Near infrared photoluminescence of ytterbium(III) complexes from tripodal ligands with different coordination conformations

作者：Pan, Mei^*; Lan, Mei Hua; Wang, Xue Tao; Yan, Cheng; Liu, Yu; Su, Cheng Yong

来源：Inorganica Chimica Acta, 2010, 363(14): 3757-3764.

DOI：10.1016/j.ica.2010.05.035

• Near infrared
• Ytterbium
• triRNTB
• Peak splitting

Fourteen ytterbium(III) complexes of the tripodal ligands triRNTB (N-substituted tris(benzimidazol-2-ylmethyl) amine) have been prepared and characterized by elemental analysis (EA), infrared spectra (IR), electrospray ionization mass spectrometry (ESI-MS) and single-crystal diffraction analysis. Their coordination conformations can be divided into three different types due to the introduction of secondary ligands or counter anions, i.e. ML(2), MLL(3)', and MLA(3) types, therefore resulting in different coordination symmetry on the central Yb(III) ions. Accordingly, the near infrared photoluminescence and photophysical properties of the complexes show contrasting results in peak splitting behavior, lifetime, and quantum efficiency, among which the ML(2) type displaying the most complicated splitting, the shortest lifetime and the smallest quantum efficiency.

• 出版日期2010-11-25
• 单位中山大学