Journal ArticleDOI
Photoisomerization in different classes of azobenzene
TLDR
This critical review details the studies completed to date on the 3 main classes of azobenzene derivatives and explains the mechanism behind the isomerization mechanism.Abstract:
Azobenzene undergoes trans → cisisomerization when irradiated with light tuned to an appropriate wavelength. The reverse cis →transisomerization can be driven by light or occurs thermally in the dark. Azobenzene's photochromatic properties make it an ideal component of numerous molecular devices and functional materials. Despite the abundance of application-driven research, azobenzene photochemistry and the isomerization mechanism remain topics of investigation. Additional substituents on the azobenzene ring system change the spectroscopic properties and isomerization mechanism. This critical review details the studies completed to date on the 3 main classes of azobenzene derivatives. Understanding the differences in photochemistry, which originate from substitution, is imperative in exploiting azobenzene in the desired applications.read more
Citations
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Journal ArticleDOI
The Halogen Bond
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TL;DR: The specific advantages brought up by a design based on the use of the halogen bond will be demonstrated in quite different fields spanning from material sciences to biomolecular recognition and drug design.
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Spiropyran-based dynamic materials
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Stimuli-responsive supramolecular polymeric materials.
TL;DR: This critical review of recent developments in supramolecular polymeric materials is addressed, which can respond to appropriate external stimuli at the fundamental level due to the existence of noncovalent interactions of the building blocks.
References
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Journal ArticleDOI
Ultrafast dynamics of the azobenzene-coumarin complex: investigation of cooling dynamics measured by an integrated molecular thermometer.
TL;DR: The energy dissipation mechanism from photoexcited azobenzene (Az) was studied by femtosecond time-resolved UV absorption spectroscopy using 7-amino-4-trifluoromethylcoumarin (ATC) as a probe and three major components were observed in the transient kinetics of Az-Pro-ATC vibrational cooling.
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Characterization of zinc-binding properties of a novel imidase from Pseudomonas putida YZ-26
TL;DR: Results show that each subunit of the imidase binds the zinc ion by 1:1 stoichiometry with apparent binding constant of 9.5 x 10(8)M(-1), showing that these residues may critically affect both enzymatic activity and conformation.
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Potential energy surfaces for the S1-S0 relaxation of trans-diphenyldiphosphene in the P=P rotation-restricted condition.
TL;DR: It has been confirmed that the discussion for the photochemistry of DPP is also true for a realistic diphosphene protected by a bulky substituent.
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Vibrational Manifold Considerations for the Metal Indicator Dye 2-(2-Pyridylazo)-1-Naphthol
M. E. Long,P. J. Trotter +1 more
TL;DR: In this paper, the vibrations and groups causing the vibronic activity of pyridyl azonaphthol dyes were investigated by resonance Raman spectroscopy and molecular orbital calculations and it was concluded that the resolvable vibronic manifold has its origin in several group vibrations.
Journal ArticleDOI
Trans–cis photoisomerization of azobenzene by n → π* excitation: A semiclassical dynamics study
TL;DR: In this paper, a realistic dynamics simulation study was performed for the trans-cis photoisomerization of azobenzene triggered by the n ǫ→π * excitation and the results showed that the formation of cis isomer follows the rotational motion around the N N N bond.