Article
Chemistry, Multidisciplinary
Rongli Wei, Yongli Wang, Na Wang, Yunhui Hao, Xin Huang, Ting Wang, Hongxun Hao
Summary: A novel 2:1 cocrystal of APO3C and TFTA was designed and synthesized in this study, which achieved photoinduced rotation with the three indispensable factors of the linear synthon induced by hydrogen bonding, unsymmetrical isomerization of APO3C molecules, and their diagonal arrangement.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Physical
Fuqiang Lan, Junle Zhang, Yuying Li, Yaxuan Shi, Yuancheng Zhang, Ge Shi, Xiaomeng Zhang, Zhe Cui, Peng Fu, Minying Liu, Xiaoguang Qiao, Yanjie He, Wenjie Zhang, Xinchang Pang
Summary: Highly ordered TiO2 nanotube arrays (TNTAs) and their heterostructure nanocomposites were used as photocatalysts for efficient broadband photoinduced controlled radical polymerization (photoCRP). The combination of electron transfer acceleration from TNTAs' structure and the localized surface plasmon resonance (LSPR) effect with the formation of Schottky barrier via Au nanoparticle modification enabled efficient UV-visible light responsive photoCRP. The resulting polymers exhibited high conversion, living chain-ends, tightly regulated molecular weights, and excellent temporal control properties.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
O. Sakhno, L. M. Goldenberg, M. Wegener, C. Dreyer, A. Berdin, J. Stumpe
Summary: This study demonstrated, for the first time, the controlled fabrication of surface relief gratings in an azobenzene-containing polyelectrolyte material using an UV-laser and Lloyd's interferometer. These gratings can have small period down to 180 nm. The replication of the gratings using soft lithography was also demonstrated.
Article
Materials Science, Multidisciplinary
Sarah Loebner, Bharti Yadav, Nino Lomadze, Nina Tverdokhleb, Hendrik Donner, Marina Saphiannikova, Svetlana Santer
Summary: This study reveals the relationship between photoinduced deformation of azobenzene containing polymers and the direction of optomechanical stresses generated during irradiation with interference patterns. Experimentally observed shapes are accurately reproduced with modeling using visco-plastic properties in finite element software. The orientation approach can predict local variations of light-induced stress in different interference patterns, providing a self-sufficient and convincing mechanism for describing photoinduced deformation in azopolymer films.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Chemistry, Physical
Anna Kozanecka-Szmigiel, Aleksandra Hernik, Katarzyna Rutkowska, Jolanta Konieczkowska, Ewa Schab-Balcerzak, Dariusz Szmigiel
Summary: This research reports on the holographic inscription of a surface relief grating with a maximum depth of 1.7 µm in a custom synthesized glassy azo polymer. The deformed polymer structure has a unique dual effect on incoming light beams of different diameters, enabling continuous tuning of diffraction efficiencies and reshaping the intensity profiles.
Article
Materials Science, Multidisciplinary
Fabio Borbone, Stefano Luigi Oscurato, Salvatore Del Sorbo, Filippo Pota, Marcella Salvatore, Francesco Reda, Pasqualino Maddalena, Roberto Centore, Antonio Ambrosio
Summary: In this study, the role of hydrogen bonding in the design of supramolecular azopolymers was investigated. Utilizing the 2-aminopyrimidine/carboxylic acid supramolecular synthon for molecular recognition, complexes with multiple non-ionic interactions between azobenzene units and polymer chains were successfully prepared. The surface photopatterning of thin films driven by mass migration in azopolymers was significantly enhanced with increasing azobenzene content, showing the advantage of synthon-based azobenzenes over single H-bonded systems. The easy extraction of azobenzene units from photopatterned films without any chemical pre-treatment was demonstrated, maintaining the periodicity of the surface relief gratings due to the orthogonal solubility of components in the supramolecular system.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Physical
Li-Han Rong, Xiang Cheng, Jin Ge, Olivia K. Krebs, Jeffrey R. Capadona, Eugene B. Caldona, Rigoberto C. Advincula
Summary: The hypothesis of this study is that hyperbranched polymers have higher functionality and are easier to prepare compared to dendrimers and dendric polymers. Combining electrodeposition and surface-initiated photoinduced electron transfer-reversible addition-fragmentation chain transfer (SI-PET-RAFT) polymerization is proposed as a novel strategy for preparing hyperbranched polymer films on conductive surfaces without degassing. Experimental results confirmed that these hyperbranched polymer films can potentially be useful for fabricating protective polymer coatings on various conductive surfaces.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Polymer Science
Nadiyah Rashed Al Atmah, Willian R. Caliman, Agnieszka Pawlicka, Ribal Georges Sabat, Jean-Michel Nunzi
Summary: In this study, homogeneous thin films of chitosan-PADA dye were deposited on glass substrates using spin-coating method. ATR-FTIR spectroscopy and UV-VIS spectroscopy were performed to characterize the films, revealing hydrogen bonding and the formation of surface relief grating (SRG). AFM confirmed the existence of SRG and measured the grating depth.
