Results 61 to 70 of about 12,987 (261)

Photochromic organic-inorganic hybrid nanocomposite hard coatings with tailored fast switching properties [PDF]

, 1999
A recently developed photochromic organic-inorganic nanocomposite (Nanomer) coating system is investigated, which is based on an epoxysilane as network former, different bisepoxides as spacer and an organic amine as thermal cross-linker.
Fries, Kira, Mennig, Martin, Schmidt, Helmut K.   +2 more
core   +2 more sources

Gated photochromism of 1,2-diarylethenes [PDF]

, 2007
A dithienylethene derivative containing a cyclobutene-1,2-dione skeleton does not exhibit photochromic properties. However, when both ketone functions are protected with cyclic acetal groups, photochromic behavior is ...
Belser, Peter, Kühni, Joël
core   +1 more source

Photochromic properties of spirooxazine dyes in ormocer gels and coatings [PDF]

, 1992
The wet- and "cold"-chemical characteristic of sol-gel process makes the sol-gel derived materials offer exciting potentials as hosts for photochromic dyes.
Hou, Lisong, Mennig, Martin, Schmidt, Helmut K.   +2 more
core   +2 more sources

A Universal Strategy for Reversible Photochromism of Viologen Derivatives in Solutions

Advanced Optical Materials
Viologens are important members of organic photochromic (PC) materials. However, the photochromism of the viologen derivatives in solutions, especially in water, can be hardly detected due to the restricted photo‐induced electron transfer (PET) caused by
Zeying Guo, Yangzhe Su, Hao Zong, Fan Zhou, Min Wang, Gang Zhou   +5 more
semanticscholar   +1 more source

Photoinduced Electron Transfer (PET) as Key to Accelerate the Cycloreversion Reaction of Arylquadricyclanes

Chemistry – A European Journal, EarlyView.
It is demonstrated that the photoinduced cycloreversion of a methoxynaphthylquadricyclane in the presence of suitable photocatalysts gives quantitatively the corresponding norbornadiene. As this photochromic norbornadiene‐quadricyclane cycle has favorable properties for light energy conversion, this method provides a useful tool for the targeted ...
Julian Felix Maria Hebborn, Heiko Ihmels, Marco Löcker, Thomas Paululat, Robin Schulte   +4 more
wiley   +1 more source

Fluorescent Diarylethenes With Polar Groups: Synthesis, Spectra, and Optical Microscopy Applications

Chemistry – A European Journal, EarlyView.
Blinking green and flashing red: photo‐switchable and photo‐activatable probes emitting green and red light were prepared and applied as bioconjugates in super‐resolution optical microscopy. ABSTRACT The use of photoactivatable fluorescent diarylethenes (fDAEs) in biology‐related light microscopy has been restricted by the lack of probes having freely ...
Kakishi Uno, Sven Nagorny, Ayse Aktalay, Dojin Kim, Mariano L. Bossi, Vladimir N. Belov, Stefan W. Hell   +6 more
wiley   +1 more source

Photochromic and Photocatalytic Properties of Ultra-Small PVP-Stabilized WO₃ Nanoparticles

Molecules, 2019
Tungsten oxide-based bulk and nanocrystalline materials are widely used as photocatalytic and photo- and electrochromic materials, as well as materials for biomedical applications.
Daniil A. Kozlov, Alexander B. Shcherbakov, Taisiya O. Kozlova, Borislav Angelov, Gennady P. Kopitsa, Alexey V. Garshev, Alexander E. Baranchikov, Olga S. Ivanova, Vladimir K. Ivanov   +8 more
doaj   +1 more source

TWO DIFFERENT TYPES OF PHOTOCHEMISTRY IN PHYCOERYTHROCYANIN α-SUBUNIT [PDF]

, 1993
The photochemical activities of phycoerythrocyanin α-subunits from Mastigocladus laminosus separated by isoelectric focusing were tested by irradiating at 500, 550, 577 and 600 nm.
Bjorn L. O., Braslavsky S. E., Braune W., Bryant D. A., Falk H., Fiiglistaller P., Gantt E., Kufer W., MacColl R., Maruthi Sai P. S., Scheer H., Siebzehnrubl S., Zhao K.-H.   +12 more
core   +1 more source

Photochromism of a Spiropyran in Low-Temperature Matrices: Unprecedented Bidirectional Switching between a Merocyanine and an Allene Intermediate.

Journal of Physical Chemistry A, 2022
Photochromism of spiropyrans has attracted much attention due to its potential in many light-controlled system applications. However, several fundamental aspects regarding the structure, energetics, and mechanistic details of the transformations of ...
Cláudio M. Nunes, N. Pereira, R. Fausto
semanticscholar   +1 more source

Bifunctional Molecular Switches in Fused Diarylethene–Rhodamine Systems

ChemPhotoChem, EarlyView.
Spectroscopic and time‐dependent density‐functional theory studies show that these novel rhodamine‐based diarylethene (DAE) compounds display intense UV absorption, undergo reversible two‐step protonation involving triazole and rhodamine units, and respond selectively to acid, base, and metal ions.
Bassima Hoteit, Shunan Zhao, Corentin Poidevin, Arnaud Fihey, Keith Man‐Chung Wong, Julien Boixel   +5 more
wiley   +1 more source