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
Dynamically Controlled Electronic Behavior of Stimuli-Responsive Materials: Exploring Dimensionality and Connectivity
Gabrielle A. Leith,Corey R. Martin,Abhijai Mathur,Preecha Kittikhunnatham,Kyoung Chul Park,Natalia B. Shustova +5 more
Journal ArticleDOI
Visible-light responsive hydrogen-bonded supramolecular polymers based on ortho-tetrafluorinated azobenzene
Tian-Guang Zhan,Tian-Guang Zhan,Meng-Di Lin,Jie Wei,Li-Juan Liu,Meng-Yan Yun,Lin Wu,Si-Tai Zheng,Huan-Huan Yin,Lichun Kong,Kang-Da Zhang,Kang-Da Zhang +11 more
TL;DR: In this article, a hydrogen-bonded supramolecular polymers were constructed by using a linear molecule, which consists of two ureido-pyrimidinone (UPy) moieties connected by a photochromic ortho-tetrafluorinated azobenzene (TFAB) linker.
Journal ArticleDOI
Dynamics of Inter-DNA Chain Interaction of Photoresponsive DNA.
TL;DR: The time-resolved diffusion method was used to trace the dissociation/association processes of photoresponsive DNA and the difference in the melting temperatures of DNA between tethered trans- and cis-azobenzene is explained by the different rate of dissociation of the double-stranded form.
Journal ArticleDOI
Photoresponsive DNA materials and their applications.
TL;DR: A comprehensive overview of exciting developments in the design of photoresponsive DNA materials is provided, and a range of applications in catalysis, sensing and drug delivery/release are showcased.
Journal ArticleDOI
Unraveling the Thermal Isomerization Mechanisms of Heteroaryl Azoswitches: Phenylazoindoles as Case Study.
TL;DR: A mechanistic study employing phenylazoindoles as a model reference, combining spectroscopic experiments with comprehensive computational analysis will elucidate the intrinsic correlations between the molecular structure of the switch and its thermal behavior, allowing a more rational design transferable to various heteroaryl azoswitches.
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.