Multicomponent molecular puzzles for photofunction design: Emission color variation in lewis acid-base pair crystals coupled with guest-to-host charge transfer excitation

Toshikazu Ono, Manabu Sugimoto, Yoshio Hisaeda

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

Simple yet ubiquitous multimolecular assembly systems with color-tunable emissions are realized by cooperative electron donor-acceptor interactions, such as the boron-nitrogen (B-N) dative bond as a Lewis acid-base pair and charge transfer (CT) interactions. These are ternary-component systems consisting of a naphthalenediimide derivative (NDI), tris(pentafluorophenyl)borane (TPFB), and aromatic molecules (guest) with an NDI:TPFB:guest ratio of 1:2:2. The crystal shows guest-dependent color-tunable emissions such as deep blue to orange when a guest molecule of benzene is replaced with other conjugated systems. A good correlation between the emission wavelength and ionization potential of the guest and electronic structure calculations indicated that the emission is due to the CT transition from the guest to the NDI. The present study suggests that a rational solution of multcomponent molecular puzzles would be useful for obtaining novel photofunctional solid-state systems.

Original languageEnglish
Pages (from-to)9519-9522
Number of pages4
JournalJournal of the American Chemical Society
Volume137
Issue number30
DOIs
Publication statusPublished - Aug 5 2015

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All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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