Tuning optical properties of poly(3-hexylthiophene) nanoparticles through hydrothermal processing

Seok Ho Lee, Yong Baek Lee, Dong Hyuk Park, Mi Suk Kim, Eun Hei Cho, Jinsoo Joo

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Poly(3-hexylthiophene) (P3HT) nanoparticles (NPs) were prepared by a reprecipitation method. Hydrothermal processing applied external pressure to the pristine P3HT NPs at temperatures ranging from 60 to 150 °C. Optical absorption and photoluminescence (PL) spectra for the hydrothermally treated P3HT NPs varied markedly with the processing temperature. With increasing treatment temperature, the absorption peak broadened and the peak position shifted from 510 to 623 nm; moreover, the intensity ratio of the 0-1 to 0-0 emission varied. These changes were caused by interactions between the P3HT main chains and alkyl side groups and conformational modifications induced by the high pressure during the hydrothermal process. The evolution of the optical absorption spectra of the P3HT NPs during the hydrothermal processing was strongly correlated with the variation of PL excitation spectra and with the PL emission spectra of a single NP.

Original languageEnglish
Article number025002
JournalScience and Technology of Advanced Materials
Volume12
Issue number2
DOIs
Publication statusPublished - 2011 Mar

ASJC Scopus subject areas

  • Materials Science(all)

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