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
Review of the recent progress in photoresponsive molecularly imprinted polymers containing azobenzene chromophores.
TL;DR: This article reviews the recent developments on PMIPs containing azobenzene and discusses preparation methods, properties, applications, as well as advantages and disadvantages of conventionalPMIPs.
Journal ArticleDOI
Remote control over folding by light
Zhilin Yu,Stefan Hecht +1 more
TL;DR: This feature article summarizes the development of photoswitchable foldamers, focussing on various design approaches that incorporate the photoswitches either at the side chains, as tethered loops, or directly in the main chain.
Journal ArticleDOI
Stimuli-Responsive Metal-Organic Frameworks with Photoswitchable Azobenzene Side Groups
TL;DR: A particular focus of this review is the effect of the azobenzene photoswitching on the host-guest interaction, enabling smart applications of the material.
Journal ArticleDOI
On-demand regulation of photochromic behavior through various counterions for high-level security printing
TL;DR: A facile and effective strategy to engineer controllable photo chromic properties by varying the counterions in a series of zinc complexes consisting of a spirolactam-based photochromic ligand is reported, showing opportunities for the development of smart materials with dynamically controLLable responsive behavior in advanced optoelectronic applications.
Journal ArticleDOI
Isomerization of One Molecule Observed through Tip-Enhanced Raman Spectroscopy
TL;DR: The reversible photoisomerization of one molecule is captured in TERS trajectories, and the unique signature of single molecule isomerization is observed in the form of anticorrelated flip-flops between two distinct spectra with two discrete, on- and off-levels.
References
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Journal ArticleDOI
Photomechanics: directed bending of a polymer film by light.
TL;DR: It is shown that a single film of a liquid-crystal network containing an azobenzene chromophore can be repeatedly and precisely bent along any chosen direction by using linearly polarized light.
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Light-driven motion of liquids on a photoresponsive surface
TL;DR: The light-driven motion of a fluid substance in a surface-modified glass tube suggests potential applicability to microscale chemical process systems.
Journal ArticleDOI
Design and synthesis of chromophores and polymers for electro-optic and photorefractive applications
TL;DR: The ability of nonlinear optical materials to transmit, process and store information forms the basis of emerging optoelectronic and photonic technologies as discussed by the authors, where organic chromophore-containing polymers, in which the refractive index can be controlled by light or an electric field, are expected to play an important role.
Journal ArticleDOI
Ultrafast Dynamics of Photochromic Systems.
Naoto Tamai,Hiroshi Miyasaka +1 more
TL;DR: Reaction dynamics of the photochromic systems such as spiropyran, flugide and diarylethene derivatives in femto- to nano-second time region was reviewed and mechanisms of rapid reaction channels in various phases were discussed.