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
Manipulating Spin Transition To Achieve Switchable Multifunctions.
Yin-Shan Meng,Tao Liu +1 more
TL;DR: This Account reviews the recent advances in the usage of spin transition of metal ions as actuators for tuning the magnetic, dielectric, fluorescence, and mechanical properties, and focuses on the study of two spin-transition categories, including spin-crossover of one metal ion and metal-to-metal charge transfer (MMCT).
Journal ArticleDOI
Molecular photoswitches in aqueous environments
TL;DR: Water-solubility of photoswitchable organic molecules has been studied in this article, where the authors focus on fully water-soluble photoswitches, such as those used in biological environments, in both in vitro and in vivo studies.
Journal ArticleDOI
Driving Unidirectional Molecular Rotary Motors with Visible Light by Intra- And Intermolecular Energy Transfer from Palladium Porphyrin
Arjen Cnossen,Lili Hou,Michael M. Pollard,Philana V. Wesenhagen,Wesley R. Browne,Ben L. Feringa +5 more
TL;DR: Visible light driven rotation was confirmed to be unidirectional and with similar photostationary states, despite proceeding via a triplet instead of a singlet excited state of the molecular motor.
Journal ArticleDOI
Design of Responsive and Active (Soft) Materials Using Liquid Crystals.
Emre Bukusoglu,Marco A. Bedolla Pantoja,Peter C. Mushenheim,Xiaoguang Wang,Nicholas L. Abbott +4 more
TL;DR: Recent advances in colloidal and interfacial phenomena involving LCs are described that are enabling the design of new classes of soft matter that respond to stimuli as broad as light, airborne pollutants, bacterial toxins in water, mechanical interactions with living cells, molecular chirality, and more.
Journal ArticleDOI
Photoswitchable catalysis based on the isomerisation of double bonds
Ruth Dorel,Ben L. Feringa +1 more
TL;DR: This Feature Article summarises the key developments accomplished over the past years through the incorporation of photoswitchable double bonds into the structure of catalytically competent molecules and shows some perspectives on the remaining challenges and possibilities arising from this, yet still somehow immature, exciting area of research.
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.
Journal ArticleDOI
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.