Article
Chemistry, Multidisciplinary
Hongru Zhou, Min Wang, Feng Wang
Summary: This study presents a new oxidative photo-reforming strategy using a CdS@g-C3N4 composite to convert biomass-derived polyols into CO at room temperature. The strategy achieves high yield in an oxygen-rich atmosphere and provides a sustainable pathway for carbon-neutral production of CO.
Article
Engineering, Chemical
Hai -Min Shen, Hong-Liang Ye, Jia-Ye Ni, Ke-Ke Wang, Xin-Yan Zhou, Yuan -Bin She
Summary: Heterogeneous catalysts based on metalloporphyrin were constructed using 3D POFs to achieve oxidative functionalization of a-C-H bonds in alkyl aromatics with O2. The porosity of the 3D POFs was designed as a confined reaction channel to control excessive expansion of free radical quantity, while heterogeneous catalysis was employed to reduce oxidative transformation of partial oxidation products. The application of these catalysts resulted in enhanced conversion and selectivity, especially when using POFs with specific capping. This research provides an instructive reference for efficient functionalization of C-H bonds with O2 and other chemical transformations involving free radicals.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Akinori Honda, Nachi Ueno, Koki Fujiwara, Hirofumi Masuhara, Kazuo Miyamura
Summary: The thermal behavior of alkylated diarylethene molecules (DAE-Cn) was investigated. It was found that DAE-C1 and DAE-C2 exhibited cold crystallization and DAE-Cn showed photoisomerization. Visible light irradiation resulted in the formation of the open-ring isomer, while UV light irradiation transformed it into the closed-ring isomer. Cold crystallization could be inhibited by UV irradiation and triggered by visible light, indicating that heat storage could be photo-controlled.
Article
Chemistry, Multidisciplinary
Huizhen Zhang, Wanfu Zhong, Qiaobin Gong, Pengfei Sun, Xiaozhen Fei, Xuejiao Wu, Sha Xu, Qinghong Zhang, Gang Fu, Shunji Xie, Ye Wang
Summary: We constructed a solar-energy-driven redox cycle using iron ions as catalysts for the combination of CH4 conversion and H2 production. A photo-driven iron-induced reaction system was developed, which showed high efficiency in the selective coupling of CH4, benzene, and cyclohexane under mild conditions. Mechanistic studies revealed that CH4 coupling was induced by hydroxyl radical generated by photo-driven intermolecular charge migration of an Fe3+ complex. The produced Fe2+ was used to reduce the potential for electrolytic H2 production and then turned back into Fe3+, forming an energy-saving and sustainable recyclable system.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Multidisciplinary
Josh A. Davies-Jones, Philip R. Davies
Summary: This article reviews the remarkable advances made in the past decade in using spectroscopic tools to study surface properties. It focuses on the use of photo induced force microscopy (PiFM) as a promising tool, which enables nanometer-resolved mapping of surface properties. PiFM utilizes mechanical detection of dipole-dipole interactions to achieve high resolution imaging of surface properties, including vibrational modes of adsorbates and plasmon resonances. Compared to other related techniques, PiFM has many advantages, especially when combined with other surface characterization methods. The future of PiFM technology is likely to involve higher resolution imaging and wider application in different environments.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Bugga Balakrishna, Susanne Mossin, Soren Kramer
Summary: We reported a photo-induced dehydrogenative N-N coupling of diarylimines, diarylamines, carbazoles, and anilines. This homo-coupling reaction only requires the combination of di-tert-butyl peroxide (DTBP) and light irradition. The protocol is simple, catalyst- and metal-free, and has a good substrate scope. Preliminary mechanistic studies suggest that the reaction proceeds via photo-induced homolytic cleavage of the peroxide followed by hydrogen atom transfer leading to the formation of N-centered radicals.
CHEMICAL COMMUNICATIONS
(2022)
Review
Chemistry, Multidisciplinary
Shaohua Zhang, Shusong Liu, Yiying Sun, Shihao Li, Jiafu Shi, Zhongyi Jiang
Summary: Efficient chemical transformation is essential for modern society's sustainable development. Enzyme-photo-coupled catalytic systems (EPCS) show promise in solar-driven 'molecular editing', but the design of efficient and stable EPCS is challenged by the involvement of multiple components and catalytic processes. Identifying connectivity and compatibility between biocatalytic and photocatalytic ensembles as crucial factors governing EPCS performance, solutions for undesirable connectivity and low compatibility are discussed to propose designing principles for EPCS and provide a future perspective.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Medicinal
Chen Zhang, Jiatong Lv, Xiaoming Qin, Zhilan Peng, Haisheng Lin
Summary: Enzymatic hydrolysates from oysters contain specific peptides that exhibit skin oxidation resistance. Through fractionation and mass spectrometry analysis, 17 peptides with high activity levels were identified, and AIVAEVNEAAK showed the strongest anti-UV-induced skin photo-oxidation activity among them.
