Article
Nanoscience & Nanotechnology
Yanbing Lv, Yucheng Yuan, Ning Hu, Na Jin, Dangdang Xu, Ruili Wu, Huaibin Shen, Ou Chen, Lin Song Li
Summary: This study presents a synthesis method for ultra-thick shell quantum dots and their application in C-reactive protein detection, achieving nearly a 3-fold enhancement in detection sensitivity and a 2-fold increase in shelf life. The performance improvements in protein detection are attributed to the use of core/shell quantum dots with high particle stability, high PL QYs, and a large surface area conducive to surface antibody coupling.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
F. A. Sewid, I. D. Skurlov, D. A. Kurshanov, A. O. Orlova
Summary: The photophysical properties of hybrid structures based on CdSe/ZnS quantum dots (QDs) and tetraphenylporphyrin (TPP) molecules have been studied, showing a higher singlet oxygen (SO) generation rate compared to free TPP molecules due to efficient intracomplex Forster Resonance Energy Transfer (FRET) and monomeric TPP preservation. All energy transferred from QDs to TPP is fully utilized for singlet oxygen generation, as there are no new nonradiative channels in the structures. This result is expected to renew interest in QD-based structures with photosensitizers for theranostics applications.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Jie Zhang, Zihuayuan Yang, Yan-Hong Li, Samran Durrani, Ai-Ping Pang, Yichen Gao, Fu-Gen Wu, Fengming Lin
Summary: This study presented super-stable carboxymethyl chitosanpolyethyleneimine-protoporphyrin IX nanoparticles (CMCS-PEI-PpIX NPs) for effective photodynamic inactivation of bacteria and fungi with excellent biocompatibility. The NPs exhibited exceptional photoinactivation toward a broad range of microbes with record low minimal bactericidal concentrations, showing high stability and negligible cytotoxicity. The development of CMCS-PEI-PpIX NPs provides a promising route for improving microbicidal PDT efficacy in clinic treatment of microbial infections.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Oncology
Harun Basoglu, Ismail Degirmencioglu, Figen Celep Eyupoglu
Summary: The synthesis of Porfipeg allows Protoporphyrin IX (PpIX) to be water-soluble, with no cytotoxicity in cells and significant photodynamic effects under light irradiation. In vivo experiments show that intravenous injection of Porfipeg is more efficient than intraperitoneal injection within 30 minutes, and it is excreted by the kidneys. Overall, Porfipeg shows great potential for both fluorescence-guided surgeries and photodynamic therapy for cancer treatment.
PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY
(2021)
Article
Chemistry, Multidisciplinary
Zhiqiang Zhou, Jianfang Cen, Huixiao Wang, Yu Sun, Liyun Yang
Summary: The investigation on the functionalization process of quantum dots (QDs) using transferrin is very essential due to the high importance of transferrin in targeting tumor. The study found that both CdSe and CdSe@ZnS QDs triggered the fluorescence quenching of transferrin by the static quenching mechanism. The binding constant for CdSe@ZnS QDs was higher than CdSe QDs, indicating a stronger binding between CdSe@ZnS QDs and transferrin. The interaction between QDs and transferrin resulted in conformational changes of the latter and the release of iron ions from transferrin.
Article
Oncology
Dorothee C. Spille, Eva C. Bunk, Christian Thomas, Zeynep Oezdemir, Andrea Wagner, Burak H. Akkurt, Manoj Mannil, Werner Paulus, Oliver M. Grauer, Walter Stummer, Volker Senner, Benjamin Brokinkel
Summary: This study investigated the use of 5-ALA-mediated fluorescence-guided resection (FGR) in meningiomas and found that it has high sensitivity and specificity for the identification of tumor tissue. It also showed a correlation between fluorescence and the expression of key enzymes and transporters. However, there are limitations in visualizing the dura tail or CNS invasion.
