配合物[Ni~Ⅲ(chxn)_2Br]Br_2、[Ni~Ⅱ(chxn)_2]Br_2和[Ni~Ⅱ(en)_2]Br_2的合成与荧光性质  

Synthesis and Fluorescence Property of [Ni^(Ⅲ)(chxn)_2Br]Br_2、[Ni~Ⅱ(chxn)_2]Br_2 and [Ni~Ⅱ(en)_2]Br_2 Complexes

作　　者：章明美[1] 谢吉民[1,2] 吴云龙[1] 鲁婷[1] 

机构地区：[1]江苏大学化学化工学院,江苏镇江212013 [2]南京大学配位化学国家重点实验室,江苏南京210097

出　　处：《化学世界》2011年第2期74-76,共3页Chemical World

基　　金：高等学校博士学科点专项科研基金(20093227110009)资助

摘　　要：在氮气的保护下,以无水甲醇为溶剂合成了几种以chxn(chxn=1(R),2(R)-环己二胺)和en(en=乙二胺)为配体的镍配合物,单晶结构分析和元素分析确定其组成。并对其进行了UV-Vis吸收光谱、荧光光谱的测定和比较,结果表明镍的二价和三价配合物在紫外可见区吸收带的位置和强度明显不同,几种配体和配合物均具有较好的荧光性质,配体荧光图谱显示荧光发射峰在408 nm,荧光量子效率高,而合成的三价镍配合物荧光发射峰则紫移至360 nm左右。A series of single crystals of the complexes of nickel hydrate with chxn（chxn =1（R）,2（R）-diaminocyclohexane） and en（en =ethylenediamine） were synthesized in dry N_2 atmosphere and absolute methanol.The composition and the crystal structure of the complexes were tested.The spectroscopic properties were compared using solid UV spectrophotometer and fluorescence spectrophotometer.The experimental results showed that the position and intensity of the UV absorption bands of the two and three valence nickel complexes were apparently different.The two ligands and compounds are all stable luminescence material.The two ligands emit intensive fluorescence at the peak wavelength of 408 nm,whereas the weaker emission of the three valence nickel complexes shifts to 360 nm.

关 键 词：镍配合物 元素分析 固体紫外-可见光谱 荧光光谱 

分 类 号：O626[理学—有机化学]