Slow magnetic relaxation in a Tb(iii)-based coordination polymer

Takefumi Yoshida, Yemineni S.L.V. Narayana, Hitoshi Abe, Masayoshi Higuchi

Research output: Contribution to journalArticlepeer-review

Abstract

A Tb(iii)-based coordination polymer (polyTb) was synthesized by complexation of Tb(NO3)3·(6H2O) and 4′,4′′′′-[1,1′-biphenyl]-4,4′-diylbis[6,6′′-bis(ethoxycarbonyl)2′:6′,2′′-terpyridine](L). The polymer structure was determined by Job's plots, DFT calculation, and X-ray absorption fine structure (XAFS) measurement. Job's plots indicated that the mole ratio (Tb ion : L) is 1 : 1. The optimized model structures suggested a La model: the LaN6...(O═C)2 model. The bond distances of La-O and La-N are ∼2.80 Å and 2.60 Å, respectively. The EXAFS fitting indicated that the bond distances of Tb-O and Tb-N are 2.65 Å and 2.95 Å, respectively. polyTb shows field-induced magnetic relaxation in the solid and solution state. The luminescence of polyTb, originating from an f-f transition, was observed (ϕ = 6.9%). polyTb formed a porous structure on a Si substrate, whereas a fibrous complex structure was formed on glass. polyTb chains are orientated on glass, which were determined by XRD.

Original languageEnglish
Pages (from-to)16066-16071
Number of pages6
JournalDalton Transactions
Volume47
Issue number45
DOIs
Publication statusPublished - 2018 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Inorganic Chemistry

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