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
Light-regulated crystal growth of π-conjugated luminophores in an azobenzene matrix
TL;DR: In this paper, a photoresponsive solid and a mechanochromic luminescent material were designed to co-assemble on the molecular level by introducing identical alkyl and oligo(ethylene glycol) chains.
Posted Content
Excited state, non-adiabatic dynamics of large photoswitchable molecules using a chemically transferable machine learning potential.
TL;DR: In this paper, a neural network based on diabatic states is proposed to accelerate the simulation of photoisomerization of azobenzene derivatives, which can be used for virtual screening of photoactive compounds.
Journal ArticleDOI
Insights into the Difference Between Rotaxane and Pseudorotaxane.
TL;DR: The result obtained indicated that the ferrocene group cannot prevent α-CD dethreading under UV irradiation, and 1⊂α-CD is just a pseudo[2]rotaxane.
Journal ArticleDOI
Photocontrolled On-Surface Pseudorotaxane Formation with Well-Ordered Macrocycle Multilayers.
Felix B. Schwarz,Thomas Heinrich,Thomas Heinrich,J. Ole Kaufmann,Andreas Lippitz,Rakesh Puttreddy,Kari Rissanen,Wolfgang E. S. Unger,Christoph A. Schalley +8 more
TL;DR: The photoinduced pseudorotaxane formation between a photoresponsive axle and a tetralactam macrocycle was investigated in solution and on glass surfaces with immobilized multilayers of macrocycles, leading to an increase of the molecular order.
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.