Article
Chemistry, Physical
Nattakarn Phromsiri, Sakiru L. Abiodun, Chonnavee Manipuntee, Pannee Leeladee, Andrew B. Greytak, Numpon Insin
Summary: In this study, a new ratiometric mixed-QDs probe for the quantification of Cu2+ in an aqueous solution was reported. This probe combines the concepts of ratiometric and fluorescence resonance energy transfer. The detection method is simple, fast, sensitive, selective, and accurate, with a low detection limit for Cu2+ and high selectivity towards other biological and environmental relevant ions. Additionally, the mixed-QDs probe shows potential for naked-eye detection of Cu2+ in water samples and biological specimens.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Oncology
Darlan Barbosa da Silva, Carolina Loureiro da Silva, Nathalia Nossi Davanzo, Rodrigo da Silva Souza, Rodrigo Jose Correa, Antonio Claudio Tedesco, Maria Bernadete Riemma Pierre
Summary: The study evaluated the use of nanoparticles as drug delivery systems for topical PDT of melanoma and found that nanoparticles did not affect the photophysical properties of PpIX, but could enhance phototoxicity under certain conditions. This suggests that nanoparticles may serve as a potential delivery system for melanoma skin cancer.
PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY
(2021)
Article
Nanoscience & Nanotechnology
Hao Hao, Hui-Ling Hu, Yi Liu, Feng-Lei Jiang
Summary: In this work, CdSe/ZnS core/shell quantum dots were synthesized and the dilution process of QDs was investigated. The addition of tertiary phosphine and alkylthiol was found to recover the photoluminescence intensity of diluted QDs and make them stable. Isothermal titration calorimetry revealed the exothermic and spontaneous interactions between TOP/OT and QDs.
ACS APPLIED NANO MATERIALS
(2023)
Review
Chemistry, Medicinal
Yo Shinoda, Daitetsu Kato, Ryosuke Ando, Hikaru Endo, Tsutomu Takahashi, Yayoi Tsuneoka, Yasuyuki Fujiwara
Summary: The study reviewed and analyzed the effectiveness of 5-ALA PDT in vitro experiments for different cancer cell types, finding that the sensitivity to 5-ALA PDT varies across cancer classifications, with stomach cancer showing significantly higher sensitivity compared to other cancers. The analysis suggests the need for a standardized in vitro experimental protocol for 5-ALA PDT in future research.
Article
Chemistry, Medicinal
Bauyrzhan Myrzakhmetov, Philippe Arnoux, Serge Mordon, Samir Acherar, Irina Tsoy, Celine Frochot
Summary: This study investigated the influence of solvent polarity, viscosity, concentration, temperature, and pH medium on the photophysical properties of different photosensitizers, providing important insights for research in photodynamic therapy.
Article
Chemistry, Applied
Jinri Chen, Nan Sun, Haohan Chen, Yuting Zhang, Xiaoli Wang, Nandi Zhou
Summary: A high-sensitive fluorescent biosensor for Neu5Ac has been developed based on FRET between CdSe/ZnS quantum dots (QDs) and BHQ(2), as well as exonuclease III (Exo III)-assisted recycling amplification strategy. The biosensor achieved an ultralow detection limit of 24 fM and good linear response ranges within 0.2-12.5 pM and 12.5-1000 pM, showing great potential for detection of sialic acids modified glycans/lipids in medical diagnosis and food testing.
Article
Chemistry, Multidisciplinary
Ha Trang Nguyen, Thanh Thao Tran, Vishwa Bhatt, Manjeet Kumar, Jinwon Song, Ju-Hyung Yun
Summary: In recent years, several key technologies in the solar energy industry have been developed to achieve grid parity, including efficient materials, simple processes, and designs. Among them, the use of metal nanoparticles (MNPs) in combination with luminescent materials has attracted attention. Researchers have fabricated and examined Si-based Schottky junction solar cells to enhance their performance. By incorporating CdSe/ZnS quantum dots (QDs) with different sizes of gold nanoparticles (Au NPs) on a Si light-absorbing layer, the overall efficiency of Si solar cells in the visible spectrum has been improved due to the light scattering effect from plasmonic resonance. However, the back-scattering and high reflectance of Au NPs result in efficiency loss in the UV region. To mitigate this, a QDs layer is used as a luminescent downshifter to absorb high-energy photons and re-emit lower energy photons in the 528 nm wavelength. This downshifting layer enhances the overall efficiency of Si solar cells, compensating for the poor intrinsic spectral response in the UV region. The optical and electrical properties of Au NPs, CdSe QDs, and the Au/QD layers in combination with solar cells have been extensively studied, with a focus on the influence of Au NPs size on solar cell performance.
