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

Xuhui Jin, Michael Price, John Finnegan, Charlotte Boott, Johannes Richter, Akshay Rao, Matthew Menke, Richard Friend, George Whittell, Ian Manners

Research output: Contribution to journalReview article (Academic Journal)

88 Citations (Scopus)
498 Downloads (Pure)

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 languageEnglish
Pages (from-to)897-900
Number of pages4
JournalScience
Volume360
Issue number6391
DOIs
Publication statusPublished - 25 May 2018

Structured keywords

  • BCS and TECS CDTs

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    Jin, X., Price, M., Finnegan, J., Boott, C., Richter, J., Rao, A., Menke, M., Friend, R., Whittell, G., & Manners, I. (2018). Long-range exciton transport in conjugated polymer nanofibers prepared by seeded growth. Science, 360(6391), 897-900. https://doi.org/10.1126/science.aar8104