Improvement in Photocyclization Efficiency of Diaryl Ethenes by Adjusting the Pore Size of Mesoporous Silica

Improvement in Photocyclization Efficiency of Diaryl Ethenes by Adjusting the Pore Size of Mesoporous Silica

Photochromism in nanospace: Reversible photochromic reaction of a diaryl ethene (DE) takes place in the pores of MCM‐41s modified with organic groups. The efficiency of the photocyclization reaction increases fourfold when the diameter of the pore is decreased to approximately the same size of the D...

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Veröffentlicht in:Angewandte Chemie International Edition 2005-11, Vol.44 (44), p.7233-7236
Hauptverfasser: Okada, Haruki, Nakajima, Nozomi, Tanaka, Toshihiro, Iwamoto, Masakazu
Format: Artikel
Sprache:eng
Schlagworte:
alkenes
isomerization
mesoporous materials
nanostructures
photochemistry
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Zusammenfassung:Photochromism in nanospace: Reversible photochromic reaction of a diaryl ethene (DE) takes place in the pores of MCM‐41s modified with organic groups. The efficiency of the photocyclization reaction increases fourfold when the diameter of the pore is decreased to approximately the same size of the DE, which indicates that the conformation of the open‐ring isomer is regulated in the confines of the pore (see picture).
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200501992