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 activated non-reciprocal motion in liquid crystalline networks by designed microactuator architecture
Daniele Martella,Daniele Martella,Diego Antonioli,Sara Nocentini,Diederik S. Wiersma,Giancarlo Galli,Michele Laus,Camilla Parmeggiani +7 more
TL;DR: In this article, light responsive liquid crystalline networks were prepared by photopolymerization of azobenzene-doped mesogen mixtures and applied for production of micro-actuators by a laser writing technique.
Journal ArticleDOI
A supramolecular approach to construct a hydrolase mimic with photo-switchable catalytic activity
TL;DR: In this paper, a peptide-based artificial hydrolase with photo-switchable activity was fabricated by the introduction of a catalytic histidine residue and a photo-responsive azobenzene group into the peptide chain.
Journal ArticleDOI
Light-Powered Dissipative Assembly of Diazocine Coordination Cages
TL;DR: This work reports the first Pd-mediated coordination cage based on ligands embedding a diazocine photoswitch, characterized by a combination of NMR, ion mobility ESI-MS, single-crystal X-ray diffraction, and UV–vis absorption studies.
Journal ArticleDOI
Light-responsive azobenzene-based glycopolymer micelles for targeted drug delivery to melanoma cells
Samuel Pearson,Dylan Vitucci,Yee Yee Khine,Aydan Dag,Aydan Dag,Hongxu Lu,Maud Save,Laurent Billon,Martina H. Stenzel +8 more
TL;DR: Light-responsive glycopolymer micelles were produced by the self-assembly of amphiphilic block copolymers containing azobenzene and β-galactose units, demonstrating their suitability as a potential drug delivery system for melanoma.
Journal ArticleDOI
Stepwise control of host-guest interaction using a coordination polymer gel.
TL;DR: The thermodynamic benefits of a system in equilibrium are exploited to achieve controlled stepwise release and capture of cyclodextrin (guest) using a coordination polymer (Mg-CP) as the host and temperature as the stimulus.
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.