Highly emissive covalent organic frameworks

Sasanka Dalapati, Enquan Jin, Matthew Addicoat, Thomas Heine, Donglin Jiang

Research output: Contribution to journalArticle

213 Citations (Scopus)

Abstract

Highly luminescent covalent organic frameworks (COFs) are rarely achieved because of the aggregation-caused quenching (ACQ) of stacked layers. Here, we report a general strategy to design highly emissive COFs by introducing an aggregation-induced emission (AIE) mechanism. The integration of AIE-active units into the polygon vertices yields crystalline porous COFs with periodic stacked columnar AIE arrays. These columnar AIE arrays dominate the luminescence of the COFs, achieve exceptional quantum yield via a synergistic structural locking effect of intralayer covalent bonding and interlayer noncovalent interactions and serve as a highly sensitive sensor to report ammonia down to sub ppm level. Our strategy breaks through the ACQ-based mechanistic limitations of COFs and opens a way to explore highly emissive COF materials.

Original languageEnglish
Pages (from-to)5797-5800
Number of pages4
JournalJournal of the American Chemical Society
Volume138
Issue number18
DOIs
Publication statusPublished - 2016 May 11

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All Science Journal Classification (ASJC) codes

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

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