Excimer formation in a new class of terthiophene-based fluorophores covalently bonded to a cyclotetrasiloxane scaffold has been demonstrated and the photophysical process ruling it has been investigated in detail and modeled theoretically. In contrast to the conventional systems in which long-living fluorophores such as pyrene are linked in the same molecule, an excimer is formed only when two terthio-phene-based branches nano-organized on the same cyclotetrasiloxane scaffold are close enough together when excitation takes place. In such a case, excimer formation is extremely efficient, and the new bound excited states are quite stable. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.
Mroz, W., Bombenger, J., Botta, C., Orbelli Biroli, A., Pizzotti, M., De Angelis, F., et al. (2009). Oligothiophenes nano-organized on a cyclotetrasiloxane scaffold as a model of a silica-bound monolayer: Evidence for intramolecular excimer formation. CHEMISTRY-A EUROPEAN JOURNAL, 15(46), 12791-12798 [10.1002/chem.200901307].
Oligothiophenes nano-organized on a cyclotetrasiloxane scaffold as a model of a silica-bound monolayer: Evidence for intramolecular excimer formation
TUBINO, RICCARDO;MEINARDI, FRANCESCO
2009
Abstract
Excimer formation in a new class of terthiophene-based fluorophores covalently bonded to a cyclotetrasiloxane scaffold has been demonstrated and the photophysical process ruling it has been investigated in detail and modeled theoretically. In contrast to the conventional systems in which long-living fluorophores such as pyrene are linked in the same molecule, an excimer is formed only when two terthio-phene-based branches nano-organized on the same cyclotetrasiloxane scaffold are close enough together when excitation takes place. In such a case, excimer formation is extremely efficient, and the new bound excited states are quite stable. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.
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