Article
Multidisciplinary Sciences
Jinseong Ahn, Junyong Park
Summary: This research systematically predicts the influence of relief height of a phase grating on the Talbot interference pattern under two-photon interference lithography through optical simulations. The study reveals the design error of the relief height of the phase grating inferred by the scalar approximation and presents the optimal condition that satisfies the pi-phase shift inferred by the full-vectorial numerical solution.
ADVANCED THEORY AND SIMULATIONS
(2022)
Article
Engineering, Electrical & Electronic
Xiyong Huang, Shahna Muhammad Haneef, Mike Davies, Dominic A. Moseley, Bart M. Ludbrook, Erica E. Salazar, Andrew N. Chalmers, Rodney A. Badcock
Summary: Optical fibre Bragg grating (FBG) sensors are used for cryogenic temperature and strain measurements in various applications, such as hotspot detection in high-temperature superconductor magnets. The sensitivity and reflection spectrum of FBG depend on adhesion, elasticity of the bond, and birefringence effect. Two types of FBG sensors, Draw Tower Gratings (DTG & REG;) with Ormocer coating and FemtoSecond Gratings (FSG) with polyimide coating, were investigated in terms of performance and temperature sensitivity. The study found that mounting FBG sensors in V-grooves achieved higher temperature sensitivities due to enhanced thermal strain transfer.
OPTICAL FIBER TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Levente Csoka, Worakan Hosakun, Otto Kolonics, Bunsho Ohtani
Summary: The photoabsorption properties of cellulose fibres under continuous and modulated irradiation were investigated using reversed double-beam photoacoustic spectroscopy. The results showed visible light-induced electron trap filling and reductive changes on the fiber surface. The study also demonstrated that the electron trap distribution, which is a potential measure of cellulose crystalline defects, can be estimated using the RDB-PAS technique.
SCIENTIFIC REPORTS
(2022)
Article
Optics
Jimin Fang, Bo Wang
Summary: A multilayer metal-coated nano-grating operated at the wavelength of 1550 nm is proposed for achieving a grating-based polarizer with high efficiency and high extinction ratio. The structure works at the incident angle of 45 degrees, offering reflection and transmission extinction ratios of 49.15 dB and 55.49 dB, respectively. The added metal and Ta2O5 dielectric layers enhance the grating's performance, allowing for an extinction ratio of over 20 dB within an angular width of 26.1 degrees for orthogonally polarized components of light.
JOURNAL OF OPTICAL TECHNOLOGY
(2021)
Article
Physics, Applied
Xiangxian Wang, Yaqian Ren, Tianxu Jia, Yingwen Su, Yunping Qi, Xiaolei Wen
Summary: This paper presents a surface plasmon interference lithography technique based on the complementary grating for fabricating subwavelength structures. The optimal parameters of the complementary grating structure were determined using the reflectance spectrum. The optical field distributions of one- and two-dimensional subwavelength structures were obtained and various subwavelength structures can be fabricated using different rotation methods.
