Picture of neon light reading 'Open'

Discover open research at Strathprints as part of International Open Access Week!

23-29 October 2017 is International Open Access Week. The Strathprints institutional repository is a digital archive of Open Access research outputs, all produced by University of Strathclyde researchers.

Explore recent world leading Open Access research content this Open Access Week from across Strathclyde's many research active faculties: Engineering, Science, Humanities, Arts & Social Sciences and Strathclyde Business School.

Explore all Strathclyde Open Access research outputs...

Effect of interchain separation on the photoinduced absorption spectra of polycarbazolyldiacetylenes

Comoretto, Davide and Moggio, Ivana and Dell'Erba, C. and Cuniberti, C. and Dellepiane, Giovanna and Rossi, Laura and Giardini, Mario Ettore and Borghesi, Alessandro (1996) Effect of interchain separation on the photoinduced absorption spectra of polycarbazolyldiacetylenes. Physical Review B, 54. pp. 16357-16360. ISSN 1098-0121

[img]
Preview
PDF
Published.pdf - Final Published Version

Download (74kB) | Preview

Abstract

The photoinduced absorption spectra of a novel polycarbazolyldiacetylene with long aliphatic chains on the carbazolyl side groups are measured and compared with those of the unsubstituted polyDCHD. The two polymers in the blue form exhibit very similar electronic absorption spectra and Raman frequencies. This fact indicates that the conjugation length of the polydiacetylene backbone is not too affected by the long substituents. In contrast, the near steady-state photoinduced absorption spectra show that different photogeneration mechanisms are involved in the two polymers. This result can be ascribed to the role played by the interchain distance in the dynamics of the relaxation processes in polydiacetylenes.