Pentaphenylborole-2,6-Lutidine Adduct: A System with Unusual Thermochromic and Photochromic Properties

Pentaphenylborole-2,6-Lutidine Adduct: A System with Unusual Thermochromic and Photochromic Properties

Changing color: The pentaphenylborole–2,6‐lutidine adduct 1 has unusual photophysical properties. Cooling a solution of 1 results in the disappearance of the absorption band at 578 nm and a color change from blue to yellow. Irradiation of 1 at low temperatures leads to a migration of lutidine from b...

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Veröffentlicht in:Angewandte Chemie (International ed.) 2011-03, Vol.50 (12), p.2833-2836
Hauptverfasser: Ansorg, Kay, Braunschweig, Holger, Chiu, Ching-Wen, Engels, Bernd, Gamon, Daniela, Hügel, Markus, Kupfer, Thomas, Radacki, Krzysztof
Format: Artikel
Sprache:eng
Schlagworte:
boroles
boron
photochromism
rearrangements
thermochromism
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Zusammenfassung:Changing color: The pentaphenylborole–2,6‐lutidine adduct 1 has unusual photophysical properties. Cooling a solution of 1 results in the disappearance of the absorption band at 578 nm and a color change from blue to yellow. Irradiation of 1 at low temperatures leads to a migration of lutidine from boron to the adjacent carbon with BC bond formation and a color change to green.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201006234