The synthesis of a new fullerene - dithienylbenzo[c]thiophene (DTBT) - fullerene triad has been reported. The synthetic scheme provides the synthesis of DTBT unit, a Sonogashira reaction to introduce two acetylenic groups and the coupling with fullerene. The product showed an absorption at 485 rim and a fluorescence band at 575 nm. Treatment of 5-(3-(5-ethynyl-2-thienyl)benzo[c]-1-thienyl)thiophene-2-carbaldehyde with LHDMS gave a dimeric product that showed an absorption at 475 nm and a fluorescence band at 595 nm. Furthermore, 5-(3-(2-thienyl)benzo[c]-1-thienyl)thiophene-2-carbaldehyde was treated with hydrazine to give the corresponding adduct that showed an absorption at 480 nm and a fluorescence band at 605 rim.
SYNTHESIS AND PHOTOPHYSICAL PROPERTIES OF SOME DITHIENYLBENZO[c]THIOPHENE DERIVATIVES
Guarnaccio Ambra;Santagata Antonio;
2015
Abstract
The synthesis of a new fullerene - dithienylbenzo[c]thiophene (DTBT) - fullerene triad has been reported. The synthetic scheme provides the synthesis of DTBT unit, a Sonogashira reaction to introduce two acetylenic groups and the coupling with fullerene. The product showed an absorption at 485 rim and a fluorescence band at 575 nm. Treatment of 5-(3-(5-ethynyl-2-thienyl)benzo[c]-1-thienyl)thiophene-2-carbaldehyde with LHDMS gave a dimeric product that showed an absorption at 475 nm and a fluorescence band at 595 nm. Furthermore, 5-(3-(2-thienyl)benzo[c]-1-thienyl)thiophene-2-carbaldehyde was treated with hydrazine to give the corresponding adduct that showed an absorption at 480 nm and a fluorescence band at 605 rim.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
