Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 53, Issue 31, Pages 8231-8235Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201404867
Keywords
boron; ESIPT; fluorescence; hydrogen bonds; pi conjugation
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Funding
- JST, CREST
- Grants-in-Aid for Scientific Research [24109007, 24750015] Funding Source: KAKEN
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An amine-embedded flexible alkyl strap has been incorporated into an emissive boryl-substituted dithienylpyrrole skeleton as a new entity of excited-state intramolecular proton transfer (ESIPT) chromophores. The pi-electron system shows a dual emission, which covers a wide range of the visible region depending on the solvent polarity. The incorporation of the aminoalkyl strap as well as the terminal boryl groups efficiently stabilize the zwitterionic excited-state species resulting from the ESIPT even in an aqueous medium.
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