Polarizabilities Inside Molecular Containers
A polarizability close to the gas phase is measured inside the cavity of the molecular container cucurbit[7]uril (CB7) by employing 2,3‐ diazabicyclo[2.2.2]oct‐2‐ene (DBO) as a solvatochromic guest (CB7⋅DBO). Conversely, the previously studied photophysical properties of biacetyl as a guest in a hem...
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Published in | Angewandte Chemie (International ed.) Vol. 40; no. 23; pp. 4387 - 4390 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Weinheim
WILEY-VCH Verlag GmbH
03.12.2001
WILEY‐VCH Verlag GmbH |
Subjects | |
Online Access | Get full text |
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Summary: | A polarizability close to the gas phase is measured inside the cavity of the molecular container cucurbit[7]uril (CB7) by employing 2,3‐ diazabicyclo[2.2.2]oct‐2‐ene (DBO) as a solvatochromic guest (CB7⋅DBO). Conversely, the previously studied photophysical properties of biacetyl as a guest in a hemicarcerand (HC⋅biacetyl) indicate an exceptionally high polarizability inside this host cavity. These conclusions can be drawn from the solvatochromism of DBO and biacetyl in different solvents and the gas phase, which reveals correlations with the bulk polarizability. The oscillator strength, that is, the integrated absorption intensity, of the novel probes is not sensitive to the solvent polarity, but responds strongly to the solvent polarizability. |
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Bibliography: | istex:F23A2DC07E0DD2747F45034BF6F6166AC30439D8 ark:/67375/WNG-ZG01BGCC-J ArticleID:ANIE4387 This work was supported by the Swiss National Science Foundation (projects 620‐58000.99 and 4047‐057552) within the program NFP 47 “Supramolecular Functional Materials”. |
ISSN: | 1433-7851 1521-3773 |
DOI: | 10.1002/1521-3773(20011203)40:23<4387::AID-ANIE4387>3.0.CO;2-H |