Light-operated mechanized nanoparticles

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Light-operated mechanized nanoparticles

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Title: Light-operated mechanized nanoparticles
Author: Ferris, Daniel P.; Zhao, Yanli; Khashab, Niveen M.; Khatib, Hussam A.; Stoddart, J. Fraser; Zink, Jeffrey I.
Copyright year: 2009
Abstract: Mesoporous silica (MCM-41) nanoparticles modified by azobenzene derivatives, capable of storing small molecules and releasing them following light irradiation, have been fabricated and characterized. In the presence of the β-cyclodextrin and/or pyrene-modified β-cyclodextrin rings, the β-cyclodextrin and/or pyrene-modified β-cyclodextrin rings will thread onto the azobenzene-containing stalks and bind to trans-azobenzene units to form the pseudorotaxanes, thus sealing the nanopores and stopping release of the cargo. Upon irradiation, the isomerization of trans-to-cis azobenzene units leads to the dissociation of the β-cyclodextrin and/or pyrene-modified β-cyclodextrin rings from the stalks, thus opening the gates to the nanopores and releasing the cargo.
Subject: DRNTU::Science::Biological sciences::Biochemistry.
Type: Journal Article
Series/ Journal Title: Journal of the American chemical society
School: School of Physical and Mathematical Sciences
Rights: © 2009 American Chemical Society

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