Long-range exciton transport in conjugated polymer nanofibers prepared by seeded growth

Xu Hui Jin; Michael B. Price; John R. Finnegan; Charlotte E. Boott; Johannes M. Richter; Akshay Rao; S. Matthew Menke; Richard H. Friend; George R. Whittell; Ian Manners

doi:10.1126/science.aar8104

Long-range exciton transport in conjugated polymer nanofibers prepared by seeded growth

Xu Hui Jin, Michael B. Price, John R. Finnegan, Charlotte E. Boott, Johannes M. Richter, Akshay Rao, S. Matthew Menke, Richard H. Friend, George R. Whittell, Ian Manners

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

295 Scopus citations

Abstract

Easily processed materials with the ability to transport excitons over length scales of more than 100 nanometers are highly desirable for a range of light-harvesting and optoelectronic devices. We describe the preparation of organic semiconducting nanofibers comprising a crystalline poly(di-n-hexylfluorene) core and a solvated, segmented corona consisting of polyethylene glycol in the center and polythiophene at the ends. These nanofibers exhibit exciton transfer from the core to the lower-energy polythiophene coronas in the end blocks, which occurs in the direction of the interchain p-p stacking with very long diffusion lengths (>200 nanometers) and a large diffusion coefficient (0.5 square centimeters per second). This is made possible by the uniform exciton energetic landscape created by the well-ordered, crystalline nanofiber core.

Original language	English (US)
Pages (from-to)	897-900
Number of pages	4
Journal	Science
Volume	360
Issue number	6391
DOIs	https://doi.org/10.1126/science.aar8104
State	Published - May 25 2018
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2022-06-08
Acknowledgements: We thank A. Chin for helpful discussions, R. Harniman for AFM measurements, and D. Hayward and O. Gould for WAXS experiments. Supported by EPSRC grants EP/ K017799/1 (I.M.), EP/K016520/1 (R.H.F.), and EP/M005143/ 1 (R.H.F. and M.B.P.) and by a KAUST Competitive Research Grant (S.M.M. and R.H.F.).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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title = "Long-range exciton transport in conjugated polymer nanofibers prepared by seeded growth",

abstract = "Easily processed materials with the ability to transport excitons over length scales of more than 100 nanometers are highly desirable for a range of light-harvesting and optoelectronic devices. We describe the preparation of organic semiconducting nanofibers comprising a crystalline poly(di-n-hexylfluorene) core and a solvated, segmented corona consisting of polyethylene glycol in the center and polythiophene at the ends. These nanofibers exhibit exciton transfer from the core to the lower-energy polythiophene coronas in the end blocks, which occurs in the direction of the interchain p-p stacking with very long diffusion lengths (>200 nanometers) and a large diffusion coefficient (0.5 square centimeters per second). This is made possible by the uniform exciton energetic landscape created by the well-ordered, crystalline nanofiber core.",

author = "Jin, {Xu Hui} and Price, {Michael B.} and Finnegan, {John R.} and Boott, {Charlotte E.} and Richter, {Johannes M.} and Akshay Rao and Menke, {S. Matthew} and Friend, {Richard H.} and Whittell, {George R.} and Ian Manners",

note = "KAUST Repository Item: Exported on 2022-06-08 Acknowledgements: We thank A. Chin for helpful discussions, R. Harniman for AFM measurements, and D. Hayward and O. Gould for WAXS experiments. Supported by EPSRC grants EP/ K017799/1 (I.M.), EP/K016520/1 (R.H.F.), and EP/M005143/ 1 (R.H.F. and M.B.P.) and by a KAUST Competitive Research Grant (S.M.M. and R.H.F.). This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

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doi = "10.1126/science.aar8104",

language = "English (US)",

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AU - Jin, Xu Hui

AU - Price, Michael B.

AU - Finnegan, John R.

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AU - Richter, Johannes M.

AU - Rao, Akshay

AU - Menke, S. Matthew

AU - Friend, Richard H.

AU - Whittell, George R.

AU - Manners, Ian

N1 - KAUST Repository Item: Exported on 2022-06-08 Acknowledgements: We thank A. Chin for helpful discussions, R. Harniman for AFM measurements, and D. Hayward and O. Gould for WAXS experiments. Supported by EPSRC grants EP/ K017799/1 (I.M.), EP/K016520/1 (R.H.F.), and EP/M005143/ 1 (R.H.F. and M.B.P.) and by a KAUST Competitive Research Grant (S.M.M. and R.H.F.). This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2018/5/25

Y1 - 2018/5/25

N2 - Easily processed materials with the ability to transport excitons over length scales of more than 100 nanometers are highly desirable for a range of light-harvesting and optoelectronic devices. We describe the preparation of organic semiconducting nanofibers comprising a crystalline poly(di-n-hexylfluorene) core and a solvated, segmented corona consisting of polyethylene glycol in the center and polythiophene at the ends. These nanofibers exhibit exciton transfer from the core to the lower-energy polythiophene coronas in the end blocks, which occurs in the direction of the interchain p-p stacking with very long diffusion lengths (>200 nanometers) and a large diffusion coefficient (0.5 square centimeters per second). This is made possible by the uniform exciton energetic landscape created by the well-ordered, crystalline nanofiber core.

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Long-range exciton transport in conjugated polymer nanofibers prepared by seeded growth

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