Synthesis and luminescence properties of platinum(II) complexes of 4′-chloro-2,2′:6′,2"-terpyridine and 4,4′,4"-trichloro-2,2′:6′,2"-terpyridine
Synthesis and luminescence properties of platinum(II) complexes of 4′-chloro-2,2′:6′,2"-terpyridine and 4,4′,4"-trichloro-2,2′:6′,2"-terpyridine
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DOI：
10.1016/s0020-1693(01)00420-0
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发表时间：
2001-06-18
影响因子：
2.8
通讯作者：
Cummings, SD
中科院分区：
文献类型：
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作者：
Hobert, SE;Carney, JT;Cummings, SD
以顺式[Pt（二甲亚砜）（2）Cl-2]和4，4 '，4“-三氯-2，2'：6 '，2“-三联吡啶（Cl（3）terpy）为原料，合成了[Pt（Cl（3）terpy）Cl] PF 6配合物。以顺式[Pt（1，5-环辛烯）Cl-2]和4 ' -氯-2，2'：6 '，2“-三联吡啶（Clterpy）为原料，合成了[Pt（Clterpy）Cl]Cl配合物。配合物的结构经H-1 NMR、IR、W-Vis光谱和元素分析表征。这些配合物的最低能量激发态是金属-配体电荷转移（MLCT）。W-Vis和低温发光光谱表明，MLCT态的能量降低氯化的三联吡啶配体。氯化对298 K流体溶液的发光性能也有显著影响。与相关的“母体”配合物[Pt（terpy）Cl]（+）不同，氯化的terpy配合物在298 K的室温流体溶液中是发光的。[Pt（Cl（3）terpy）Cl] PF 6的1.9 μ s（MLCT）-M-3发射寿命对于流体溶液中的铂（II）络合物来说异常长。(C)2001 Elsevier Science B. V.保留所有权利。
The complex [Pt(Cl(3)terpy)Cl]PF6 has been prepared from cis-[Pt(dimethylsulfoxide)(2)Cl-2] and 4,4 ' ,4 " -trichloro-2,2 ' :6 ' ,2 " -terpyridine (Cl(3)terpy). The complex [Pt(Clterpy)Cl]Cl has been prepared from cis-[Pt(l,5-cyclooctadiene)Cl-2] and 4 ' -chloro-2,2 ' :6 ' ,2 " -terpyridine (Clterpy). Complexes have been characterized by H-1 NMR, IR and W-Vis spectroscopies and elemental analysis. The lowest energy excited state for these complexes is metal-to-ligand charge transfer (MLCT) in character. W-Vis and low-temperature luminescence spectroscopy indicate that the MLCT state energy is lowered by chlorination of the terpy ligand. Chlorination also has substantial effects on the luminescent properties in fluid solution at 298 K. Unlike the related 'parent' complex [Pt(terpy)Cl](+), the chlorinated terpy complexes are luminescent in ambient fluid solution at 298 K. The 1.9 mus (MLCT)-M-3 emission lifetime for [Pt(Cl(3)terpy)Cl]PF6 is unusually long for a platinum(II) complex in fluid solution. (C) 2001 Elsevier Science B.V. All rights reserved.