ZnO/PAMAM G5.0的合成及其对“502”熏显处理指印的增显作用研究  

Synthesis of ZnO/PAMAM G5.0 Nano Composite and Its Application on the Enhancement of Cyanoacrylate Pre-Treated Fingermark

作　　者：王元凤 宋朝朝 段伟[3] 王文龙 杜然 

机构地区：[1]"2011计划"司法文明协同创新中心,北京100025 [2]中国政法大学证据科学教育部重点实验室,北京100192 [3]西安政治学院司法鉴定中心,陕西西安710068

出　　处：《光谱学与光谱分析》2017年第12期3814-3818,共5页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(61108075);北京科技新星计划项目(2015B91);教育部科学技术研究重点项目(109038)资助

摘　　要：为了同时解决纳米指印显现试剂的灵敏度、专属性以及安全性等方面的问题,设计出氧化锌/聚酰胺-胺树形分子纳米复合材料(ZnO/PAMAM G5.0)的构架,并探索了相关的合成条件、产物的荧光性能及其在潜指印显现方面的应用前景。实验结果表明,ZnO纳米颗粒可以在PAMAM G5.0树形分子的模板作用下控制生成;合成产物在中波紫外光的激发作用下可以发出蓝色可见光;当锌离子与树形分子的负载比介于10~100范围内时,合成产物的荧光性能呈现先增长后下降的趋势,并在负载比为60时得到最强光致发光效果;对于经"502"熏显法固定后的潜指印样本,ZnO/PAMAM G5.0纳米复合材料可以通过胺解反应途径对其进行有效的增显。ZnO/PAMAM G5.0纳米复合材料有望引领纳米指印显现试剂新的发展方向。In order to improve the sensitivity ,specificity and safety of latent fingermark reagent based on nano technique ,we de-signed the structure of ZnO/PAMAM G5.0 nano composites ,explored its synthesis method ,examined the fluorescent property of the newly developed nano composites and investigated its application on the enhancement of cyanoacrylate pre-treated finger-mark .The results indicated that ZnO nano particles could be on-site synthesized under the control of PAMAM G5.0 dendrimer template .ZnO/PAMAM G5.0 nano composites emitted blue light under the excitation of long UV light .When the concentration ratios of Zn2＋ and PAMAM dendrimers were between 10~100 ,the fluorescent intensity of ZnO/PAMAM G5.0 nano compos-ites changed with respect to the increase of the concentration ratio .The highest fluorescent intensity could be reached when the concentration ratio was set at 60 .Cyanoacrylate pre-treated fingermark could be enhanced by the amidation reaction between ZnO/PAMAM G5.0 nano composites and the ester terminal groups of cyanoacrylate polymer .The newly developed ZnO/PAM-AM G5.0 nano composites obtain the fluorescent characteristics through non-toxic quantum dots and strengthen latent the finger-mark development based on routine developing method .It will play an important role in the development of latent fingermark reagent based on nano technique in the near future .

关 键 词：氧化锌 聚酰胺-胺树形分子 潜指印显现 胺解反应 紫外光谱 荧光光谱 

分 类 号：O657.3[理学—分析化学]