NaYF_(4):Yb,Tm上转换发光纳米材料的合成及在手印显现中的应用研究  

Synthesis of NaYF_(4):Yb,Tm upconversion luminescent nanomaterials and their applications in fingerprint development

作　　者：李明[1,2] LI Ming(College of Forensic Sciences,Criminal Investigation Police University of China,Shenyang 110035,China;Research Centre of Crime Governance in the New Era,Criminal Investigation Police University of China,Shenyang 110035,China)

机构地区：[1]中国刑事警察学院刑事科学技术学院,辽宁沈阳110035 [2]中国刑事警察学院新时代犯罪治理研究中心,辽宁沈阳110035

出　　处：《化学研究与应用》2021年第9期1770-1775,共6页Chemical Research and Application

基　　金：国家自然科学基金项目(21205139、21802169)资助。

摘　　要：采用溶剂热法合成了NaYF_(4):Yb,Tm上转换发光纳米材料,并对纳米材料的微观形貌、物相组成、近红外吸收性能、上转换发光性能进行了表征。将制得的NaYF_(4):Yb,Tm上转换发光纳米粉末用于潜在手印的显现技术中,分别获得了蓝色可见光显现信号和近红外光显现信号,通过光谱表征手段详细考察了手印显现的对比度。实验结果表明,基于NaYF_(4):Yb,Tm的手印纳米荧光显现方法具有对比度强、灵敏度高、选择性好等优势,对于颜色复杂及荧光强烈客体表面潜在手印的显现是一种较为理想的方法。NaYF_(4):Yb,Tm upconversion luminescent nanomaterials were synthesized via a solvothermal approach.The micromorphology,phase composition,near infrared absorption property,and upconversion luminescent property of these nanomaterials were also characterized.The as-synthesized NaYF_(4):Yb,Tm nanopowders were then used as luminescent probes for latent fingerprint development,which could obtain both blue visible and near infrared developing signals.In addition,the contrasts of above two developing pathways were studied in detail,by means of spectral analysis.Experimental results showed that the luminescent development of latent fingerprints using NaYF_(4):Yb,Tm nanomaterials could achieve high contrast,high sensitivity,and high selectivity especially in the case of substrates with complex color and strong fluorescence,which was expected to be an ideal developing method for further use.

关 键 词：上转换 纳米材料 发光材料 稀土 手印显现 

分 类 号：O657.3[理学—分析化学]