Fate of Excitations in Conjugated Polymers: Single-Molecule Spectroscopy Reveals Nonemissive "Dark" Regions in MEH-PPV Individual Chains.

Hongzhen Lin; Yuxi Tian; Karolina Zapadka; Gustav Persson; Daniel Thomsson; Oleg Mirzov; Per-Olof Larsson; Jerker Widengren; Ivan Scheblykin

doi:10.1021/nl9027473

Fate of Excitations in Conjugated Polymers: Single-Molecule Spectroscopy Reveals Nonemissive "Dark" Regions in MEH-PPV Individual Chains.

Hongzhen Lin, Yuxi Tian, Karolina Zapadka, Gustav Persson, Daniel Thomsson, Oleg Mirzov, Per-Olof Larsson, Jerker Widengren, Ivan Scheblykin

Research output: Contribution to journal › Article › peer-review

Abstract

Single chains of the conjugated polymer MEH-PPV (poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene)) were studied with wide-field fluorescence microscopy (dispersion in inert polymer matrices) and with fluorescence correlation spectroscopy (chloroform solution). The fluorescence yield of individual molecules in matrices was found to be 1-2 orders of magnitude lower than that in solution and it decreased substantially with increasing chain length. It suggests that isolation of MEH-PPV molecules in polymer matrices creates favorable conditions for photogeneration of nonemissive primary excited states.

Original language	English
Pages (from-to)	4456-4461
Journal	Nano Letters
Volume	9
DOIs	https://doi.org/10.1021/nl9027473
Publication status	Published - 2009

Bibliographical note

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Pure and Applied Biochemistry (LTH) (011001005), Chemical Physics (S) (011001060)

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Nano-technology

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title = "Fate of Excitations in Conjugated Polymers: Single-Molecule Spectroscopy Reveals Nonemissive {"}Dark{"} Regions in MEH-PPV Individual Chains.",

abstract = "Single chains of the conjugated polymer MEH-PPV (poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene)) were studied with wide-field fluorescence microscopy (dispersion in inert polymer matrices) and with fluorescence correlation spectroscopy (chloroform solution). The fluorescence yield of individual molecules in matrices was found to be 1-2 orders of magnitude lower than that in solution and it decreased substantially with increasing chain length. It suggests that isolation of MEH-PPV molecules in polymer matrices creates favorable conditions for photogeneration of nonemissive primary excited states.",

author = "Hongzhen Lin and Yuxi Tian and Karolina Zapadka and Gustav Persson and Daniel Thomsson and Oleg Mirzov and Per-Olof Larsson and Jerker Widengren and Ivan Scheblykin",

note = "The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Pure and Applied Biochemistry (LTH) (011001005), Chemical Physics (S) (011001060)",

year = "2009",

doi = "10.1021/nl9027473",

language = "English",

volume = "9",

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journal = "Nano Letters",

issn = "1530-6992",

publisher = "The American Chemical Society (ACS)",

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TY - JOUR

T1 - Fate of Excitations in Conjugated Polymers: Single-Molecule Spectroscopy Reveals Nonemissive "Dark" Regions in MEH-PPV Individual Chains.

AU - Lin, Hongzhen

AU - Tian, Yuxi

AU - Zapadka, Karolina

AU - Persson, Gustav

AU - Thomsson, Daniel

AU - Mirzov, Oleg

AU - Larsson, Per-Olof

AU - Widengren, Jerker

AU - Scheblykin, Ivan

N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Pure and Applied Biochemistry (LTH) (011001005), Chemical Physics (S) (011001060)

PY - 2009

Y1 - 2009

N2 - Single chains of the conjugated polymer MEH-PPV (poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene)) were studied with wide-field fluorescence microscopy (dispersion in inert polymer matrices) and with fluorescence correlation spectroscopy (chloroform solution). The fluorescence yield of individual molecules in matrices was found to be 1-2 orders of magnitude lower than that in solution and it decreased substantially with increasing chain length. It suggests that isolation of MEH-PPV molecules in polymer matrices creates favorable conditions for photogeneration of nonemissive primary excited states.

AB - Single chains of the conjugated polymer MEH-PPV (poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene)) were studied with wide-field fluorescence microscopy (dispersion in inert polymer matrices) and with fluorescence correlation spectroscopy (chloroform solution). The fluorescence yield of individual molecules in matrices was found to be 1-2 orders of magnitude lower than that in solution and it decreased substantially with increasing chain length. It suggests that isolation of MEH-PPV molecules in polymer matrices creates favorable conditions for photogeneration of nonemissive primary excited states.

U2 - 10.1021/nl9027473

DO - 10.1021/nl9027473

M3 - Article

C2 - 19860455

SN - 1530-6992

VL - 9

SP - 4456

EP - 4461

JO - Nano Letters

JF - Nano Letters

ER -

Fate of Excitations in Conjugated Polymers: Single-Molecule Spectroscopy Reveals Nonemissive "Dark" Regions in MEH-PPV Individual Chains.

Abstract

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