Singlet, triplet, electron and hole transport along single polymer chains

Matthew Bird, Gina Mauro, Lori Zaikowski, Xiang Li, Obadiah Reid, Brianne Karten, Sadayuki Asaoka, Hung Cheng Chen, Andrew R. Cook, Gary Rumbles, John R. Miller

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The diffusion of singlet and triplet excitons along single polyfluorene chains in solution has been studied by monitoring their transport to end traps. Time-resolved transient absorption and steady state fluorescence were used to determine fractions of excitons that reach the end caps. In order to accurately determine the singlet diffusion coefficient, the fraction of polymer ends that have end traps was determined through a combination of NMR and triplet quenching experiments. The distributions of polymer lengths were also taken into account and the resulting analysis points to a surprisingly long singlet diffusion length of 34 nm. Experiments on triplet transport also suggest that the entire 100nm+ chain is accessible to the triplet during its lifetime suggesting a lack of hindrance by defects or traps on this timescale. Time Resolved Microwave Conductivity measurements were also performed on a series of different length oligo- and polyfluorenes in solution allowing a global fit to be performed to extract an accurate intrachain mobility of 1.1 cm2/Vs.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume9549
ISBN (Print)9781628417159
DOIs
Publication statusPublished - 2015
EventPhysical Chemistry of Interfaces and Nanomaterials XIV - San Diego, United States
Duration: Aug 9 2015Aug 12 2015

Other

OtherPhysical Chemistry of Interfaces and Nanomaterials XIV
CountryUnited States
CitySan Diego
Period8/9/158/12/15

Fingerprint

Trap
Polymers
Exciton
traps
Electron
Excitons
Electrons
polymers
excitons
electrons
Quenching
diffusion length
caps
Fluorescence
Diffusion Coefficient
Microwave
Conductivity
Experiment
Lifetime
Time Scales

Keywords

  • Conjugated polymers
  • exciton diffusion length
  • microwave conductivity
  • OPV
  • polyfluorene
  • single chain

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Bird, M., Mauro, G., Zaikowski, L., Li, X., Reid, O., Karten, B., ... Miller, J. R. (2015). Singlet, triplet, electron and hole transport along single polymer chains. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 9549). [95490E] SPIE. https://doi.org/10.1117/12.2188873

Singlet, triplet, electron and hole transport along single polymer chains. / Bird, Matthew; Mauro, Gina; Zaikowski, Lori; Li, Xiang; Reid, Obadiah; Karten, Brianne; Asaoka, Sadayuki; Chen, Hung Cheng; Cook, Andrew R.; Rumbles, Gary; Miller, John R.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9549 SPIE, 2015. 95490E.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Bird, M, Mauro, G, Zaikowski, L, Li, X, Reid, O, Karten, B, Asaoka, S, Chen, HC, Cook, AR, Rumbles, G & Miller, JR 2015, Singlet, triplet, electron and hole transport along single polymer chains. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 9549, 95490E, SPIE, Physical Chemistry of Interfaces and Nanomaterials XIV, San Diego, United States, 8/9/15. https://doi.org/10.1117/12.2188873
Bird M, Mauro G, Zaikowski L, Li X, Reid O, Karten B et al. Singlet, triplet, electron and hole transport along single polymer chains. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9549. SPIE. 2015. 95490E https://doi.org/10.1117/12.2188873
Bird, Matthew ; Mauro, Gina ; Zaikowski, Lori ; Li, Xiang ; Reid, Obadiah ; Karten, Brianne ; Asaoka, Sadayuki ; Chen, Hung Cheng ; Cook, Andrew R. ; Rumbles, Gary ; Miller, John R. / Singlet, triplet, electron and hole transport along single polymer chains. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9549 SPIE, 2015.
@inproceedings{22b30640550d4554a204006bc7ffb471,
title = "Singlet, triplet, electron and hole transport along single polymer chains",
abstract = "The diffusion of singlet and triplet excitons along single polyfluorene chains in solution has been studied by monitoring their transport to end traps. Time-resolved transient absorption and steady state fluorescence were used to determine fractions of excitons that reach the end caps. In order to accurately determine the singlet diffusion coefficient, the fraction of polymer ends that have end traps was determined through a combination of NMR and triplet quenching experiments. The distributions of polymer lengths were also taken into account and the resulting analysis points to a surprisingly long singlet diffusion length of 34 nm. Experiments on triplet transport also suggest that the entire 100nm+ chain is accessible to the triplet during its lifetime suggesting a lack of hindrance by defects or traps on this timescale. Time Resolved Microwave Conductivity measurements were also performed on a series of different length oligo- and polyfluorenes in solution allowing a global fit to be performed to extract an accurate intrachain mobility of 1.1 cm2/Vs.",
keywords = "Conjugated polymers, exciton diffusion length, microwave conductivity, OPV, polyfluorene, single chain",
author = "Matthew Bird and Gina Mauro and Lori Zaikowski and Xiang Li and Obadiah Reid and Brianne Karten and Sadayuki Asaoka and Chen, {Hung Cheng} and Cook, {Andrew R.} and Gary Rumbles and Miller, {John R.}",
year = "2015",
doi = "10.1117/12.2188873",
language = "English",
isbn = "9781628417159",
volume = "9549",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",

