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
Optically Tunable Field Effect Transistors with Conjugated Polymer Entailing Azobenzene Groups in the Side Chains
Jianwu Tian,Lulu Fu,Zitong Liu,Hua Geng,Yanan Sun,Gaobo Lin,Xisha Zhang,Guanxin Zhang,Deqing Zhang +8 more
Journal ArticleDOI
Optically driven translational and rotational motions of microrod particles in a nematic liquid crystal.
Alexey Eremin,Pemika Hirankittiwong,Nattaporn Chattham,Hajnalka Nádasi,Ralf Stannarius,Jumras Limtrakul,Osamu Haba,Koichiro Yonetake,Hideo Takezoe +8 more
TL;DR: In this paper, a small amount of azo-dendrimer molecules dissolved in a liquid crystal enables translational and rotational motions of microrods in liquid crystal matrix under unpolarized UV light irradiation.
Journal ArticleDOI
Design, Synthesis, and Inhibitory Activity of Potent, Photoswitchable Mast Cell Activation Inhibitors
TL;DR: The design, synthesis, and activity of photoswitchable mast cell activation inhibitors are reported, which possess significantly greater potency than an original, chromone-based antiallergic agent in mast cell degranulation assays.
Journal ArticleDOI
Anion-tunable control of thermal Z→E isomerisation in basic azobenzene receptors.
TL;DR: It is reported that thermal Z→E isomerisation of simple azobenzene urea derivatives is selectively and predictably controlled by anion binding.
Journal ArticleDOI
Power of light – Functional complexes based on azobenzene molecules
Bartosz Tylkowski,Anna Trojanowska,Anna Trojanowska,Valentina Marturano,Martyna Nowak,Lukasz Marciniak,Marta Giamberini,Veronica Ambrogi,Pierfrancesco Cerruti +8 more
TL;DR: A significant amount of academic and industrial research efforts are devoted to design, synthesis and to investigate the important determinants of stabilizing/destabilizing photo-sensitive based complexes capable of undergoing repeated light-triggered conformation changes.
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.