论文部分内容阅读
以乙二胺(EDA)、三羟甲基丙烷三丙烯酸酯(TMPTA)和苯甲醛(BZA)为原料,合成了聚(胺-酯)-苯甲醛树枝状大分子(PAE-BZA),产率为60.82%,色谱纯度为65.27%。用IR、1HNMR和13CNMR表征了它的结构;并测定了PAE-BZA的荧光性能;考察了不同浓度PAE-BZA、不同溶剂及n(Sn2+)/n(PAE-BZA)对其荧光性能的影响。结果表明,丙酮为溶剂时,0.5 mmol/L PAE-BZA荧光强度最强;以丙酮、甲醇、DMSO、DMF和乙醇等为溶剂,PAE-BZA在乙醇中的荧光强度最强。随着n(Sn2+)/n(PAE-BZA)增加,PAE-BZA的荧光强度先减弱后增强,且Sn2+与PAE-BZA络合顺序是由外围的N原子逐步向内部的N原子络合。
Poly (amine-ester) -benzaldehyde dendrimer (PAE-BZA) was synthesized from ethylenediamine (EDA), trimethylolpropane triacrylate (TMPTA) and benzaldehyde (BZA) The rate was 60.82% and the chromatographic purity was 65.27%. Its structure was characterized by IR, 1HNMR and 13CNMR. The fluorescence properties of PAE-BZA were measured. The effects of PAE-BZA, different solvents and n (Sn2 +) / n . The results showed that PAE-BZA had the highest fluorescence intensity when 0.5 mmol / L acetone was used as the solvent, and PAE-BZA had the strongest fluorescence intensity in ethanol with acetone, methanol, DMSO, DMF and ethanol as the solvents. With the increase of n (Sn2 +) / n (PAE-BZA), the fluorescence intensity of PAE-BZA first decreases and then increases, and the order of complexation of Sn2 + with PAE-BZA is from the peripheral N atom to the internal N atom.