Exciton transfer and dephasing in polysilanes at low temperature

J. R.G. Thorne; A. Tilgner; Y. R. Kim; J. M. Zeigler; H. P. Trommsdorff; R. M. Hochstrasser

doi:10.1016/0022-2313(92)90131-R

Exciton transfer and dephasing in polysilanes at low temperature

J. R.G. Thorne, A. Tilgner, Y. R. Kim, J. M. Zeigler, H. P. Trommsdorff, R. M. Hochstrasser

Department of Chemistry

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2 Citations (Scopus)

Abstract

We report on time-correlated single photon counting studies of the sigma conjugated polysilane, poly(di-n-hexylsilane), at 2 K. The emission processes of Raman and dephased flourescence are distinguished. It is shown that the risetime of flourescence and the decay time of the Raman polarization are similar and that energy transfer occurs on a tens of picosecond timescale. Simultaneous depolarization of the emission suggests energy transfer along a twisted chain. The energy transfer time is several times longer than the (T₁) dephasing time derived from hole burning studies of the polymer.

Original language	English
Pages (from-to)	170-174
Number of pages	5
Journal	Journal of Luminescence
Volume	53
Issue number	1-6
DOIs	https://doi.org/10.1016/0022-2313(92)90131-R
Publication status	Published - 1992 Jul

Bibliographical note

Funding Information:
This research was supported by NSF-DMR. RMH and HPT are grateful for a NATO grant.

All Science Journal Classification (ASJC) codes

Biophysics
Biochemistry
Chemistry(all)
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/0022-2313(92)90131-R

Cite this

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title = "Exciton transfer and dephasing in polysilanes at low temperature",

abstract = "We report on time-correlated single photon counting studies of the sigma conjugated polysilane, poly(di-n-hexylsilane), at 2 K. The emission processes of Raman and dephased flourescence are distinguished. It is shown that the risetime of flourescence and the decay time of the Raman polarization are similar and that energy transfer occurs on a tens of picosecond timescale. Simultaneous depolarization of the emission suggests energy transfer along a twisted chain. The energy transfer time is several times longer than the (T1) dephasing time derived from hole burning studies of the polymer.",

author = "Thorne, {J. R.G.} and A. Tilgner and Kim, {Y. R.} and Zeigler, {J. M.} and Trommsdorff, {H. P.} and Hochstrasser, {R. M.}",

note = "Funding Information: This research was supported by NSF-DMR. RMH and HPT are grateful for a NATO grant.",

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doi = "10.1016/0022-2313(92)90131-R",

language = "English",

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T1 - Exciton transfer and dephasing in polysilanes at low temperature

AU - Thorne, J. R.G.

AU - Tilgner, A.

AU - Kim, Y. R.

AU - Zeigler, J. M.

AU - Trommsdorff, H. P.

AU - Hochstrasser, R. M.

N1 - Funding Information: This research was supported by NSF-DMR. RMH and HPT are grateful for a NATO grant.

PY - 1992/7

Y1 - 1992/7

N2 - We report on time-correlated single photon counting studies of the sigma conjugated polysilane, poly(di-n-hexylsilane), at 2 K. The emission processes of Raman and dephased flourescence are distinguished. It is shown that the risetime of flourescence and the decay time of the Raman polarization are similar and that energy transfer occurs on a tens of picosecond timescale. Simultaneous depolarization of the emission suggests energy transfer along a twisted chain. The energy transfer time is several times longer than the (T1) dephasing time derived from hole burning studies of the polymer.

AB - We report on time-correlated single photon counting studies of the sigma conjugated polysilane, poly(di-n-hexylsilane), at 2 K. The emission processes of Raman and dephased flourescence are distinguished. It is shown that the risetime of flourescence and the decay time of the Raman polarization are similar and that energy transfer occurs on a tens of picosecond timescale. Simultaneous depolarization of the emission suggests energy transfer along a twisted chain. The energy transfer time is several times longer than the (T1) dephasing time derived from hole burning studies of the polymer.

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EP - 174

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JF - Journal of Luminescence

IS - 1-6

ER -

Exciton transfer and dephasing in polysilanes at low temperature

Abstract

Bibliographical note

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