APPLIED SCIENCES-BASEL
(2022)
Article
Nanoscience & Nanotechnology
Giacomo Biagiotti, Andrea Angeli, Arianna Giacomini, Gianluca Toniolo, Luca Landini, Gianluca Salerno, Lorenzo Di Cesare Mannelli, Carla Ghelardini, Tommaso Mello, Silvia Mussi, Cosetta Ravelli, Marcello Marelli, Stefano Cicchi, Enzo Menna, Roberto Ronca, Claudiu T. Supuran, Barbara Richichi
Summary: A quantum dot-based fluorescent glyconanoprobe with a specific ligand coating was designed and synthesized in this study, targeting membrane-anchored overexpressed hCA IX on bladder cancer cells, with monosaccharide residues ensuring dispersibility in the biological medium and quantum dots imparting optical/fluorescence properties.
ACS APPLIED NANO MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Jie He, Zhi-zheng Wang, Chen-hong Li, Hai-long Xu, Hong-zhi Pan, Yu-xia Zhao
Summary: This study evaluated the toxicity of CdSe/ZnS quantum dots (QDs) to the aquatic organism T. thermophila and investigated their effects on cellular metabolism. The results showed that QDs inhibited cell proliferation, induced oxidative stress and altered mitochondrial ultrastructure. Metabolomics analysis revealed significant changes in cellular metabolism, especially in ATP-binding cassette transporter and purine metabolism pathways, which are associated with ROS-induced cell membrane damage.
BIOCHIMICA ET BIOPHYSICA ACTA-GENERAL SUBJECTS
(2023)
Correction
Chemistry, Physical
Chen Luo, Yan Shao, Hua Yu, Hong-zhi Ma, Yu-hao Zhang, Long Gu, Bo Yin, Ming-bo Yang
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Stefano Borocci, Armando Camerlingo, Felice Grandinetti, Maria Rutigliano, Nico Sanna
Summary: The complexes of He, Ne, Ar, Kr, and Xe with B3N3H6 were investigated using MP2, CCSD(T), and SAPT ab initio methods. The complexes can be described as mono-, di-, and tri-coordinated to the N atoms, with stability following the order N-mono < N-di < N-tri. The interactions are dominated by dispersion and the binding energies are within the range of 1 or 2 kcal mol(-1). The results were compared with a recent DFT study on larger BN sheets complexes [Phys. Chem. Chem. Phys. 24 (2022) 2554-2566.].
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
V. Nagarajan, R. Bhuvaneswari, R. Chandiramouli
Summary: In this study, stable phosphoborane was used as a sensor to detect isobutane and n-propane in Liquefied Petroleum Gas (LPG). Phosphoborane demonstrated structural stability and semiconducting nature, and exhibited promising adsorption properties for the LPG molecules.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Xiaoxi Xu, Zijiang Yang, Bayaer Buren, Maodu Chen
Summary: In this study, the time-dependent wave packet method was used to investigate the reaction channels and mechanisms of Ca+ + HD. The results show that the CaH+ + D reaction channel plays a primary role, which is consistent with experimental results. Complex forming and direct-abstraction reaction mechanisms exist in this reaction process.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Keshab Pandey, Hae Kyung Jeong
Summary: A free-standing silicon-carbon nanofiber composite film was synthesized and investigated for supercapacitor applications. It exhibited high specific capacitance, energy density, and power density. After 5000 cycles, the film showed excellent specific capacitance retention and Coulombic efficiency.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Xinyu Zhang, Haosong Li, Xiaoyu Cao, Jing Gao, Yong Wei, Jianzhuo Zhu
Summary: The evaporation behavior of nanosized water aggregations on two-dimensional electroneutral solid surfaces with different surface polar unit densities was investigated. The results showed that the evaporation rate changes non-monotonically with the surface polar unit density, and the minimum evaporation rate is obtained when the surface has a modest surface polar unit ratio of 66.7%.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Yanyan Xu, Rui Dai, Xiaojie Wang, Zhijun Qiao, Haowei Wen, Dianbo Ruan, Yuzuo Wang
Summary: This article presents an innovative solvothermal sodium insertion method for synthesizing Triphylite-NaFePO4, which demonstrates optimal electrochemical performance in sodium-ion batteries.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Meiyi Jiang, Kun Yang, Yancheng Liu, Li Yao
