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Installing Dynamic Molecular Photomechanics in Mesopores: A Multifunctional Controlled‐Release Nanosystem
Author(s) -
Zhu Yingchun,
Fujiwara Masahiro
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200604850
Subject(s) - photoisomerization , azobenzene , mesoporous material , molecule , controlled release , chemical engineering , photochromism , materials science , stabilizer (aeronautics) , irradiation , diffusion , photochemistry , chemistry , nanotechnology , isomerization , organic chemistry , catalysis , mechanical engineering , physics , nuclear physics , engineering , thermodynamics
Kicking out cholesterol : The release of guest molecules (cholesterol) included in the pores of mesoporous silica is promoted by simultaneous irradiation with UV and visible light. The reversible cis – trans photoisomerization of azobenzene substituents on the pore surface causes a stirring action, which accelerates the diffusion of the guest from the pores (see picture), thus providing an intelligent controlled‐release method.