Results 51 to 60 of about 23,102 (300)

The still unknown azobenzene - Wavelength dependent photoanisotropy in amorphous azobenzene polymers

open access: yesOptics Express, 2013
We demonstrate a new type of anisotropy in thin films of amorphous azobenzene polymers induced between 570 and 633 nm, where the absorbance in the film is on the order of 0.05. The anisotropy has a pronounced radial contribution. This observation points to an additional mechanism for the alignment of azobenzene molecules.
Ramanujam, P.S.   +2 more
openaire   +3 more sources

Building photoswitchable 3,4'-AMPB peptides: Probing chemical ligation methods with reducible azobenzene thioesters

open access: yesBeilstein Journal of Organic Chemistry, 2012
Photoswitchable peptides were synthesized by using cysteine- and auxiliary-based native chemical ligation reactions. For this purpose, the two regioisomeric azobenzene building blocks 3,4'-AMPB thioester 1b and 4,4'-AMPB thioester 2b were employed in the
Gehad Zeyat, Karola Rück-Braun
doaj   +1 more source

Integrating stimulus responsive materials and microfluidics – The key to next generation chemical sensors [PDF]

open access: yes, 2012
New generations of chemical sensors require both innovative (evolutionary) engineering concepts and (revolutionary) breakthroughs in fundamental materials chemistry, such as the emergence of new types of stimuli responsive materials.
Czugala, Monika   +2 more
core   +1 more source

Photo-Controlled Adhesives Based on Photoinduced Solid-to-Liquid Transition of an Azobenzene Compound

open access: yesOrganic Materials, 2020
The development of photo-controlled adhesives can overcome the problems associated with daily lives and industrial applications. Adhesion is a multidiscipline field of engineering, physics, and chemistry.
Bing Niu   +4 more
doaj   +1 more source

Optically and thermally induced molecular switching processes at metal surfaces [PDF]

open access: yes, 2012
Using light to control the switching of functional properties of surface-bound species is an attractive strategy for the development of new technologies with possible applications in molecular electronics and functional surfaces and interfaces. Molecular
Tegeder, Petra
core   +1 more source

Photomechanical Azobenzene Crystals [PDF]

open access: yesCrystals, 2019
Photomechanically responsive materials are promising candidates for future smart actuator applications. The photo-responsive behaviors originate from the photoisomerization of photochromic molecules. A typical photochromic compound, azobenzene, has been studied extensively in the solution state and has played a crucial role in the photomechanical ...
Takuya Taniguchi   +2 more
openaire   +2 more sources

Two-colour light activated covalent bond formation

open access: yesNature Communications, 2022
Dual-wavelength photochemical systems open up new avenues for novel lithographic techniques but currently only few wavelength-orthogonal photoreactive compounds undergoing reversible photoreaction are known.
Sarah L. Walden   +5 more
doaj   +1 more source

Cationic Azobenzenes as Light-Responsive Crosslinkers for Alginate-Based Supramolecular Hydrogels

open access: yesPolymers
Azobenzene photoswitches are fundamental components in contemporary approaches aimed at light-driven control of intelligent materials. Significant endeavors are directed towards enhancing the light-triggered reactivity of azobenzenes for such ...
M. Di Martino   +5 more
semanticscholar   +1 more source

Comparison of the reactivity of the low buried-volume carbene complexes (ITMe)2Pd(PhC≡CPh) and (ITMe)2Pd(PhN=NPh) [PDF]

open access: yes, 2018
The novel Pd(0)-azobenzene complex (ITMe)2Pd(PhN=NPh) (5) (ITMe = 1,3,4,5-tetramethylimidazol 2-ylidene) has been isolated and characterized in the solid state and by cyclic voltammetry.
Cazin C. S. J.   +7 more
core   +1 more source

Meta-Substituted Asymmetric Azobenzenes: Insights into Structure–Property Relationship

open access: yesMolecules
This article presents a comprehensive investigation into the functionalization of methoxyphenylazobenzene using electron-directing groups located at the meta position relative to the azo group.
Anna Laura Sanna   +4 more
doaj   +1 more source

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