Luminescence spectral properties of dendritic oligothiophenesilane macromolecules View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2010-01

AUTHORS

N. M. Surin, O. V. Borshchev, Yu. N. Luponosov, S. A. Ponomarenko, A. M. Muzafarov

ABSTRACT

The luminescence spectral properties of oligothiophenesilane dendrite macromolecules were studied. It was found that the chromophores responsible for the formation of the absorption and luminescence spectra were dendrimer fragments separated by silicon atoms; all the chromophores are equally involved in the formation of the absorption spectra of dendritic macromolecules of the zero, first, second, and third generations. It was shown that for dendrites of the first, second, and third generations, the luminescence spectrum is mainly formed by the chromophore fragments lying in the internal layers of the dendritic macromolecule due to the induction resonance energy transfer of electronic excitation from peripheral to internal chromophore fragments. The conclusion was drawn that synthesis of dendritic macromolecules with internal chromophore fragments possessing a high quantum yield of fluorescence can give actively luminescing nanosized objects with the molar extinction coefficient proportional to the number of fragments ɛmax ≈ 106 l/(mol cm). These compounds can find wide application in transducers for converting various types of ionizing radiation into optical radiation in electroluminescent devices. More... »

PAGES

1979-1985

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0036024410110270

DOI

http://dx.doi.org/10.1134/s0036024410110270

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1035042782


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