Direct Blue Light-Induced Autocatalytic Oxidation of o-Phenylenediamine for Highly Sensitive Visual Detection of Triaminotrinitrobenzene

Wang, Jinhu1; Li, Hua3; Cai, Yanhua2; Wang, Dunju1; Bian, Liang4; Dong, Faqin4; Yu, Haili1; He, Yi1

2019-05-07

10.1021/acs.analchem.9b00759

ANALYTICAL CHEMISTRY   影响因子和分区

0003-2700

1520-6882

o-Phenylenediamine (OPD)-based chromogenic reactions are worthy tools for the development of visual colorimetric assays. The chromogenic reactions are usually triggered by various oxidants, which is not easily tunable and incompatible with some analytes. Herein, we report that direct blue light irradiation can induce the autocatalytic oxidation of OPD to generate 2,3-diaminophenazine (oxidized-state OPD, oxOPD). The autocatalytic photo-oxidation reaction mechanism of OPD is mainly ascribed to the resonant energy transfer between ectronically excited oxOPD and dissolved oxygen to form singlet state oxygen with a high oxidation capacity, which accelerates the oxidation of OPD. We demonstrate that under neutral and alkaline environment, the photoinduced autocatalytic oxidation of OPD is able to be further enhanced by triaminotrinitrobenzene (TATB) explosive because of its inhibition effect on the aggregation caused quenching phenomenon of oxOPD. On this basis, a straightforward visual colorimetric assay for TATB with a tunable dynamic range is developed. This assay is capable of detecting TATB explosive concentrations as low as 2.7 nM. Notably, the obvious color change after addition of TATB enables a naked-eye readout with the lowest detectable TATB concentrations of 60 nM.

SCI ; EI

英语

NI期刊

其他

China Aerodynamics Research and Development Center Foundation[JPD20170142]

Chemistry

Chemistry, Analytical

WOS:000467642100094

AMER CHEMICAL SOC

20192006912025

Aromatic compounds ; Color ; Colorimetry ; Dissolved oxygen ; Energy transfer ; Excited states ; Explosives

Light/Optics:741.1 ; Chemical Reactions:802.2 ; Organic Compounds:804.1 ; Atomic and Molecular Physics:931.3 ; Optical Variables Measurements:941.4

CHEMISTRY

Web of Science

1.Southwest Univ Sci & Technol, Sichuan Coinnovat Ctr New Energet Mat, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Peoples R China
2.Chongqing Univ Arts & Sci, Chongqing Key Lab Environm Mat & Remediat Technol, Yongchuan 402160, Peoples R China
3.Southern Univ Sci & Technol, Mat Characterizat & Preparat Ctr, Shenzhen 518055, Peoples R China
4.Southwest Univ Sci & Technol, Minist Educ, State Key Lab Cultivat Base Nonmetal Composites &, Key Lab Solid Waste Treatment & Resource Recycle, Mianyang 621010, Sichuan, Peoples R China

Wang, Jinhu,Li, Hua,Cai, Yanhua,et al. Direct Blue Light-Induced Autocatalytic Oxidation of o-Phenylenediamine for Highly Sensitive Visual Detection of Triaminotrinitrobenzene[J]. ANALYTICAL CHEMISTRY,2019,91(9):6155-6161.

Wang, Jinhu.,Li, Hua.,Cai, Yanhua.,Wang, Dunju.,Bian, Liang.,...&He, Yi.(2019).Direct Blue Light-Induced Autocatalytic Oxidation of o-Phenylenediamine for Highly Sensitive Visual Detection of Triaminotrinitrobenzene.ANALYTICAL CHEMISTRY,91(9),6155-6161.

Wang, Jinhu,et al."Direct Blue Light-Induced Autocatalytic Oxidation of o-Phenylenediamine for Highly Sensitive Visual Detection of Triaminotrinitrobenzene".ANALYTICAL CHEMISTRY 91.9(2019):6155-6161.