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Calixarenes as High Temperature Matrices for Thermally Activated Delayed Fluorescence: C70 in Dihomooxacalix[4]arene.
- Source :
- Molecules; Mar2018, Vol. 23 Issue 3, p558, 8p, 1 Diagram, 3 Charts, 5 Graphs
- Publication Year :
- 2018
-
Abstract
- Thermally activated delayed fluorescence (TADF) of <superscript>12</superscript>C<subscript>70</subscript> and <superscript>13</superscript>C<subscript>70</subscript> was observed up to 140 °C in a p-tert-butyldihomooxacalix[4]arene solid matrix, a temperature range significantly higher than that of previous TADF quantitative studies. An effective singlet-triplet energy gap of 29 kJ/mol and triplet formation quantum yields of 0.97 and 0.99 were measured for <superscript>12</superscript>C<subscript>70</subscript> and <superscript>13</superscript>C<subscript>70</subscript>, respectively. The photophysical properties of the two fullerenes in this new matrix are comparable to those obtained in polystyrene at a lower temperature range. Calixarenes are proposed to be suitable matrices for high temperature TADF studies and applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14203049
- Volume :
- 23
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Molecules
- Publication Type :
- Academic Journal
- Accession number :
- 132397254
- Full Text :
- https://doi.org/10.3390/molecules23030558