Results 91 to 100 of about 12,987 (261)

INFLUÊNCIA DA RIGIDEZ DO MEIO NA CINÉTICA DO FOTOCROMISMO DE DITIZONATOS METÁLICOS

Química Nova
The kinetics of photoisomerization and thermal back reaction of mercury(II) and zinc(II) dithizonates, M(HDz)2, were analyzed by photolysis assays in fluid solution and in poly(methyl methacrylate), PMMA, films.
Cristiane Lázara de Barros, Newton Martins Barbosa Neto, Antonio Otavio T. Patrocinio   +2 more
doaj   +1 more source

Photo-responsive polymeric structures based on spiropyran [PDF]

, 2012
Spiropyrans are one of the most popular classes of photochromic compounds that change their optical and structural properties in response to external inputs such as light, protons and metal ions, making them ideal molecules for the fabrication of ...
Adelmann, Alonso, Anastasiadis, Angiolini, Bardavid, Bassetti, Beebe, Beiermann, Beiermann, Bell, Benito-Lopez, Benito-Lopez, Berkovic, Byrne, Byrne, Byrne, Byrne, Byrne, Cheng, Chung, Coleman, Coleman, Connal, Darwish, Dattilo, Davis, Delaire, Dong, Doron, Dürr, Fischer, Florea, Florea, Fries, Fries, Fries, Garcia, Guo, Higuchi, Hirshberg, Imai, Irie, Ivanov, Joseph, Kimura, Kobayashi, Kotharangannagari, Kwon, LaVan, Lee, Lee, Lee, Lee, Levy, Li, Lin, Lygeraki, Minkin, Natali, O'Bryan, Park, Park, Pennakalathil, Piech, Radu, Richter, Rosario, Rosario, Sakai, Samanta, Samoladas, Saragi, Satoh, Shiraishi, Shiraishi, Stauffer, Stitzel, Such, Sugiura, Suzuki, Tachibana, Wang, Zhao   +82 more
core   +2 more sources

photochromism

, 2014
Citation: 'photochromism' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.P04589 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms. Requests for commercial
openaire   +1 more source

Diarylethene-modified nucleotides for switching optical properties in DNA

Beilstein Journal of Organic Chemistry, 2012
Diarylethenes were attached to the 5-position of 2’-deoxyuridine in order to yield three different photochromic nucleosides. All nucleosides were characterized with respect to their absorption and photochromic properties. Based on these results, the most
Sebastian Barrois, Hans-Achim Wagenknecht   +1 more
doaj   +1 more source

Photoswitching in azo dyes bearing thienylpyrrole and benzothiozole heterocyclic systems [PDF]

, 2012
Dedicated to the Centenary of the Portuguese Chemical SocietyVisible light promotes the conversion of the E-isomer of benzothiazol-2-yl and benzothiazol-6-yl diazenes to the thermal unstable Z-isomer that reverts in few seconds to the initial form.
Castro, M. Cidália R., Coelho, Paulo J., Fonseca, A. Maurício C., Raposo, M. Manuela M.   +3 more
core   +1 more source

Novel photochromic 2,2´-bithiophene azo dyes [PDF]

, 2009
The photochromic behaviour of two series of 2,2’-bithiophene azo dyes in THF solutions was studied. The photochromic properties and colour constancy were strongly dependent on the substitution pattern of the dyes.
Carvalho, Luís H. Melo de, Coelho, Paulo J., Moura, João C. V. P., Raposo, M. Manuela M.   +3 more
core   +1 more source

Bioinspired Light‐Driven Organic Rotary Molecular Systems

ChemistryEurope, Volume 4, Issue 1, January 2026.
This review explores the evolution of bioinspired light‐driven rotary molecular systems (RMSs), highlighting the integration of natural chromophore‐based fragments to enhance quantum efficiency, photostability, and biocompatibility. Key strategies to optimize photochemical performance and broaden functional applications are discussed, providing a ...
Lidia Hortigüela, Sara P. Morcillo
wiley   +1 more source

Substituent effects in N-acetylated phenylazopyrazole photoswitches

Beilstein Journal of Organic Chemistry
Phenylazopyrazole photoswitches proved to be valuable structural motifs for various applications ranging from materials science to medicine. Despite their potential, their structural diversity is still limited and a larger pool of substitution patterns ...
Radek Tovtik, Dennis Marzin, Pia Weigel, Stefano Crespi, Nadja A. Simeth   +4 more
doaj   +1 more source

Novel synthesis and characterisation of 3,3-dimethyl-50-(2-benzothiazolyl)- spironaphth(indoline-2,30-[3H]naphth[2,1-b] [1,4]oxazine) derivatives [PDF]

, 2009
Novel modified spirooxazines (SOs) with additional chelating groups were synthesised and the crystal structure of one of these was determined. UV–vis spectroscopic characterization of the photoisomerization of the SO derivatives shows that the ...
Alhashimy, Atabekyan, Baillet, Benkovic, Bertelson, Boeyens, Byrne, Byrne, Cao, Chamonttin, Chu, Clegg, Collins, Crano, Deligeorgiev, Dermot Diamond, Desvergne, Favaro, Feringa, Gőrner, Hirschberg, Irie, Jeliazkova, Kawata, Ko, Le Baccon, Lehn, Lokshin, Löhr, Maeda, Miler-Srenger, Millini, Minkin, Minkovska, Nameer Alhashimy, Nishikiori, Phillips, Pimienta, Pina, Preigh, Radu, Robert Byrne, Rosario, Scarmagnani, Schaffner, Stela Minkovska, Tamai, Tamaki, Taylor, Tian, Uznanski, Wojtyk, Zhou   +52 more
core   +1 more source

Influence of Binder Type on Color Characteristics of Cotton Fabric Colored with a Photochromic Colorant

Journal of Natural Fibers, 2018
Photochromic colorants change rapidly and reversibly from colorless to colored state when activated by ultraviolet radiation. They can be applied on textile substrates with use of organic binders.
Vandana Jalan, Bhupendra Singh Butola
doaj   +1 more source