合成了2,4-二甲基-6-（4＇-N,N-二甲氨基苯乙烯基）-1,3,5-均三嗪（1）和2-苯乙烯基-4,6-二甲基-1,3,5-均三嗪（2）两种化合物,并对其进行了1H NMR,MS,元素分析等表征.采用吸收光谱法研究了金属离子与化合物间的相互作用,结果显示：化合物1对Fe3＋和Cu2＋表现出高选择性光谱响应,其最大吸收波长由393 nm分别红移至525 nm和513 nm,溶液颜色由黄色变为粉红色.化合物1与Fe3＋结合形成1∶1型配合物,其结合常数为1.8×104L mol-1;与Cu2＋结合形成2∶1型配合物,其结合常数为2.6×1010L mol-1.化合物2仅对Fe3＋呈现显著的光谱变化,其最大吸收波长由304nm红移至357 nm,而Cu2＋的加入未引起光谱明显变化,2与Fe3＋亦形成1∶1型配合物,结合常数为1.0×105L mol-1.结果表明Fe3＋可能与化合物1和2中三嗪N配位,而Cu2＋与化合物1中甲氨基中的N配位.同时考察了其它金属离子如Li＋,K＋,Mg2＋,Ca2＋,Co3＋,Ni2＋,Ag＋,Cd2＋,Hg2＋和Zn2＋等离子对化合物1和2吸收光谱的影响,结果显示两者光谱均无明显变化,据此提出了高选择性Fe3＋,Cu2＋的识别体系.%In this paper,two compounds of s-triazine derivatives which named 2,4-dimethyl-6-[（4＇-N,Ndimethylamino）phenylethenyl]-1,3,5-s-triazine（1） and 2-styryl-4,6-dimethyl-1,3,5-triazine（2） were synthesized and characterized by 1H NMR,MS and elemental analysis.The interactions between the metal ions and compounds 1～3 were investigated by UV-vis spectroscopy.Results indicated that the absorption spectrum of compound 1 had a remarkable change when it combined with Fe3＋ and Cu2＋,and the maximum absorption peaks shifted from 393 nm to 525 nm and 513 nm,respectively.The models of compound 1 intergraded with Fe3＋ and Cu2＋ were 1∶1 and 2∶1,respectively,but with the same remarkable color change from yellow to pink by naked-eye colorimetric detection.The association constants of 1-Fe3＋ and 1-Cu2＋ were 1.8×104 L mol-1 and 2.6×1010 L mol-1 respectively.Meanwhile,the spectrum of compound 2 underwent distinct change when it combined with Fe3＋ and the maximum absorption peak shifted from 304 nm to 357 nm.But less change was observed when it intergraded with Cu2＋.The ratio of compound 2 intergraded with Fe3＋ was 1∶1 and the association constants was 1.0×105 L mol-1.Therefore,we could concluded that Fe3＋ combined with the ring of triazine of the compounds 1 and 2,but the Cu2＋ intergraded with N atom of the methylamino of the compound 1.At the same time,the interactions of compounds 1 and 2 with other ions such as Li＋,K＋,Mg2＋,Ca2＋,Co3＋,Ni2＋,Ag＋,Cd2＋,Hg2＋and Zn2＋ were also investi-gated,but obvious absorption spectral changes was not observed.Thus a new kind chemosensor for Fe3＋ and Cu2＋with high selectivity and sensitivity was introduced.
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