Summary: The geometric structure and electronic properties of transition metal M (M = Cu, Fe, Mn)-TiO2 (101) surface adsorbed by NO2 and N2O were calculated by density functional theory (DFT) and DFT + U theory. The results showed that the adsorption of NO2 and N2O on Mn and Fe atoms is more stable, and a large number of active electrons are formed around these atoms, facilitating the catalytic reactions.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Sergey A. Vyrko, Yulia G. Polynskaya, Nikita A. Matsokin, Andrey M. Popov, Andrey A. Knizhnik, Nikolai A. Poklonski, Yurii E. Lozovik
Summary: In this study, carbon nanobracelets, which are cyclic molecules composed of alternating polycyclic regions and double carbon chains, were investigated using spin-polarized density functional theory. The results show that carbon nanobracelets with odd number of monomers exhibit distinct electronic energy levels, band gaps, and carbon chain deformation compared to those with even number of monomers.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Chanchan Wang, Quan Yang, Yanzhi Ding, Xiaoyong Lu, Dong Tian
Summary: It has been found that the introduction of buffer layers improves the electrical performance of solid oxide fuel cells (SSOFCs). In this study, varying ratios of Gd-doped CeO2 were used as buffer layers in YSZ-based SSOFCs. The results demonstrate that the performance of SSOFCs is enhanced when a buffer layer is added, with the highest performance achieved using Ce0.8Gd0.2O2-delta (GDC20) as the buffer layer. This suggests that the use of GDC series buffer layers is an attractive strategy to optimize performance loss due to electrolyte-electrode interactions.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Wang Li, Yi-Fan Zhang, Jia-Bin Huang, Chang-Yang Wang, Feng Zhang, Jiu-Zhong Yang, Long Zhao
Summary: The gas-phase reaction of propargyl with vinylacetylene was investigated using synchrotron photoionization and molecular-beam mass spectrometry methodologies. The formation mechanisms of the resulting cyclic structures were examined using quantum computations. Two previously unidentified isomers were detected and identified for the first time.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Avijit Pramanik, Sanchita Kundu, Olorunsola Praise Kolawole, Kaelin Gates, Paresh Chandra Ray
Summary: This study investigates the influence of aspect ratio and quantum confinement on the single-photon and two-photon absorption cross-section of perovskite CsPbI3 nanorods. Experimental data shows that CsPbI3 nanorods have an extremely high two-photon absorption cross-section, significantly surpassing organic chromophores and other CsPbBr3 nanocrystals. Moreover, adjusting the aspect ratio can significantly enhance the absorption ability. Additionally, the study also reveals a moderate quantum confinement effect on the single-photon and two-photon absorption cross-section of the nanorods.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Hyon-Tae Pak, Jin-A Choe, Kyong-Sik Ju, Yong -Son Rim
Summary: Drug-loaded cellulose diacetate (CDA) membranes were prepared using different compositions of mixed solvent. The microstructure and performance of the membranes were investigated, and a method to predict drug release properties was proposed. The results showed that the composition of the mixed solvent significantly affected the overall performance of CDA membranes, and the release rates of drugs were related to Δdelta and the intrinsic viscosity of CDA.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Gabriella E. Ravin, E. Curotto
Summary: We have developed a systematic approach to optimize the training set sizes for neural networks in fitting ab initio potential energy surfaces. Using this approach, we have constructed several spectroscopic quality potential energy surfaces for [Li(H2)n]+, n = 1 - 9. The ground state properties have been computed for all the systems and selected states.
CHEMICAL PHYSICS LETTERS
(2024)
Article
Chemistry, Physical
Guohua Xu, Lei Xu, Feng Zhang, Chunling Yu, Yu Song
Summary: NiS1.03@Ni7S6/carbon composite was successfully prepared using corn stalk as a carbon source via a simple adsorption-sulphurization process. The composite exhibited a specific capacitance of 1554.6 F/g at 1 A/g as a supercapacitor electrode, with a capacitance retention rate of 80.4% after 5000 cycles. Furthermore, the NiS1.03@Ni7S6/carbon//AC asymmetric supercapacitor showed a high energy density of 41.2 Wh kg-1 at a power density of 750 W kg-1, and excellent cycling stability with 86.8% capacitance retention after 10,000 cycles.
CHEMICAL PHYSICS LETTERS
(2024)