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Single-molecule linewidths of terrylene in incommensurate biphenyl: Thermocycling and time-resolved experiments

Palm, V.; Pars, M.; Kikas, J.; Nilsson, Mattias LU and Kröll, Stefan LU (2007) In Journal of Luminescence 127(1). p.218-223
Abstract
The purely electronic linewidth delta of terrylene impurity molecules in monocrystalline biphenyl is studied at temperatures T between 1.7 and 3.5 K using the technique of single-molecule spectroscopy (SMS). Based on the data obtained, individual molecules appear to have their own law of delta(T) dependence; further, hysteresis effects have been observed in thermocycling experiments. The single-molecule (SM) lines investigated quickly broaden and vanish at temperatures between 3 and 3.5 K and reappear after the sample is cooled down again. At T approximate to 2 K, a slow process of spectral diffusion (SD) was observed on timescales longer than 10s. To learn about the role of faster SD processes, the technique of intensity time-frequency... (More)
The purely electronic linewidth delta of terrylene impurity molecules in monocrystalline biphenyl is studied at temperatures T between 1.7 and 3.5 K using the technique of single-molecule spectroscopy (SMS). Based on the data obtained, individual molecules appear to have their own law of delta(T) dependence; further, hysteresis effects have been observed in thermocycling experiments. The single-molecule (SM) lines investigated quickly broaden and vanish at temperatures between 3 and 3.5 K and reappear after the sample is cooled down again. At T approximate to 2 K, a slow process of spectral diffusion (SD) was observed on timescales longer than 10s. To learn about the role of faster SD processes, the technique of intensity time-frequency correlation (ITFC) SMS was applied to a stable SM line after it had been broadened by 75% as a result of a thermocycling experiment. At 2 and 2.3 K, no significant line broadening could be revealed on timescales between 0.16 ms and 10s. (C) 2007 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
hysteresis, linewidth temperature, dependence, time-resolved single-molecule spectroscopy, terrylene, incommensurate biphenyl
in
Journal of Luminescence
volume
127
issue
1
pages
218 - 223
publisher
Elsevier
external identifiers
  • wos:000247332000038
  • scopus:34248577746
ISSN
0022-2313
DOI
10.1016/j.jlumin.2007.02.027
language
English
LU publication?
yes
id
2757617e-1727-4d99-8670-ccd5af435164 (old id 648365)
date added to LUP
2007-12-19 11:57:31
date last changed
2017-01-01 07:16:10
@article{2757617e-1727-4d99-8670-ccd5af435164,
  abstract     = {The purely electronic linewidth delta of terrylene impurity molecules in monocrystalline biphenyl is studied at temperatures T between 1.7 and 3.5 K using the technique of single-molecule spectroscopy (SMS). Based on the data obtained, individual molecules appear to have their own law of delta(T) dependence; further, hysteresis effects have been observed in thermocycling experiments. The single-molecule (SM) lines investigated quickly broaden and vanish at temperatures between 3 and 3.5 K and reappear after the sample is cooled down again. At T approximate to 2 K, a slow process of spectral diffusion (SD) was observed on timescales longer than 10s. To learn about the role of faster SD processes, the technique of intensity time-frequency correlation (ITFC) SMS was applied to a stable SM line after it had been broadened by 75% as a result of a thermocycling experiment. At 2 and 2.3 K, no significant line broadening could be revealed on timescales between 0.16 ms and 10s. (C) 2007 Elsevier B.V. All rights reserved.},
  author       = {Palm, V. and Pars, M. and Kikas, J. and Nilsson, Mattias and Kröll, Stefan},
  issn         = {0022-2313},
  keyword      = {hysteresis,linewidth temperature,dependence,time-resolved single-molecule spectroscopy,terrylene,incommensurate biphenyl},
  language     = {eng},
  number       = {1},
  pages        = {218--223},
  publisher    = {Elsevier},
  series       = {Journal of Luminescence},
  title        = {Single-molecule linewidths of terrylene in incommensurate biphenyl: Thermocycling and time-resolved experiments},
  url          = {http://dx.doi.org/10.1016/j.jlumin.2007.02.027},
  volume       = {127},
  year         = {2007},
}