作者:Juan Jin、Fu-Quan Bai、Ming-Jun Jia、Jie-Hui Yu、Ji-Qing Xu
DOI:10.1039/c2dt30389b
日期:——
By the simple hydrothermal self-assembly, four new monoacylhydrazidate-coordinated compounds [Mn(APTH)2(H2O)] 1, [Pb(APTH)2]·0.25H2O 2, [Pb2(EPDH)4(H2O)] 3 and [Pb(MPDH)2] 4 (APTH = 3-aminophthalhydrazidate, EPDH = 5-ethylpyridine-2,3-dicarboxylhydrazidate, MPDH = 6-methylpyrinde-2,3-dicarboxylhydrazidate) were obtained. It is noteworthy that APTH was derived from the in situ reduction reaction of NPTH (3-nitrophthalhydrazide) with N2H4·H2O as the reducer, whereas EPDH and MPDH were derived respectively from the in situ acylation reactions of epdca and mpdca (epdca = 5-ethylpyridine-2,3-dicarboxylic acid, mpdca = 6-methylpyridine-2,3-dicarboxylic acid) with N2H4·H2O. The photoluminescence analysis indicates that compounds 3 and 4 possess luminescence properties with maximum emissions at 531 nm for 3, and 600 nm for 4, respectively. The density functional theory (DFT) calculations indicate that the emission for compound 3 can be ascribed to a combination of the intra-ligand and inter-ligand charge transfers, while the emission for compound 4 is assigned to the intra-ligand charge transfer.
通过简单的水热自组装,合成了四种新的单酰肼配位化合物[Mn(APTH)2(H2O)] 1、[Pb(APTH)2]·0.25H2O 2、[Pb2(EPDH)4(H2O)] 3和获得[Pb(MPDH) 2 ] 4 (APTH=3-氨基邻苯二甲酰肼、EPDH=5-乙基吡啶-2,3-二羧基酰肼、MPDH=6-甲基吡啶-2,3-二羧基酰肼)。值得注意的是,APTH源自NPTH(3-硝基邻苯二甲酰肼)以N2H4·H2O为还原剂的原位还原反应,而EPDH和MPDH分别源自epdca和mpdca的原位酰化反应(epdca = 5-乙基吡啶-2,3-二甲酸,mpdca = 6-甲基吡啶-2,3-二甲酸)与N2H4·H2O。光致发光分析表明,化合物3和4具有发光特性,其中3的最大发射波长为531 nm,4的最大发射波长为600 nm。密度泛函理论 (DFT) 计算表明,化合物 3 的发射可归因于配体内和配体间电荷转移的组合,而化合物 4 的发射则归因于配体内电荷转移。