Photophysical property vs. medium: mononuclear, dinuclear and trinuclear Zn(II) complexes

Hens Amar; Rajak Kajal Krishna

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Photophysical property vs. medium: mononuclear, dinuclear and trinuclear Zn(II) complexes

机译：光药性与培养基：单核，二核和三核Zn（II）配合物

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Three complexes [Zn-2(L)2(mu(1,2)-OAc)(mu(1,1)-OAc)]center dot C(9)H(8)N(2)1 center dot C9H8N2, [Zn-3(L)(4)]center dot(ClO4) (2) 2 and [Zn(L)(2)]center dot CH3OH3 were synthesized using a common Schiff base 2,4-dimethyl-6-((quinolin-8-ylimino)methyl)phenol (HL) and characterized by various methods such as elemental analysis, H-1 NMR, FT-IR, UV-Vis and mass spectroscopy. The single crystal XRD analysis revealed that complex 1 is dinuclear, complex 2 trinuclear and complex 3 mononuclear in nature. The photophysical properties of the ligand and complexes were also investigated by different techniques such as UV-Vis spectroscopy, fluorescence spectroscopy, fluorescence lifetime measurement, DFT, and TDDFT calculations in solvents of different polarity. The complexes exhibited higher quantum yields than the ligand in solution. The trinuclear complex had higher emission intensity than the mono and dinuclear complexes in solution as well as in the solid state. In addition, complex 1 exhibited a unique dissymmetric coordination mode of the oxygen atom in the acetate bridging moiety.

机译：三络合物[Zn-2（1）2（mu（1,2）-oAc）（mu（1,1）-oac）]中心点C（9）H（8）N（2）1中心点C9H8N2， [Zn-3（L）（4）]中央点（CLO4）（2）2和[Zn（1）（2）]中央点CH 3 OH 3使用普通席夫碱2,4-二甲基-6 - （（喹啉-8-基胺基氨基）甲基）苯酚（HL），其特征在于各种方法，如元素分析，H-1 NMR，FT-IR，UV-VI和质谱。单晶XRD分析显示，复合物1是正核，复杂的2个三核和复合物在自然中单核。还通过不同的技术等不同技术研究了配体和配合物的光物理性质，例如UV-Vis光谱，荧光光谱，荧光寿命测量，DFT和不同极性溶剂的TDDFT计算。该配合物在溶液中的配体表现出更高的量子产率。三核复合物的发射强度高于溶液中的单核和二核复合物以及固态的溶液。另外，复合物1在乙酸桥接部分中表现出氧原子的独特不对称的配位模式。

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《RSC Advances》 |2015年第6期|共14页
作者
Hens Amar; Rajak Kajal Krishna;
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Jadavpur Univ Dept Chem Inorgan Chem Sect Kolkata 700032 India;

Jadavpur Univ Dept Chem Inorgan Chem Sect Kolkata 700032 India;

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中图分类化学;
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Photophysical property vs. medium: mononuclear, dinuclear and trinuclear Zn(II) complexes

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