0309257 - ÚACH 2009 RIV DE eng J - Journal Article
Nováková, V. - Zimčík, P. - Kopecký, K. - Miletín, M. - Kuneš, J. - Lang, Kamil
Self-assembled azaphthalocyanine dimers with higher fluorescence and singlet oxygen quantum yields than the corresponding monomers.
[Azaftalocyaninové dimery s vyššími fluorescenčními kvantovými výtěžky a výtěžky singletového kyslíku než odpovídající monomery.]
European Journal of Organic Chemistry. N, č. 19 (2008), s. 3260-3263. ISSN 1434-193X. E-ISSN 1099-0690
Institutional research plan: CEZ:AV0Z40320502
Keywords : aggregation * electron transfer * fluorescence
Subject RIV: CA - Inorganic Chemistry
Impact factor: 3.016, year: 2008

In this work, we describe diethylamino-substituted metalazaphthalocyanines that form self-assembled J-dimers in noncoordinating solvents. The dimers are formed by the coordination of the free electron pair of one diethylamino group with the central metal of the adjacent molecule. The addition of pyridine leads to monomerization and considerable quenching of fluorescence and singlet oxygen formation as a result of intramolecular photoinduced singlet electron transfer (PET). PET is efficiently inhibited in dimers; therefore, dimers have higher fluorescence and singlet oxygen quantum yields than the corresponding monomers.

Popisujeme vlastnosti azaftalocyaninových J-dimerů v nekoordinujících rozpouštědlech.
Permanent Link: http://hdl.handle.net/11104/0161447