Ni-doped ZnO/CSAC. The Ni-doped ZnO/CSAC showed a higher photocatalytic degradation rate under visible light irradiation, suggesting its potential as an effective wastewater treatment material.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Ajmal Khan, Zhidong Chang, Wenjun Li, Xiaohui Ma, Mei Dong, Liang Geng, Ghulam Yasin, Shuaib Khan, Hira Anwar
Summary: Due to its functional structure and tunable shape, 2D zeolitic imidazole framework (ZIFs) have gained significant interest in various fields. In this study, thin ZIF-8 sheets were prepared using a mixed solvent and then delaminated into single layers through physical sonication. These hexagonal sheets exhibited high stability and controlled morphology, and showed excellent performance in dye degradation compared to 3D ZIF-8 crystals.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Vitaly A. Podshibyakin, Evgenii N. Shepelenko, Leonid D. Popov, Tatyana M. Valova, Anton O. Ayt, Lyudmila G. Kuzmina, Anton V. Lisovin, Oleg N. Burov, Mikhail E. Kletskii, Alexander D. Dubonosov, Vladimir A. Bren
Summary: Bifunctional hybrids containing photochromic indolyl(thienyl) diarylethenes and an ionochromic rhodamine moiety connected by a dimethylene spacer were synthesized. These hybrids exhibit absorption at 450-455 nm and fluorescence at 560 nm in toluene. UV light triggers ring-closed non-fluorescent diarylethene formation, which can be reversed under visible light or in the dark. In the presence of H+ cation, a naked eye effect is observed with the opening of the rhodamine-spirolactam ring and a pink-crimson coloration at 561 nm accompanied by intense long-wavelength emission at 586 nm. This process is reversible by exposure to triethylamine, as confirmed by NMR experiments. The light-induced isomerizations and proton-induced transformations were explained using computational methods. Reversible switching of fluorescent properties can be achieved by light irradiation and proton.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Majid Sharifi-Rad, Hazem S. Elshafie, Pawel Pohl
Summary: The study investigated the synthesis of silver nanoparticles using Lallemantia royleana leaf extract, characterized their physico-chemical properties, and evaluated their biopharmaceutical and catalytic applications. The synthesized nanoparticles showed good stability and exhibited higher antioxidant, antimicrobial, anti-inflammatory, anti-arthritic, and cytotoxic activities compared to the leaf extract. These results provide a promising green synthesis route for silver nanoparticles with potential biomedical and catalytic applications.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Meera Moydeen Abdul Hameed, Badr M. Thamer
Summary: Security encoding using photochromism is an effective method for creating authentication substrates. A unique photochromic ink has been developed that emits light continuously under UV rays and darkness. The ink is produced by dispersing lanthanidedoped aluminate nanoparticles in a polymer binder. The resulting composite ink can be used to create transparent films on paper, and the stamped patterns become visible under UV rays, changing from colorless to green.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Monika Lamoria, Rita Kakkar, Marilyn Daisy Milton
Summary: Four novel water-soluble benzimidazolium and bis-benzimidazolium salts with a fluorophore-spacer-receptor design were synthesized and demonstrated to selectively detect Fe3+ ions with large Stokes shifts. The binding mechanism and detection performance were investigated through theoretical and experimental studies.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