Article
Chemistry, Applied
Xing-Wei Gu, Youcan Zhang, Fengqian Zhao, Han-Jun Ai, Xiao-Feng Wu
Summary: The combination of charge-transfer complex and light irradiation provides a promising solution for sustainable chemistry. In this study, a phosphine-catalyzed visible light-induced alkoxycarbonylation reaction was developed, demonstrating high functional group tolerance and excellent chemoselectivity. Additionally, a five-component perfluoroalkylative carbonylation reaction was achieved, allowing the synthesis of β-perfluoroalkyl acyloxy esters from unactivated olefins and perfluoroalkyl iodides.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Organic
Kosho Makino, Kumi Tozawa, Yuki Tanaka, Akiko Inagaki, Hidetsugu Tabata, Tetsuta Oshitari, Hideaki Natsugari, Hideyo Takahashi
Summary: The study revealed that the photoracemization reaction of chiral alkyl aryl sulfoxides is extremely fast and influenced by various substitution patterns. However, chiral sulfoxides with easily oxidizable functional groups are not suitable for this photo-isomerization.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Deepak Panchal, Sukdeb Pal
Summary: This study reports a rapid and facile photo-induced synthesis method for the preparation of tailorable hierarchical Ag-Fe bimetallic nanostructures. The method eliminates the essential need for pre-synthesized precursor metal nanoparticles, toxic templates or surfactants, organic solvents, and sophisticated instrumentation or stringent reaction conditions.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Peiming Cheng, Lixuan Cai, Danni Yan, Lipeng Zhou, Qingfu Sun
Summary: This study reported a Pd4L2-type molecular cage and catalyzed reactions of spiroepoxy naphthalenone in water, achieving selective formation of different products. Confirmation of encapsulating guest molecules within the cage and determination of host-guest complex structures were carried out by NMR and single crystal X-ray diffraction study. Appearance of charge-transfer absorption on the host-guest complex enabled low-power blue LEDs irradiation to promote a photo-induced ring-opening isomerization process.
Article
Chemistry, Multidisciplinary
Chen Li, Jin Wang, Yan Wang, Yi Feng, Jinbo Li, Yan Zhang
Summary: Targeted inhibition of oncogenic microRNAs can be achieved by using a bifunctional chimera, TGP-210-Ppa, which combines a ligand for the oncogenic precursor miR-210 with a photosensitizer pyropheophorbide a (Ppa). This chimera can specifically bind to the oncogenic pre-miRNA and degrade it through photo-degradation under red light irradiation. This unique modification of precursor microRNA provides temporal-spatial resolution for target gene regulation.
CHEMICAL COMMUNICATIONS
(2023)
Article
Engineering, Chemical
Xin-Yan Zhou, Bin He, Yu Zhang, Jia-Ye Ni, Qiu-Ping Liu, Mei Wang, Hai-Min Shen, Yuan-Bin She
Summary: The excessive use of additives in chemical reactions is a problem in industrial processes due to their negative effects on equipment and processes. In this study, a large library of metalloporphyrins was used as catalysts with H2O2 as an oxidant to achieve oxidative functionalization of alkyl aromatics under additive-free and mild conditions. It was discovered that only porphyrin iron(II) had the ability to catalyze the oxygenation of alkyl aromatics with H2O2 under additive-free conditions. The study also investigated the apparent kinetics and mechanisms of the optimal oxygenation system.
Article
Chemistry, Organic
Xiaoguang Yue, Yani Ouyang, Jiashun Zhu, Jingfang Yue, Jiehai Peng, Wanmei Li
Summary: A method of oxidative cracking of olefins' C=C bonds promoted by NaN3 in water was developed, without the use of a photocatalyst. Under blue light irradiation, cheap olefins can be converted to aldehydes or ketones with moderate to good yields at room temperature. Experimental results suggest that NaN3-O-2 charge-transfer complexes may be formed during the reaction, which are then oxidized and cracked to form aldehydes or ketones.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2023)