Publication detail

Photochromic properties of spiropyranes in polymeric pi-conjugated matrices

VALA, M. WEITER, M. RAJTROVÁ, G. NEŠPŮREK, S. ZMEŠKAL, O.

Original Title

Type

conference paper

Language

English

Original Abstract

The contribution reports on results of studies of the photochromic reaction of 6-nitro-1',3',3'-trimethylspiro[2H-1-benzopyran-2,2'-indoline] (SP) in pi-conjugated photoconductive polymer matrices based on poly(p-phenylene vinylene) derivatives. The polymer matrix strongly influences the reaction rate, lifetime of coloured species and the value and distribution of activation energies of the bleaching process. It was found that the photochromic reaction is strongly influenced by energy transfer processes between the conjugated chain and photochromic additive as follows from changes of photoluminescence spectra during the photochromic reaction. The energy transfer also influences the degradation processes and efficiency of fluorescence switching. These observations are supported by quantum chemical calculations.

Keywords

photochromism, spiropyran, conjugated polymers, molecullar electronics, molecullar switch

Authors

VALA, M.; WEITER, M.; RAJTROVÁ, G.; NEŠPŮREK, S.; ZMEŠKAL, O.

Released

10. 7. 2005

Location

Cargese, France

BibTex

@inproceedings{BUT16229,
  author="Martin {Vala} and Martin {Weiter} and Gabriela {Rajtrová} and Stanislav {Nešpůrek} and Oldřich {Zmeškal}",
  title="Photochromic properties of spiropyranes in polymeric pi-conjugated matrices",
  year="2005",
  address="Cargese, France"
}