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
Advances in Quantum Mechanochemistry: Electronic Structure Methods and Force Analysis
Tim Stauch,Andreas Dreuw +1 more
TL;DR: This review puts special emphasis on quantum chemical force analysis tools, which can be used to identify the mechanochemically relevant degrees of freedom in a deformed molecule, and spotlight selected applications of quantum mechanochemical methods to point out their synergistic relationship with experiments.
Journal ArticleDOI
Conformational photoswitching of a synthetic peptide foldamer bound within a phospholipid bilayer
TL;DR: The design, synthesis, and conformational behavior of photoresponsive foldamers bound in a phospholipid bilayer akin to a biological membrane phase are reported, pointing the way toward development of small-molecule–based switches in membrane environments.
Journal ArticleDOI
Physical stimuli-responsive vesicles in drug delivery: Beyond liposomes and polymersomes.
TL;DR: A focus of this review is the distinct behaviors observed for these classes of vesicles when exposed to physical stimuli and the resulting potential for new types of drug delivery, with a special emphasis on current challenges and opportunities.
Journal ArticleDOI
Light-Switchable Azobenzene-Containing Macromolecules: From UV to Near Infrared.
Philipp Weis,Si Wu +1 more
TL;DR: The strategies for constructing visible and near-infrared (NIR) light-responsive azo-macromolecules are reviewed, and the potential applications of visible- and NIR-light-responsiveAzo-Macromolecule in biomedicine and solar energy conversion are highlighted.
Journal ArticleDOI
Reversible chromism of spiropyran in the cavity of a flexible coordination cage.
Dipak Samanta,Daria Galaktionova,Julius Gemen,Linda J. W. Shimon,Yael Diskin-Posner,Liat Avram,Petr Král,Rafal Klajn +7 more
TL;DR: It is shown that a flexible coordination cage can adapt its shape to guide the photoisomerization of encapsulated spiropyrans, rendering them reversibly photochromic even within the confines of the cavity.
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.