Highly Efficient Visible-to-NIR Luminescence of Lanthanide(III) Complexes with Zwitterionic Ligands Bearing Charge-Transfer Character: Beyond Triplet Sensitization

Chemistry : a European Journal
Mei PanCheng-Yong Su

Abstract

Two zwitterionic-type ligands featuring π-π* and intraligand charge-transfer (ILCT) excited states, namely 1,1'-(2,3,5,6-tetramethyl-1,4-phenylene)bis(methylene)dipyridinium-4-olate (TMPBPO) and 1-dodecylpyridin-4(1 H)-one (DOPO), have been prepared and applied to the assembly of lanthanide coordination complexes in an effort to understand the ligand-direction effect on the structure of the Ln complexes and the ligand sensitization effect on the luminescence of the Ln complexes. Due to the wide-band triplet states plus additional ILCT excitation states extending into lower energy levels, broadly and strongly sensitized photoluminescence of f→f transitions from various Ln(3+) ions were observed to cover the visible to near-infrared (NIR) regions. Among which, the Pr, Sm, Dy, and Tm complexes simultaneously display both strong visible and NIR emissions. Based on the isostructural feature of the Ln complexes, color tuning and single-component white light was achieved by preparation of solid solutions of the ternary systems Gd-Eu-Tb (for TMPBPO) and La-Eu-Tb and La-Dy-Sm (for DOPO). Moreover, the visible and NIR luminescence lifetimes of the Ln complexes with the TMPBPO ligand were investigated from 77 to 298 K, revealing a strong ...Continue Reading

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Citations

Jun 27, 2017·Chemical Communications : Chem Comm·Yongsheng YangDongpeng Yan
Mar 23, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Yongqiang HanGuangming Li
Mar 25, 2018·Chemistry : a European Journal·Xiao-Qing GuoQing-Fu Sun
Jun 2, 2018·Chemical Communications : Chem Comm·Si-Si SunCheng-Yong Su
May 2, 2018·Chemistry : a European Journal·Xianfeng LiJunhua Luo
Oct 26, 2018·Chemical Communications : Chem Comm·Sheela ThapaYang Qin
Mar 8, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Zihan ZhangPengfei Yan
Mar 13, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Wei-Ming LiaoCheng-Yong Su
Nov 2, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Tamara BoltersdorfNicholas J Long
Sep 6, 2019·Acta Crystallographica. Section C, Structural Chemistry·Mei Rong HanMiao Li Zhu
Jul 2, 2020·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Miki HasegawaKengo Suzuki
Nov 26, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Ana de Bettencourt-DiasJosiane A Sobrinho
Nov 7, 2019·Inorganic Chemistry·Rong ChenLan-Sun Zheng
Jun 24, 2017·Inorganic Chemistry·Ryan J RobertsDaniel B Leznoff

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