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Femtosecond charge transfer in assemblies of discotic liquid crystals

de Jong, Michel P.; Osikowicz, Wojciech; Ristinmaa Sörensen, Stacey LU ; Sergeyev, Sergey; Geerts, Yves H. and Salaneck, William R. (2008) In Journal of Physical Chemistry C 112(40). p.15784-15790
Abstract
The electronic coupling strength within columns of discotic liquid crystals is investigated using core-level Coexisting well-ordered and disordered regions are identified in thin films of tetra-alkoxy-substituted phthalocyanines with the aid of near edge X-ray absorption fine structure and photoelectron spectroscopies. These different regions Lire used to derive a lower limit for the intermolecular charge transfer bandwidth within the framework of the core-hole clock principle. We find average charge transfer times on the order of a few femtoseconds, that is, significantly faster than the C(1s) core-hole lifetime, which indicates a surprisingly strong electronic coupling between the phthalocyanine units as compared to what is expected from... (More)
The electronic coupling strength within columns of discotic liquid crystals is investigated using core-level Coexisting well-ordered and disordered regions are identified in thin films of tetra-alkoxy-substituted phthalocyanines with the aid of near edge X-ray absorption fine structure and photoelectron spectroscopies. These different regions Lire used to derive a lower limit for the intermolecular charge transfer bandwidth within the framework of the core-hole clock principle. We find average charge transfer times on the order of a few femtoseconds, that is, significantly faster than the C(1s) core-hole lifetime, which indicates a surprisingly strong electronic coupling between the phthalocyanine units as compared to what is expected from the charge transport characteristics of this material. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry C
volume
112
issue
40
pages
15784 - 15790
publisher
The American Chemical Society
external identifiers
  • wos:000259760100027
  • scopus:54849441336
ISSN
1932-7447
DOI
10.1021/jp8037494
language
English
LU publication?
yes
id
65af0f6f-63c5-4a8f-a07e-c64d7922b39c (old id 1285772)
date added to LUP
2009-02-06 09:21:26
date last changed
2017-01-01 04:39:06
@article{65af0f6f-63c5-4a8f-a07e-c64d7922b39c,
  abstract     = {The electronic coupling strength within columns of discotic liquid crystals is investigated using core-level Coexisting well-ordered and disordered regions are identified in thin films of tetra-alkoxy-substituted phthalocyanines with the aid of near edge X-ray absorption fine structure and photoelectron spectroscopies. These different regions Lire used to derive a lower limit for the intermolecular charge transfer bandwidth within the framework of the core-hole clock principle. We find average charge transfer times on the order of a few femtoseconds, that is, significantly faster than the C(1s) core-hole lifetime, which indicates a surprisingly strong electronic coupling between the phthalocyanine units as compared to what is expected from the charge transport characteristics of this material.},
  author       = {de Jong, Michel P. and Osikowicz, Wojciech and Ristinmaa Sörensen, Stacey and Sergeyev, Sergey and Geerts, Yves H. and Salaneck, William R.},
  issn         = {1932-7447},
  language     = {eng},
  number       = {40},
  pages        = {15784--15790},
  publisher    = {The American Chemical Society},
  series       = {Journal of Physical Chemistry C},
  title        = {Femtosecond charge transfer in assemblies of discotic liquid crystals},
  url          = {http://dx.doi.org/10.1021/jp8037494},
  volume       = {112},
  year         = {2008},
}