Fluorescent compound for detection of isocyanate substances, preparation method and use thereof as test-paper-type detection probe
US11427532B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2019 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Oct 28, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2211/1014
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a fluorescent compound for the detection of isocyanate substances, a preparation method therefor and use thereof as a test-paper-type detection probe. The fluorescent compound is 2,4-di(((4′-(diphenylamino)-[1,1′-biphenyl]-4-yl)imino)methyl)phenol. The fluorescent compound is prepared by means of a one-step method. The fluorescent compound has simple and convenient preparation with high yield, and is capable of making a rapid and specific response to isocyanate substances. Moreover, the fluorescence intensity of the fluorescent compound will enhance with the increase of the isocyanate concentration. The fluorescent compound can be made into a portable test-paper-type probe for the detection of isocyanate substances in air, and can achieve the visual detection of volatile isocyanate gases. The probe has an aggregation-induced emission effect, and thus it has higher fluorescence quantum yield when using a test-paper-type probe for detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.