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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Reconfigurable photoactuator through synergistic use of photochemical and photothermal effects.
TL;DR: A facile fabrication pathway towards reconfigurability in liquid crystal polymer networks based on a synergistic use of photochemical and photothermal effects is reported, to enable all-optical control over actuator performance, paving way towards reprogrammable soft micro-robotics.
Journal ArticleDOI
Near-infrared upconversion-activated CRISPR-Cas9 system: A remote-controlled gene editing platform.
Yongchun Pan,Yongchun Pan,Jingjing Yang,Xiaowei Luan,Xinli Liu,Xueqing Li,Jian Yang,Ting Huang,Lu Sun,Yuzhen Wang,Youhui Lin,Yujun Song +11 more
TL;DR: A near-infrared (NIR) light–responsive nanocarrier of CRISPR-Cas9 for cancer therapeutics based on upconversion nanoparticles (UCNPs) is designed and successfully inhibited the proliferation of tumor cell via NIR light–activated gene editing both in vitro and in vivo.
Journal ArticleDOI
Mastering the Photothermal Effect in Liquid Crystal Networks: A General Approach for Self-Sustained Mechanical Oscillators.
TL;DR: A counter-intuitive approach to create self-sustained oscillation by light irradiation of ordinary photostabilizers in splay-aligned liquid-crystalline networks made from commercial mesogens is developed, making bulk applications to convert sunlight into mechanical work within reach.
Journal ArticleDOI
Photoinduced Reversible Solid-to-Liquid Transitions for Photoswitchable Materials
Wen-Cong Xu,Shaodong Sun,Si Wu +2 more
TL;DR: This Review introduces azobenzene compounds that exhibit photoinduced reversible solid-to-liquid transitions, discusses the mechanisms and design principles, and shows their potential applications in healable coatings, adhesives, transfer printing, lithography, actuators, fuels, and gas separation.
Journal ArticleDOI
New molecular switch architectures
TL;DR: Progress in chemically and photoinduced switches and motors is summarized and contextualized such that the reader may gain an appreciation for the novel tools that have come about in the past decade.
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.