MODERN PHYSICS LETTERS B
(2022)
Article
Chemistry, Multidisciplinary
Baeck B. Choi, Bethy Kim, Jason Bice, Curtis Taylor, Peng Jiang
Summary: This study achieved a high figure of merit (FOM) of 112.34 with the Au-covered epoxy grating (Au/Epoxy), showing advantages over the Au/PC grating.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Thermodynamics
Qing Li, Jiahao Zhao, Xuezhen Sun, Bin Liu
Summary: In this paper, the pool boiling heat transfer on pillar-structured surfaces with different wettability patterns and channel-to-pillar width ratios was experimentally investigated. The results showed that the effect of wettability patterns on boiling performance was similar to that on plain surfaces, but the differences between hydrophilic and hydrophobic patterns increased with the decrease of the channel-to-pillar width ratio.
APPLIED THERMAL ENGINEERING
(2022)
Article
Chemistry, Applied
Leping Chen, Yanfen Wang, Tingyu Shi, Tiantian Ma, Yang Li, Huayu Qiu, Shouchun Yin, Meier Gu
Summary: This study successfully overcame the limitations of the heavy atom effect by introducing iodine atoms and innovatively enhancing the structure while weakening stacking behavior, achieving high efficiency and precision in photodynamic therapy and photothermal therapy.
Article
Chemistry, Applied
Bingpeng Guo, Honghan Sa, Peng Zhang, Guiwen Hao, Mengyu Li, Qingqing Jiang, Baoying Li, Wei Shu, Changxiang Shao
Summary: The design of ratiometric fluorescence probes with large Stokes shift is of great significance in detecting and imaging target substances in complex organisms. In this study, a novel fluorophore with a large Stokes shift was easily obtained, and a fluorescence probe based on it demonstrated rapid response, high selectivity, and sensitivity towards peroxynitrite. The probe also showed excellent biocompatibility and remarkable mitochondrial targeting ability, making it suitable for proportional imaging of peroxynitrite in living cells and zebrafish.
Review
Chemistry, Applied
Haidong Huang, Xiaohui Wang, Xinyang Li, Yichen Li, Guojin Liu, Lan Zhou, Jianzhong Shao
Summary: This article introduces the application of responsive photonic crystals in anti-counterfeiting technology, with a focus on the preparation principle, classification, and preparation methods.
Article
Chemistry, Applied
Yunpeng Wang, Tao Zhao, Xiaoye Bi, Chencheng Lv
Summary: In this study, three novel carbene dyes were designed to achieve environmentally friendly dyeing processes. The dyes formed covalent bonds with fibers and exhibited good dyeing performance and high color fastness. These findings highlight the potential of the novel carbene dyes in promoting green production in the textile industry.
Review
Chemistry, Applied
Yizhe Yan, Xiaopei Zhu, Jia-Xin Cao, Yuan He, Shaoqing Li, Jian-Yong Wang
Summary: In this paper, 1,3,5-triazine dyes were successfully synthesized and their photophysical properties were studied. Two probes were selected for further investigation, showing promising applications in various fields.
Article
Chemistry, Applied
Xin Hu, Tongsheng Huang, Lihua Chen, Weifeng Zhu, Fengjie Deng, Xiancai Li, Jianwen Tian, Meiying Liu, Xiaoyong Zhang, Yen Wei
Summary: This study presents the synthesis of fluorescent cyclomatrix polyphosphazene spheres with aggregation-induced emission (AIE) feature and biodegradable potential for controlled drug delivery. The resulting micelles exhibit high water dispersibility, desirable fluorescence performance, and high drug loading capacity. They can effectively release the encapsulated drug in physiological solution and show excellent biological imaging ability and cytotoxicity against cancer cells.
Article
Chemistry, Applied
Yanzhu Liu, Yanghui Lei, Dongyan Li, Guangkui Li, Dongping Li, Yongxiu Li
Summary: In this study, luminescent lanthanide nanoparticles were synthesized as a dual emission turn-off probe for detecting 2,6-pyridinedicarboxylic acid (DPA) in water. The nanoparticles showed good dispersion and water stability, and achieved low detection limits for DPA. They also exhibited high recoveries in various samples.
