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Inhomogeneous Quenching as a Limit of the Correlation Between Fluorescence Polarization and Conformation of Single Molecules

Camacho Dejay, Rafael LU ; Thomsson, Daniel LU ; Sforazzini, Giuseppe ; Anderson, Harry L. and Scheblykin, Ivan LU orcid (2013) In The Journal of Physical Chemistry Letters 4(6). p.1053-1058
Abstract
The photophysical properties of conjugated polymers (CPs) largely depend on the interactions between the CP and its environment. We present a study of two polymers with identical conjugated backbones, bare and insulated, that showed different fluorescence excitation modulation depth histograms. However, the polarization differences are not related to differences in conformation, as commonly believed, but to the existence of "dark" chromophores in the bare polymer that are statically quenched. This results in inhomogeneous quenching of the polymer chain that breaks the correlation between excitation fluorescence polarization and conjugated polymer chain conformation.
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
The Journal of Physical Chemistry Letters
volume
4
issue
6
pages
1053 - 1058
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000316772900035
  • scopus:84875543623
  • pmid:26291377
ISSN
1948-7185
DOI
10.1021/jz400142x
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
id
e790292a-e1dc-4e4f-8485-88a5e6ef4f70 (old id 3749123)
date added to LUP
2016-04-01 13:33:47
date last changed
2023-09-03 01:32:42
@article{e790292a-e1dc-4e4f-8485-88a5e6ef4f70,
  abstract     = {{The photophysical properties of conjugated polymers (CPs) largely depend on the interactions between the CP and its environment. We present a study of two polymers with identical conjugated backbones, bare and insulated, that showed different fluorescence excitation modulation depth histograms. However, the polarization differences are not related to differences in conformation, as commonly believed, but to the existence of "dark" chromophores in the bare polymer that are statically quenched. This results in inhomogeneous quenching of the polymer chain that breaks the correlation between excitation fluorescence polarization and conjugated polymer chain conformation.}},
  author       = {{Camacho Dejay, Rafael and Thomsson, Daniel and Sforazzini, Giuseppe and Anderson, Harry L. and Scheblykin, Ivan}},
  issn         = {{1948-7185}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{1053--1058}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{The Journal of Physical Chemistry Letters}},
  title        = {{Inhomogeneous Quenching as a Limit of the Correlation Between Fluorescence Polarization and Conformation of Single Molecules}},
  url          = {{http://dx.doi.org/10.1021/jz400142x}},
  doi          = {{10.1021/jz400142x}},
  volume       = {{4}},
  year         = {{2013}},
}