Results 41 to 50 of about 58,423 (302)

The photophysics and photochemistry of aromatic 1,3-dicarbonyl compounds used as UVA sunscreens [PDF]

, 1999
UV radiation can cause harmful effects to human skin, including premature skin ageing and skin cancer. Historically, sunscreens were developed to filter out UVB (290 nm-320 nm), but now the importance of UVA (320 nm-400 nm) sunscreens is realised.
Coultous, Catherine Jane
core  

Photochemistry and Photophysics of Thienocarbazoles¶ [PDF]

Photochemistry and Photobiology, 2003
Two methylated thienocarbazoles and two of their synthetic nitro-precursors have been examined by absorption, luminescence, laser flash photolysis and photoacoustic techniques. Their spectroscopic and photophysical characterization involves fluorescence spectra, fluorescence quantum yields and lifetimes, and phosphorescence spectra and phosphorescence ...
Melo, J. Seixas de, Rodrigues, L.M., Serpa, C., Arnaut, L.G., Ferreira, Isabel C.F.R., Queiroz, Maria João R.P.   +5 more
openaire   +4 more sources

Photo‐Degradable Polyester Networks and Multi‐Photon Printed Objects Based on Cyclic Ketene Acetals

Advanced Functional Materials, EarlyView.
The current work introduces a photoreversible polyester network derived from radical ring‐opening polymerization of cyclic ketene acetals. It combines photoreversible cross‐linking with initiator‐free multi‐photon printing. Reversible network formation, tunable mechanical properties, and selective degradation highlight its potential as a versatile ...
Till Meissner, Julian Fanelli, Vinh Xuan Truong, Rob Jones, Jens Gaitzsch, Christopher Barner‐Kowollik   +5 more
wiley   +1 more source

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

Advanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies, Bin Han, Paolo Samorì   +2 more
wiley   +1 more source

Spin-polarized lasing in manganese doped perovskite microcrystals

Nature Communications
Spin-polarized lasers have demonstrated many superiorities over conventional lasers in both performance and functionalities. Hybrid organic-inorganic perovskites are emerging spintronic materials with great potential for advancing spin-polarized laser ...
Penghao Li, Zhonghao Zhou, Guangliu Ran, Tongjin Zhang, Zhengjun Jiang, Haidi Liu, Wenkai Zhang, Yongli Yan, Jiannian Yao, Haiyun Dong, Yong Sheng Zhao   +10 more
doaj   +1 more source

Stable organic self-assembled microwire lasers for chemical vapor sensing

Communications Chemistry, 2021
Organic microlaser sensors are highly promising for chemical vapor detection due to their chemical versatility, but their poor stabilities are hampering applications.
Zheming Chen, Chenghu Dai, Wei Xiong, Yanke Che, Chuang Zhang   +4 more
doaj   +1 more source

Solar Photochemistry in Flow [PDF]

Topics in Current Chemistry, 2018
AbstractIn recent years, photochemistry has been a highly active research field. This renaissance is linked to the upsurge of photoredox catalysis, a versatile platform for synthetic methodologies using visible light photons as a traceless reagent. In contrast with UV, visible light constitutes almost half of the ground solar irradiance, making the use
Dario Cambié, Timothy Noël
openaire   +5 more sources

In Situ Magnetic Ordering and Microfabrication of Liquid Crystal Networks with Discretized Alignment

Advanced Functional Materials, EarlyView.
Miniaturizing liquid crystal network actuators typically demands costly laser writing or digital light processing. A low‐cost photolithography platform couples rotating photomasks with a Halbach magnetic array to discretize in‐plane molecular alignment down to 50 µm, producing programmable, light‐responsive grippers, checkerboards, and origami‐inspired
Matthew Gene Scarfo, Ramón S. Herrera Restrepo, Irving Hafed Tejedor Garcia, Hamed Shahsavan   +3 more
wiley   +1 more source

Photochemistry in Japan: the Inoue Photochirogenesis Project -a research profile

, 2000
The Inoue Photochirogensis Project is part of the ERATO program (Exploratory Research for Advanced Technology) of the Japan Science and Technology Corporation (JST). The project began in 1996, and is located in Toyonaka, Osaka. The project director is Dr.
Inoue, Y., Naitoh, Y., Nakamura, A., Ishida, H., Hembury, G.A., Oelgemoeller, M.   +5 more
core   +1 more source

Photoinduced Interfacial Electronic Modulation in Fe2O3‐BiVO4 Heterostructures for Enhanced Photo‐Assisted Zn‐Air Batteries

Advanced Functional Materials, EarlyView.
Light irradiation activates the Fe2O3‐BiVO4 heterostructure, enabling efficient solar‐electrochemical coupling in zinc‐air batteries. The built‐in electric field drives directional charge separation, guiding photoelectrons toward oxygen reduction sites and accumulating holes for oxygen evolution, thereby reducing polarization and enhancing discharge ...
Yili Liu, Zhenjiang Du, Enming Liu, Hongzhou Dong, Jianguang Feng, Beili Pang, Lifeng Dong, Liyan Yu   +7 more
wiley   +1 more source