When was the earliest time for the invention of the explosive detectors? 》In this paper, the fluorescence quenching technology is not specific enough. Recently, search and consult the website of the Ministry of science and technology of China to obtain some information.
From 2005 to 2009, with the support of 863 Program in the field of new materials, Shanghai Institute of Microsystem and information technology of Chinese Academy of Sciences cooperated with Shanghai SANKE Instrument Co., Ltd. to develop SIM series explosive detectors based on fluorescence quenching technology.
After research, we invented molecularly imprinted fluorescence polymer sensing technology, designed and prepared a series of polymer sensing materials which are sensitive and specific to common explosives. These sensing materials with "special function" can emit fluorescence under the ultraviolet irradiation. If there are explosives adsorbed on the surface of polymer nanofilm, it will lead to the rapid quenching of polymer fluorescence. This fluorescence intensity It is easy to detect the change of the degree with a special fluorophotometer. Like a police dog, the bomb detector can smell hidden explosives or traces of residual explosives on the surface, which is more sensitive than a police dog by one order of magnitude. It does not harm the operator and the detected object, pollute the environment, or form a secondary hazard source.
At present, fluorescence quenching has been used in civil aviation, railway and other rail transit, large-scale activities.
The earliest invention time of the detector should be between 2005 and 2009, and then the publication should be after the document was published on the website of the Ministry of science and technology of the people's Republic of China on November 26, 2009.