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
Acid-catalysed liquid-to-solid transitioning of arylazoisoxazole photoswitches
Luuk Kortekaas,Julian Simke,Niklas B. Arndt,Marcus Böckmann,Nikos L. Doltsinis,Bart Jan Ravoo +5 more
TL;DR: The tuning of isomerisation kinetics from days to seconds by the pKa of the acid not only opens up new reactivity in solution, but also the solid-state photoswitching of azoisoxazoles can be efficiently reversed with selected acid vapours, enabling acid-gated photoswitchable surface adhesion.
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Potential photo-switching sorbents for CO2 capture – A review
TL;DR: In this paper , a review of photo-switching materials for CO 2 capture is presented, highlighting photo-responsive adsorbents of CO 2 and some examples of adsorents with photo switching properties.
Journal ArticleDOI
Shapeshifting Diffractive Optical Devices
TL;DR: Shapeshifting diffractive optical elements can be written on an erasable photoresponsive material, whose morphology can be changed in real time to provide different on-demand optical functionalities as discussed by the authors .
Journal ArticleDOI
Recent near-infrared light-activated nanomedicine toward precision cancer therapy.
TL;DR: In this paper, an overview of recent advances in near-infrared light-activated nanomedicine for cancer therapeutic applications is presented, and the challenges and future trends of the use of NIR light in biomedical applications are also provided as a conclusion.
Journal ArticleDOI
Functionalization of photochromic dithienylmaleimides
TL;DR: In this paper, a Perkin-type condensation of two thiophene precursors is used as the key step to assemble the maleimide core, which allows the synthesis of non-symmetrically substituted dithienylmaleimides, such as photochromic amino acids.
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.