Department of Chemistry, Panjab University, Chandigarh 160014, India.
Department of Chemistry, Terminal Ballistics Research Laboratory (TBRL), Defence Research and Development Organisation, Chandigarh 160003, India.
Anal Methods. 2022 Feb 17;14(7):700-707. doi: 10.1039/d1ay01977e.
A luminescent 3D metal-organic framework [Zn(NDA)(AMP)] = PUC1 (where, NDA = naphthalene-2,6-dicarboxylic acid and AMP = 4-aminomethyl pyridine) was synthesized under solvothermal conditions. The synthesized 3D framework was fully characterized with the help of different analytical techniques such as SCXRD, FTIR, TGA, PXRD, SEM, BET, PUC1 exhibited a strong emission peak at 371 nm when excited at 290 nm and the resulting emission was efficiently quenched in the presence of various organic explosive substances like pentaerythritol tetranitrate (PETN), 2,4,6-trinitrophenyl--methylnitramine (Tetryl), trinitrotoluene (TNT), 1,3,5-trinitroperhydro-1,3,5-triazine (RDX), and 1,3,5,7-tetranitro-1,3,5,7-tetrazoctane (HMX). PUC1 revealed highly sensitive and selective detection of PETN and Tetryl with high quenching constant values of 0.1 × 10 and 0.12 × 10 M and low detection limits of 0.315 and 0.404 μM respectively. The strong luminescent properties of PUC1 lead to its successful application in the development of latent fingermarks on different non-porous surfaces using the powder dusting method. The accuracy and applicability of the synthesized material were determined by developing fingerprints by using secretions from eccrine and apocrine glands on a glass slide and various other surfaces, followed by dusting the surfaces. The results so obtained were found to be very accurate and promising.
在溶剂热条件下合成了发光 3D 金属有机骨架 [Zn(NDA)(AMP)] = PUC1（其中，NDA = 萘-2,6-二羧酸，AMP = 4-氨甲基吡啶）。通过不同的分析技术，如 SCXRD、FTIR、TGA、PXRD、SEM 和 BET 对合成的 3D 骨架进行了全面表征。PUC1 在 290nm 激发下在 371nm 处表现出强发射峰，在存在各种有机爆炸物质（如季戊四醇四硝酸酯（PETN）、2,4,6-三硝基苯甲硝胺（Tetryl）、三硝基甲苯（TNT）、1,3,5-三硝基-1,3,5-三嗪（RDX）和 1,3,5,7-四硝基-1,3,5,7-四氮杂辛烷（HMX））时，发射得到有效猝灭。PUC1 对 PETN 和 Tetryl 的检测具有高度的灵敏性和选择性，猝灭常数值分别为 0.1×10 和 0.12×10 M，检测限分别为 0.315 和 0.404 μM。PUC1 具有较强的发光性能，成功应用于粉末撒粉法在不同非多孔表面上开发潜伏指纹。通过在载玻片和各种其他表面上使用汗腺和顶泌腺分泌物开发指纹，并对表面进行撒粉，确定了合成材料的准确性和适用性。所得到的结果非常准确且有前途。
