Encapsulation of Isolated Luminophores within Supramolecular Cages

Marcel Handke, Takuji Adachi, Chunhua Hu, Michael Ward

Research output: Contribution to journalArticle

Abstract

The sequestration of luminophores within supramolecular polyhedral compartments of a crystalline zeolite-like hydrogen-bonded framework illustrates a unique approach to limiting the self-quenching ordinarily exhibited at the high concentrations achievable in this framework. A range of differently sized luminescent guests, namely coumarin1, coumarin4, fluorescein, [Ru(bpy)3]Cl2, and rhodamineB, can be encapsulated in amounts of up to one molecule per cage, equivalent to a concentration of 0.175m, which is significantly higher than the concentration at which aggregation-induced quenching occurs in other media. The luminescence spectra of the encapsulated guests are consistent with the presence of isolated monomers and the absence of self-quenching. The emission color of the single crystals can be tuned readily from blue to red through the choice of guest molecules. These observations promise an approach to organic solid-state lasing compounds if crystals of sufficient size and quality can be prepared.

Original languageEnglish (US)
JournalAngewandte Chemie - International Edition
DOIs
StateAccepted/In press - 2017

Fingerprint

Encapsulation
Quenching
Zeolites
Molecules
Fluorescein
Luminescence
Hydrogen
Agglomeration
Monomers
Single crystals
Crystalline materials
Color
Crystals

Keywords

  • Dyes
  • Host-guest systems
  • Luminescence
  • Microporous materials
  • Supramolecular cages

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Cite this

Encapsulation of Isolated Luminophores within Supramolecular Cages. / Handke, Marcel; Adachi, Takuji; Hu, Chunhua; Ward, Michael.

In: Angewandte Chemie - International Edition, 2017.

Research output: Contribution to journalArticle

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