Dithiafulvenyl-Extended N-Heterotriangulenes and Their Interaction with C60 : Cooperative Fluorescence.
Chemistry
; 23(50): 12353-12362, 2017 Sep 07.
Article
em En
| MEDLINE
| ID: mdl-28574611
ABSTRACT
We describe the synthesis as well as the electronic and photophysical characterization of novel N-heterotriangulene derivatives decorated with methoxycarbonyl- and methyl-sulfanyl-substituted dithiafulvenyl moieties. The association of these electron-rich compounds with fullerene C60 as electron acceptor was investigated by means of photophysical, voltammetric, and mass spectrometric methods and rationalized by DFT calculations. Importantly, light-induced interactions between the dithiafulvene-substituted N-heterotriangulene bearing methoxycarbonyl substituents with C60 leads to cooperative fluorescence. Quantitative Job plot analyses by means of fluorescence spectroscopy and voltammetry confirm a 11 association with binding constants in the order of 104 m-1 . Supportive results for the supramolecular assembly of both N-heterotriangulenes with C60 were obtained by ESI mass spectrometric investigations in the gas phase.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2017
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Article