Facile Preparation of Highly Luminescent Materials by Electrostatic Immobilization of Anionic Metal Complex onto Anion-Exchanger as Exemplified with Tri-Terbium(III) Cluster Complex of Thiacalix[4]arene-p-tetrasulfonate

Research output: Contribution to journalArticlepeer-review

Abstract

We propose a strategy to prepare luminescence materials via simple and organic solvent-free fashion by mixing an anionic luminescent complex with an anion exchanging support. As a proof-of-concept, we employed the heptaanionic TbIII complex Tb3TCAS2 (TCAS = thiacalix[4]arene-p-tetrasulfonate) and QAE Sephadex A-25, a dextran support bearing anion exchanging groups. By stirring a mixture of TCAS and dextran (1.0 ¯mol Tb3TCAS2/50 mg dextran), 99.8% of Tb3TCAS2 was successfully immobilized within 2 h. The electrostatic interactions were strong enough to irreversibly bind Tb3TCAS2 to the dextran. The material exhibited TbIII-centered luminescence upon excitation of the TCAS center. The luminescent lifetime and quantum yield were 1.18 ms and 45.5%, respectively. When the amount of Tb3TCAS2 immobilized on the dextran was reduced to 1.0 nmol/50 mg dextran, the lifetime increased to 1.32 ms, suggesting concentration quenching above 1.0 ¯mol Tb3TCAS2/50 mg dextran. On the other hand, the luminescence quantum yield decreased to 3.1%, suggesting that the absorption of excited light by the support was not negligible. Preparation of the materials in D2O resulted in increases in the lifetime and quantum yields to 1.32 ms and 44%, respectively.

Original languageEnglish
Pages (from-to)1847-1852
Number of pages6
JournalBulletin of the Chemical Society of Japan
Volume92
Issue number11
DOIs
Publication statusPublished - 2019 Jan 1

Keywords

  • Luminescent materials
  • Terbium
  • Thiacalixarene

ASJC Scopus subject areas

  • Chemistry(all)

Fingerprint Dive into the research topics of 'Facile Preparation of Highly Luminescent Materials by Electrostatic Immobilization of Anionic Metal Complex onto Anion-Exchanger as Exemplified with Tri-Terbium(III) Cluster Complex of Thiacalix[4]arene-p-tetrasulfonate'. Together they form a unique fingerprint.

Cite this