Results 51 to 60 of about 400 (141)

Development of chalcones structure‐related to avobenzone: Photoprotection, photostability, and safety evaluation

Photochemistry and Photobiology, EarlyView.
Scaffold hopping strategy used to develop chalcones structure‐related to the avobenzone tautomer. Positive aspects of 2‐hydroxychalcones are highlighted. Abstract Chalcones are α,β‐unsaturated ketones with extended π‐conjugation, making them promising scaffolds for the development of organic UV filters.
Gabriela Zanella Marcon, Taíne de Bastos Brum, Nayara Fernanda Tokashike de Araujo, Gabriela Lascala Ramos, Bruna Cogo Borin, Ruth Barin, Aline Ferreira Ourique, André Passaglia Schuch, Andréa Inês Horn Adams, Lorena Rigo Gaspar Cordeiro, Letícia Cruz, Fernando Fumagalli   +11 more
wiley   +1 more source

Assessment of Ocular Surface Pathogen Susceptibility to Ultraviolet‐C (UVC) Light Treatment With a Novel Prototype Device—An In Vitro Study

Veterinary Ophthalmology, Volume 29, Issue 4, July 2026.
ABSTRACT Purpose Assess in vitro efficacy of a device emitting 265 nm UVC light against bacteria isolated from veterinary infectious keratitis. Methods Twenty‐seven clinically‐derived bacterial isolates: Staphylococcus pseudintermedius (n = 10; including n = 2 methicillin‐resistant Staphylococcus pseudintermedius [MRSP]), Staphylococcus aureus (n = 1),
Oliver Joe Williams, Charlotte Dawson, Maria‐Christine Fischer, Siân‐Marie Frosini   +3 more
wiley   +1 more source

Photolyzable Polymer Brushes: Subtractive 3D Structuring of Surfaces Using Water and Light

Angewandte Chemie, Volume 138, Issue 22, 25 May 2026.
Facile structuring of polymer brushes is achieved by flipping the process from controlled growth to controlled brush photolysis. Using surface‐initiated radical ring‐opening polymerization of cyclic monomers with photocleavable cyclobutane rings, photodegradable targets are embedded into the polymer chains. The enabled continuous subtractive patterning
Henrik Kalmer, Federica Sbordone, Phuong T. Do, Kai Mundsinger, Hazal Kayas, Robert T. Jones, Jayanti Mendhi, Tim R. Dargaville, Damien G. Harkin, Lukas Michalek, Andrew Nelson, Hendrik Frisch   +11 more
wiley   +2 more sources

1,1‐and 1,2‐Diborylalkenes: Preparation and Synthetic Applications

Advanced Synthesis &Catalysis, Volume 368, Issue 12, 17 June 2026.
In this review, we highlight recent advances in the synthesis and reactivity of 1,1‐diborylalkenes and 1,2‐diborylalkenes, along with various transformations leading to C‐C, C‐heteroatom, and multicomponent products. By providing a comprehensive and practical resource, this review aims to assist researchers in exploring the synthetic utility of 1,1 and
Jayaram Vankudoth, Maruti Mali, Fabienne Berrée   +2 more
wiley   +1 more source

Electronic Smoking Devices Among University Students: Usage Patterns and Chemical Composition of Inhaled Substances

Analytical Science Advances, Volume 7, Issue 1, June 2026.
ABSTRACT This study investigated the prevalence of electronic smoking device (ESD) use and its associated behavioural and chemical risks among university students in Bahia, Brazil. A cross‐sectional survey was conducted with 355 students from public and private institutions through an online questionnaire between April and May 2023. Among participants,
Eduard F. Valenzuela, Raffael Silva Santos Almeida, Ivana Ferreira Simões, Aline Gonçalves Miranda, Magno Oliveira Ramos, Roberto Rodrigues Bandeira Tosta Maciel, Fernanda Warken Rosa, Aníbal de Freitas Santos Júnior   +7 more
wiley   +1 more source

Cage-confined photocatalysis for wide-scope unusually selective [2 + 2] cycloaddition through visible-light triplet sensitization

Nature Communications, 2020
Light-induced [2 + 2] cycloaddition is the most efficient way to generate cyclobutanes, while suffering from limitations of specific selectivity.
Jing-Si Wang, Kai Wu, Changzhen Yin, Kang Li, Yahao Huang, Jia Ruan, Ximin Feng, Peng Hu, Cheng-Yong Su   +8 more
doaj   +1 more source

Structural‐to‐Functional Complexity Transformations Enabled by Bridged Polyheterocycles: Access to Cis‐1,3‐Diamines and Amino‐Alcohols

ChemistryEurope, Volume 4, Issue 6, June 2026.
Polycyclic intermediates enable stereocontrolled synthesis of densely functionalized cis‐1,3‐diamine and amino alcohol carbocycles and heterocycles via structural‐to‐functional complexity transformations from low‐complexity starting material. Cis‐1,3‐functionalized carbocycles and saturated heterocycles are ubiquitous motifs in natural products ...
Jiayi Zhu, Erica Benedetti, Laurent Micouin   +2 more
wiley   +1 more source

Mechanochemistry of cyclobutanes

Science China Chemistry
AbstractThe field of polymer mechanochemistry has been revolutionized by implementing force-responsive functional groups—mechanophores. The rational design of mechanophores enables the controlled use of force to achieve constructive molecular reactivity and material responses.
Roberto Obregon, Junpeng Wang
openaire   +1 more source

Light‐Driven [2 + 2] Cycloaddition Strategies for the Synthesis of Cyclobuta[b]indoles and Their Derivatives

ChemPhotoChem, Volume 10, Issue 6, June 2026.
This review surveys the literature on light‐driven dearomative [2+2] cycloadditions of indoles, highlighting their power to access complex cyclobuta[b]indole frameworks. Advances in photocatalysis, sensitizer design, and reaction engineering enable selective and sustainable assembly of strained three‐dimensional architectures, expanding opportunities ...
Maria Chiara Cabua, Davide Moi, Alberto Luridiana, Francesco Secci, Emanuele Cocco   +4 more
wiley   +1 more source

Higher Overtone Vibrational Frequencies of Cyclobutane-D8 Using Lie Algebraic Framework

East European Journal of Physics
This research study employs a Lie algebraic framework to investigate the second and third overtone vibrational frequencies and their combination bands in cyclobutane-d8 (C4D8).
A. Ganapathi Rao, K. Lavanya, J. Vijayasekhar   +2 more
doaj   +1 more source