Effects of chemical modifications on photophysics and exciton dynamics of π-conjugation attenuated and metal-chelated photoconducting polymers

L. X. Chen, W. J H Jäger, D. J. Gosztola, M. P. Niemczyk, Michael R Wasielewski

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Effects of two types of chemical modifications on photoconducting polymers consisting of polyphenylene vinylene (PPV) derivatives are studied by static and ultrafast transient optical spectroscopy as well as semi-empirical ZINDO calculations. The first type of modification inserts 2,2′-bipyridyl-5-vinylene (bpyV) units in the PPV backbone, and the second type involves metal-chelation with the bpy sites. Photoluminescence (PL) and exciton dynamics of polymers 1 and 2 with PV:bpyV ratios of 1 and 3 were examined in solution, and compared with those of the homo-polymer, poly(2,5-bis(2′-ethylhexyloxy)-1,4-phenylene vinylene) (BEH-PPV). Similar studies were carried out for several metal-chelated polymers. These results can be explained by changes in π-conjugation throughout the polymer backbone. The attenuation in π-conjugation by the chemical modifications transforms a conducting polymer from one-dimensional semiconductor to molecular aggregates.

Original languageEnglish
Pages (from-to)229-234
Number of pages6
JournalSynthetic Metals
Volume116
Issue number1-3
DOIs
Publication statusPublished - Jan 1 2001

Fingerprint

Polyphenylene vinylene
Chemical modification
conjugation
Excitons
Polymers
Metals
excitons
polymers
2,2'-Dipyridyl
metals
chelation
Conducting polymers
conducting polymers
inserts
Chelation
Photoluminescence
attenuation
LDS 751
Semiconductor materials
Derivatives

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Effects of chemical modifications on photophysics and exciton dynamics of π-conjugation attenuated and metal-chelated photoconducting polymers. / Chen, L. X.; Jäger, W. J H; Gosztola, D. J.; Niemczyk, M. P.; Wasielewski, Michael R.

In: Synthetic Metals, Vol. 116, No. 1-3, 01.01.2001, p. 229-234.

Research output: Contribution to journalArticle

@article{51035956795d47eb88cb93da683ab56f,
title = "Effects of chemical modifications on photophysics and exciton dynamics of π-conjugation attenuated and metal-chelated photoconducting polymers",
abstract = "Effects of two types of chemical modifications on photoconducting polymers consisting of polyphenylene vinylene (PPV) derivatives are studied by static and ultrafast transient optical spectroscopy as well as semi-empirical ZINDO calculations. The first type of modification inserts 2,2′-bipyridyl-5-vinylene (bpyV) units in the PPV backbone, and the second type involves metal-chelation with the bpy sites. Photoluminescence (PL) and exciton dynamics of polymers 1 and 2 with PV:bpyV ratios of 1 and 3 were examined in solution, and compared with those of the homo-polymer, poly(2,5-bis(2′-ethylhexyloxy)-1,4-phenylene vinylene) (BEH-PPV). Similar studies were carried out for several metal-chelated polymers. These results can be explained by changes in π-conjugation throughout the polymer backbone. The attenuation in π-conjugation by the chemical modifications transforms a conducting polymer from one-dimensional semiconductor to molecular aggregates.",
author = "Chen, {L. X.} and J{\"a}ger, {W. J H} and Gosztola, {D. J.} and Niemczyk, {M. P.} and Wasielewski, {Michael R}",
year = "2001",
month = "1",
day = "1",
doi = "10.1016/S0379-6779(00)00458-6",
language = "English",
volume = "116",
pages = "229--234",
journal = "Synthetic Metals",
issn = "0379-6779",
publisher = "Elsevier BV",
number = "1-3",

}

TY - JOUR

T1 - Effects of chemical modifications on photophysics and exciton dynamics of π-conjugation attenuated and metal-chelated photoconducting polymers

AU - Chen, L. X.

AU - Jäger, W. J H

AU - Gosztola, D. J.

AU - Niemczyk, M. P.

AU - Wasielewski, Michael R

PY - 2001/1/1

Y1 - 2001/1/1

N2 - Effects of two types of chemical modifications on photoconducting polymers consisting of polyphenylene vinylene (PPV) derivatives are studied by static and ultrafast transient optical spectroscopy as well as semi-empirical ZINDO calculations. The first type of modification inserts 2,2′-bipyridyl-5-vinylene (bpyV) units in the PPV backbone, and the second type involves metal-chelation with the bpy sites. Photoluminescence (PL) and exciton dynamics of polymers 1 and 2 with PV:bpyV ratios of 1 and 3 were examined in solution, and compared with those of the homo-polymer, poly(2,5-bis(2′-ethylhexyloxy)-1,4-phenylene vinylene) (BEH-PPV). Similar studies were carried out for several metal-chelated polymers. These results can be explained by changes in π-conjugation throughout the polymer backbone. The attenuation in π-conjugation by the chemical modifications transforms a conducting polymer from one-dimensional semiconductor to molecular aggregates.

AB - Effects of two types of chemical modifications on photoconducting polymers consisting of polyphenylene vinylene (PPV) derivatives are studied by static and ultrafast transient optical spectroscopy as well as semi-empirical ZINDO calculations. The first type of modification inserts 2,2′-bipyridyl-5-vinylene (bpyV) units in the PPV backbone, and the second type involves metal-chelation with the bpy sites. Photoluminescence (PL) and exciton dynamics of polymers 1 and 2 with PV:bpyV ratios of 1 and 3 were examined in solution, and compared with those of the homo-polymer, poly(2,5-bis(2′-ethylhexyloxy)-1,4-phenylene vinylene) (BEH-PPV). Similar studies were carried out for several metal-chelated polymers. These results can be explained by changes in π-conjugation throughout the polymer backbone. The attenuation in π-conjugation by the chemical modifications transforms a conducting polymer from one-dimensional semiconductor to molecular aggregates.

UR - http://www.scopus.com/inward/record.url?scp=0342467810&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0342467810&partnerID=8YFLogxK

U2 - 10.1016/S0379-6779(00)00458-6

DO - 10.1016/S0379-6779(00)00458-6

M3 - Article

AN - SCOPUS:0342467810

VL - 116

SP - 229

EP - 234

JO - Synthetic Metals

JF - Synthetic Metals

SN - 0379-6779

IS - 1-3

ER -