Excited-state intramolecular proton transfer (ESIPT) fluorescence from 3-amidophthalimides displaying RGBY emission in the solid state

Hideki Okamoto, Kazumasa Itani, Minoru Yamaji, Hiroyuki Konishi, Hiromi Ota

Research output: Contribution to journalArticle

5 Citations (Scopus)


Fluorescence properties of phthalimide derivatives (1) incorporating sulfonamide and acetamide functionalities at the 3-position were investigated both in solution and in the solid states to reveal the effects of the amide functionalities on the fluorescence properties. In the solid state, sulfonamides 1a and 1b, respectively, gave off red (λF max 595 nm) and green (λF max 537 nm) emission through an ESIPT process. Acetamides 1c and 1d, respectively displayed blue (λF max 432 nm) and yellow (λF max 560 nm) emission. Through simply modifying the amide functionality, phthalimide 1 displayed multicolor RGBY emission in the solid state.

Original languageEnglish
Pages (from-to)388-391
Number of pages4
JournalTetrahedron Letters
Issue number4
Publication statusPublished - Jan 24 2018



  • Acetamide
  • Fluorescence
  • Phthalimide
  • Sulfonamide

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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