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A coumarin based gold(i)-alkynyl complex: a new class of supramolecular hydrogelators.

Authors
  • Moro, Artur J
  • Rome, Bertrand
  • Aguiló, Elisabet
  • Arcau, Julià
  • Puttreddy, Rakesh
  • Rissanen, Kari
  • Lima, João Carlos
  • Rodríguez, Laura
Type
Published Article
Journal
Organic & Biomolecular Chemistry
Publisher
The Royal Society of Chemistry
Publication Date
Feb 21, 2015
Volume
13
Issue
7
Pages
2026–2033
Identifiers
DOI: 10.1039/c4ob02077d
PMID: 25519878
Source
Medline
License
Unknown

Abstract

A phosphine-gold(i)-alkynyl-coumarin complex, [Au{7-(prop-2-ine-1-yloxy)-1-benzopyran-2-one}(DAPTA)] (), was synthesized and the formation of long luminescent fibers in solution was characterized via fluorescence microscopy and dynamic light scattering. The fibers presented strong blue and green luminescence, suggesting that the gold(i) in the complex increased intersystem crossing due to the heavy atom effect, resulting in a significant increase in triplet emission. The X-ray structure of the fibers indicates that both aurophilic, π-π interactions and hydrogen bonding contribute to their formation in aqueous solvents.

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