}

TY - GEN

T1 - Singlet, triplet, electron and hole transport along single polymer chains

AU - Bird, Matthew

AU - Mauro, Gina

AU - Zaikowski, Lori

AU - Li, Xiang

AU - Reid, Obadiah

AU - Karten, Brianne

AU - Asaoka, Sadayuki

AU - Chen, Hung Cheng

AU - Cook, Andrew R.

AU - Rumbles, Gary

AU - Miller, John R.

PY - 2015

Y1 - 2015

N2 - The diffusion of singlet and triplet excitons along single polyfluorene chains in solution has been studied by monitoring their transport to end traps. Time-resolved transient absorption and steady state fluorescence were used to determine fractions of excitons that reach the end caps. In order to accurately determine the singlet diffusion coefficient, the fraction of polymer ends that have end traps was determined through a combination of NMR and triplet quenching experiments. The distributions of polymer lengths were also taken into account and the resulting analysis points to a surprisingly long singlet diffusion length of 34 nm. Experiments on triplet transport also suggest that the entire 100nm+ chain is accessible to the triplet during its lifetime suggesting a lack of hindrance by defects or traps on this timescale. Time Resolved Microwave Conductivity measurements were also performed on a series of different length oligo- and polyfluorenes in solution allowing a global fit to be performed to extract an accurate intrachain mobility of 1.1 cm2/Vs.

AB - The diffusion of singlet and triplet excitons along single polyfluorene chains in solution has been studied by monitoring their transport to end traps. Time-resolved transient absorption and steady state fluorescence were used to determine fractions of excitons that reach the end caps. In order to accurately determine the singlet diffusion coefficient, the fraction of polymer ends that have end traps was determined through a combination of NMR and triplet quenching experiments. The distributions of polymer lengths were also taken into account and the resulting analysis points to a surprisingly long singlet diffusion length of 34 nm. Experiments on triplet transport also suggest that the entire 100nm+ chain is accessible to the triplet during its lifetime suggesting a lack of hindrance by defects or traps on this timescale. Time Resolved Microwave Conductivity measurements were also performed on a series of different length oligo- and polyfluorenes in solution allowing a global fit to be performed to extract an accurate intrachain mobility of 1.1 cm2/Vs.

KW - Conjugated polymers

KW - exciton diffusion length

KW - microwave conductivity

KW - OPV

KW - polyfluorene

KW - single chain

UR - http://www.scopus.com/inward/record.url?scp=84951865050&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84951865050&partnerID=8YFLogxK

U2 - 10.1117/12.2188873

DO - 10.1117/12.2188873

M3 - Conference contribution

SN - 9781628417159

VL - 9549

BT - Proceedings of SPIE - The International Society for Optical Engineering

PB - SPIE

ER -