Hasegawa Yasuchika, Tateno Shiori, Yamamoto Masanori, Nakanishi Takayuki, Kitagawa Yuichi, Seki Tomohiro, Ito Hajime, Fushimi Koji
Faculty of Engineering, Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.
Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.
Chemistry. 2017 Feb 21;23(11):2666-2672. doi: 10.1002/chem.201605054. Epub 2017 Jan 27.
Luminescent Eu coordination polymers with rigid triangular spacer ligands are reported. The Eu coordination polymer, [Eu (hfa) (tppb) ] (hfa: hexafluoroacetylacetonate, tppb: tris(4-diphenylphosphorylphenyl)benzene), shows high thermo-stability (decomposition temperature=354 °C) and photoluminescence quantum yield (Φ =82 %, photosensitized energy transfer efficiency=78 %). The triboluminescence efficiency of Eu 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 coordination polymers are demonstrated for the first time.
报道了具有刚性三角形间隔配体的发光铕配位聚合物。铕配位聚合物[Eu (hfa) (tppb) ]（hfa：六氟乙酰丙酮，tppb：三(4-二苯基磷酰基苯基)苯）具有高热稳定性（分解温度 = 354 °C）和光致发光量子产率（Φ = 82%，光敏能量转移效率 = 78%）。计算得出，在激光脉冲照射（Nd:YAG，λ = 1064 nm，脉冲宽度 = 5 ns，脉冲能量 = 0.1 mJ）下，具有三角形间隔的铕配位聚合物的摩擦发光效率为49%。首次展示了铕配位聚合物的特征三角形结构、高发射量子产率、有效的光敏能量转移和显著的摩擦发光特性。
