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
Photoresponsive molecular tools for emerging applications of light in medicine.
Ilse M. Welleman,Ilse M. Welleman,Mark W. H. Hoorens,Mark W. H. Hoorens,Ben L. Feringa,Hendrikus H. Boersma,Wiktor Szymanski,Wiktor Szymanski +7 more
TL;DR: This work describes the applications scenarios that can be envisioned in clinical practice and uses those scenarios to explain the necessary properties that the photoresponsive tools used to control biological function should possess, highlighted by examples from medical imaging, drug delivery and photopharmacology.
Journal ArticleDOI
Light-Controlled Histone Deacetylase (HDAC) Inhibitors: Towards Photopharmacological Chemotherapy
Wiktor Szymanski,Wiktor Szymanski,Maria E. Ourailidou,Willem A. Velema,Frank J. Dekker,Ben L. Feringa +5 more
TL;DR: The development of photoswitchable histone deacetylase (HDAC) inhibitors as potential antitumor agents is reported herein and offers a clear prospect towards local photoactivation of HDAC inhibition to avoid severe side effects in chemotherapy.
Journal ArticleDOI
Fluorescent Photochromic α‐Cyanodiarylethene Molecular Switches: An Emerging and Promising Class of Functional Diarylethene
Journal ArticleDOI
Spanning the Solar Spectrum: Azopolymer Solar Thermal Fuels for Simultaneous UV and Visible Light Storage
Journal ArticleDOI
Controlling Dark Equilibria and Enhancing Donor-Acceptor Stenhouse Adduct Photoswitching Properties through Carbon Acid Design.
James R. Hemmer,Zachariah A. Page,Kyle D. Clark,Friedrich Stricker,Neil D. Dolinski,Craig J. Hawker,Javier Read de Alaniz +6 more
TL;DR: A novel library of tunable negative photochromic compounds, donor-acceptor Stenhouse adducts (DASAs), is reported after tailoring the electron deficient "acceptor" moiety yielded DASAs that can be activated with mild visible and far red light.
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.