Journal
ACS SENSORS
Volume 1, Issue 2, Pages 179-184Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssensors.5b00182
Keywords
aggregation-induced emission; fluorescent sensor; amine vapors; light-up detection
Funding
- Key Project of the Ministry of Science and Technology of China [2013CB834702]
- National Science Foundation of China [21490571, 21222402, 21174120]
- Fundamental Research Funds for the Central Universities [2015ZY013, 2015ZZ104]
- Research Grants Council of Hong Kong [604711, 602212, HKUST2/CRF/10]
- Guangdong Innovative Research Team Program [201101C0105067115]
- China Postdoctoral Science Foundation Grant [2015M580716]
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Amines play vital roles in agricultural, pharmaceutical, and food industries, but volatile amine vapors are serious threats to human health. Previously reported fluorescent sensors for amine vapor detection usually suffer from aggregation-caused quenching (ACQ) effect and need to be dispersed in solution or matrix materials. Herein, based on the fluorogen of 2-(2-hydroxyphenyl)quinazolin-4(3H)-one (HPQ) with aggregation-induced emission (ME) properties, we have developed a fluorescent sensor HPQ-Ac for light-up detection of amine vapors through aminolysis reaction. The portable HPQ-Ac sensor can be easily prepared by directly depositing on filter paper, and it can only light up via exposure to amine vapors among various volatile organic compounds. Taking advantage of its portability and high sensitivity for amine vapors, HPQ-Ac sensor can also be used for food spoilage detection and fluorescent invisible ink.
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