Article
Chemistry, Applied
Jung Jae Do, Jong Ryeol Kwon, Donghan Kim, Jae Woong Jung
Summary: This study presents a defect passivation approach using coumarin dye as a multi-functional passivating agent of perovskite films to boost power conversion efficiency and operating stability of PSCs. The incorporation of coumarin dye improves the film morphology, enhances carrier extraction/transport, and suppresses trap-assisted recombination in the perovskite films. The optimized device demonstrates impressive reliability and practical applicability, maintaining over 90% of its initial PCE after being exposed to continuous indoor lighting irradiation for 2000 hours.
Article
Chemistry, Applied
Gang Wang, Yu-Chang Wang, Jing Lu, Wen-Fu Yan, Juan Jin, Yuan-Peng Wang, Jia-Jia Zhang, Hui-Jie Zhang, Hao Dong, Xi-Guang Liu
Summary: A new Ni(II) compound with good solid-state fluorescence performance and stability was synthesized, and it showed outstanding detection properties for various substances in aqueous solutions. This compound has the potential to be a multifunctional sensor.
Article
Chemistry, Applied
Luyao Wei, Shenglong Shang, Yu Zheng, Jie Liu, Ping Zhu
Summary: This study developed a facile method to create high saturation and durable structural colors on cotton fabrics. The colors are regulated by adjusting the size of magnetic particles and can be conveniently printed on fabrics using photo masks on transparent films.
Article
Chemistry, Applied
Zhao Jiang, Qing Zhang, Zhaoyu Kong, Ruijie Qiao, Zichuan Liu, Linzhou Song, Senqiang Zhu, Rui Liu, Hongjun Zhu
Summary: Three heteroleptic Ir(III) complexes with different electron-donating aryl groups were synthesized and their optical properties were investigated. It was found that all three complexes exhibited aggregation-induced phosphorescence emission (AIPE) behaviors, and the relationship between the size of organic ligands and AIPE behaviors was characterized. Ir-PhCz showed the best imaging of latent fingerprints due to its green light emission and high quantum yield.
Article
Chemistry, Applied
Zhijun Ruan, Chunxia Fan, Xuanrong Wang, Dong Shao, Xiaodong Yang, Wentao He, Tao Xu, Junqi Lin, Zhengfang Tian
Summary: A novel thioketal-based probe has been designed for rapid and accurate detection of mercury (II) ions, showing different fluorescence characteristics in various states. The probe exhibits excellent selectivity and specificity, making it suitable for Hg2+ detection in water solutions.
Article
Chemistry, Applied
Jianjun Huang, Xuan Zhao, Daniel Escudero, Luc Van Meervelt, Dongbin Zheng, Yuyu Fang, Wim Dehaen
Summary: A series of BOAHY compounds were successfully synthesized and showed versatile applications as a platform for designing novel fluorescent probes, especially in selective recognition.
Article
Chemistry, Applied
Roman V. Larkovich, Victoria E. Shambalova, Savva A. Ponomarev, Alexander S. Aldoshin, Boris N. Tarasevich, Konstantin A. Lyssenko, Valentine G. Nenajdenko
Summary: An efficient synthetic protocol for the preparation of novel 1,7-difluorinated BODIPYs was elaborated. Their photophysical properties were studied and the effect of 2,6-substituents was evaluated using DFT calculations.
Article
Chemistry, Applied
Haneul Kim, Byungjin Koo
Summary: In this study, a lithium ion sensing methodology based on fluorinated naphthalene compounds using 19F NMR and UV-vis spectroscopy is reported. The binding of lithium ions to the compounds is confirmed by changes in chemical shifts and peak broadening. Additionally, the effect of different crown ether ring sizes on the binding ability is observed. This study provides a new method for lithium ion sensing using spectroscopy.