Results 31 to 40 of about 6,232 (230)

Concentration dependence of thermal isomerization process of methyl orange in ethanol [PDF]

open access: yes, 2017
The thermal isomerization (TI) rates of methyl orange (MO) and 4-dimethylaminoazobenzene (DMAAB) in ethanol (EtOH) are measured. Usually TI rates of azobenzene dyes are known to be concentration independent.
KINOSHITA Eri   +3 more
core   +2 more sources

Iminothioindoxyl as a molecular photoswitch with 100 nm band separation in the visible range

open access: yesNature Communications, 2019
The design of photoswitches which operate in the visible light regime, show a large separation of absorption bands and are functional in various solvents is challenging.
Mark W. H. Hoorens   +9 more
doaj   +1 more source

The role of alkyl substituents in deazaadenine-based diarylethene photoswitches

open access: yesBeilstein Journal of Organic Chemistry, 2016
Diarylethenes are an important class of reversible photoswitches and often claimed to require two alkyl substituents at the carbon atoms between which the bond is formed or broken in the electrocyclic rearrangement.
Christopher Sarter   +2 more
doaj   +1 more source

Emission color tuning and white-light generation based on photochromic control of energy transfer reactions in polymer micelles [PDF]

open access: yes, 2016
We encapsulate a fluorescent donor molecule and a photochromic acceptor unit (photoswitch) in polymer micelles and show that the color of the emitted fluorescence is continuously changed from blue to yellow upon light-induced isomerization of the ...
Andréasson, Joakim   +8 more
core   +2 more sources

Photocontrolled DNA minor groove interactions of imidazole/pyrrole polyamides

open access: yesBeilstein Journal of Organic Chemistry, 2020
Azobenzenes are photoswitchable molecules capable of generating significant structural changes upon E-to-Z photoisomerization in peptides or small molecules, thereby controlling geometry and functionality.
Sabrina Müller   +5 more
doaj   +1 more source

Diaryl-hemiindigos as visible light, pH, and heat responsive four-state switches and application in photochromic transparent polymers

open access: yesNature Communications, 2023
Photoswitches are indispensable tools for responsive chemical nanosystems and are used today in almost all areas of the natural sciences. Hemiindigo (HI) derivatives have recently been introduced as potent photoswitches, but their full applicability has ...
Maximilian Sacherer   +2 more
doaj   +1 more source

A New Twist in the Photophysics of the GFP Chromophore: A Volume-Conserving Molecular Torsion Couple [PDF]

open access: yes, 2018
The simple structure of the chromophore of the green fluorescent protein (GFP), a phenol and an imidazolone ring linked by a methyne bridge, supports an exceptionally diverse range of excited state phenomena.
Addison   +76 more
core   +2 more sources

Coherent ultrafast torsional motion and isomerization of a biomimetic dipolar photoswitch [PDF]

open access: yes, 2010
Femtosecond fluorescence up-conversion, UV-Vis and IR transient absorption spectroscopy are used to study the photo-isomerization dynamics of a new type of zwitterionic photoswitch based on a N-alkylated indanylidene pyrroline Schiff base framework (ZW ...
Andrea Cannizzo   +63 more
core   +4 more sources

Photophysical Properties of Donor-Acceptor Stenhouse Adducts and Their Inclusion Complexes with Cyclodextrins and Cucurbit[7]uril

open access: yesMolecules, 2020
Donor-acceptor Stenhouse adducts (DASAs) are a novel class of solvatochromic photoswitches with increasing importance in photochemistry. Known for their reversibility between open triene and closed cyclized states, these push-pull molecules are ...
Liam Payne   +3 more
doaj   +1 more source

Investigating nano-structuring within imidazolium ionic liquids: A thermodynamic study using photochromic molecular probes [PDF]

open access: yes, 2009
Following previous studies involving the thermal relaxation of spirocyclic compounds we extended our studies to investigate the formation of nano-structured domains in ionic liquids (ILs).
Byrne, Robert   +3 more
core   +1 more source

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