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Effective Photo‐ and Triboluminescent Europium(III) Coordination Polymers with Rigid Triangular Spacer Ligands
Author(s) -
Hasegawa Yasuchika,
Tateno Shiori,
Yamamoto Masanori,
Nakanishi Takayuki,
Kitagawa Yuichi,
Seki Tomohiro,
Ito Hajime,
Fushimi Koji
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201605054
Subject(s) - europium , polymer , chemistry , polymer chemistry , materials science , organic chemistry , ion
Luminescent Eu III coordination polymers with rigid triangular spacer ligands are reported. The Eu III coordination polymer, [Eu 3 (hfa) 9 (tppb) 2 ] n (hfa: hexafluoroacetylacetonate, tppb: tris(4‐diphenylphosphorylphenyl)benzene), shows high thermo‐stability (decomposition temperature=354 °C) and photoluminescence quantum yield ( Φ 4f–4f =82 %, photosensitized energy transfer efficiency=78 %). The triboluminescence efficiency of Eu III coordination polymer with triangular spacers under laser pulse irradiation (Nd:YAG, λ =1064 nm, pulse width=5 ns, pulse energy=0.1 mJ) is calculated to be 49 %. Characteristic triangular structure, high emission quantum yield, effective photosensitized energy transfer, and remarkable triboluminescence properties of Eu III coordination polymers are demonstrated for the first time.