N,N-二(4-(6-2,2′-联吡啶)-苯甲基)-2-(氨甲基)吡啶的合成、结构和光谱性质

合成了一种多齿配体N,N-二(4-(6-2,2′-联吡啶)-苯甲基)-2-(氨甲基)吡啶(C40H32N6),并用MS,EA,1HNMR进行结构表征,测试了吸收光谱(UV)和荧光光谱(FL).随HBF4,乙酸锌的加入,荧光光谱明显红移;随Cu2+浓度增加吸收峰强度逐渐增加,但发射峰逐渐消失,成为激发态荧光体的猝灭剂.测量并计算了摩尔消光系数和量子产率,并用密度泛函理论计算预测了其稳定的空间构型.

Synthesis,structure,and spectra studies of N,N-bis(4-(6-2,2'-bipyridine)-phenyl-methyl)-2-(aminomethyl)pyridine

Polydentate ligand N,N-bis(4-(6-(pyridine-2-yl)pyridin-2-yl)benzyl)(pyridin-2-yl)methanamine has been synthesized and characterized by MS,EA,and ¹H NMR.Photophysical behaviors of the ligand were investigated by UV-Vis absorption and fluorescence spectrometry.Addition of HBF₄ and zinc acetateto the solution of ligand all resulted in an obvious red-shift of fluorescence.Introduction of Cu ²⁺ to the methanol solution of ligand caused a progressive increasing of absorption intensity and agradual disappearing of emission bands,which indicated that Cu ²⁺ was a quencher of the excited-state fluorescence.Molar extinction coefficient and quantum yield were measured and calculated.The stable space configuration of the ligand was predicted by density functional theory calculations.