Highly fluorescent and color-tunable exciplex emission from poly(N-vinylcarbazole) film containing nanostructured supramolecular acceptors

Jong H. Kim, Byeong Kwan An, Seong Jun Yoon, Sang Kyu Park, Ji Eon Kwon, Chang Keun Lim, Soo Young Park

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Highly fluorescent excited-state charge-transfer complexes (exciplexes) formed at the interfacial region between a polymeric donor matrix, here, poly(N-vinylcarbazole), and embedded nanostructured acceptors are characterized for their photophysical properties. Exciplex-to-exciton emission switching is observed after solvent vapor annealing (SVA) due to the size evolution of the nanostructures beyond the exciton diffusion length. Color-tunable exiplex emission (sky blue, green, and orange) is demonstrated for three different nanostructured acceptors with the same HOMO-LUMO gap (i.e., the same blue excitonic emission) but with different electron affinity. White-emitting poly(N-vinylcarbazole) film is also fabricated, simply by incorporating mixed supramolecular acceptors, which provide independent exciplex emissions. This study presents important insights into the excited-state intermolecular interaction at the well-defined nanoscale interface and suggests an efficient way to obtain multicolored exciplex emissions.

Original languageEnglish
Pages (from-to)2746-2753
Number of pages8
JournalAdvanced Functional Materials
Volume24
Issue number19
DOIs
Publication statusPublished - May 21 2014
Externally publishedYes

Keywords

  • emission
  • emission switching
  • exciplexes
  • fluorescence
  • nanostructured acceptors
  • self-assembly

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Highly fluorescent and color-tunable exciplex emission from poly(N-vinylcarbazole) film containing nanostructured supramolecular acceptors'. Together they form a unique fingerprint.

  • Cite this