Title:
FLUORIDE ION COLOR-SENSING POLYIMIDE FILM, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/143265
Kind Code:
A1
Abstract:
A fluoride ion color-sensing polyimide film, a preparation method therefor and an application thereof; the preparation method for a fluoride ion color-sensing polyimide film comprises: mixing an aromatic diamine monomer and an aromatic dianhydride monomer in a strong polar aprotic organic solvent, adding a catalyst, vacuuming at room temperature-introducing argon, repeating the foregoing multiple times, and then reacting under the protection of argon to obtain a polyimide solution; then preparing fibrous polyimide; dissolving the fibrous polyimide in a strong polar aprotic organic solvent, stirring sufficiently for dissolving and then applying same evenly on a clean glass plate, removing the solvent, cooling, then soaking in hot water to strip a film so as to obtain the fluoride ion color-sensing polyimide film. The described polyimide film containing hydroxyfluorene may be directly cut into sheets for use such that it is easy to fabricate sensors; the present invention is used for the determination of fluoride ions, wherein sensitivity reaches 10-4 mol/L, and selectivity is high.
Inventors:
LIU SHUMEI (CN)
WU YANCHENG (CN)
ZHAO JIANQING (CN)
HUANG HAOHAO (CN)
WU YANCHENG (CN)
ZHAO JIANQING (CN)
HUANG HAOHAO (CN)
Application Number:
PCT/CN2019/112047
Publication Date:
July 16, 2020
Filing Date:
October 18, 2019
Export Citation:
Assignee:
UNIV SOUTH CHINA TECH (CN)
International Classes:
C08G73/10; C08J5/18; G01N21/77; G01N21/78; C08L79/08
Foreign References:
| CN109796613A | 2019-05-24 | |||
| CN104130408A | 2014-11-05 | |||
| CN108676162A | 2018-10-19 | |||
| CN101948569A | 2011-01-19 | |||
| US20110275781A1 | 2011-11-10 | |||
| US5013840A | 1991-05-07 | |||
| JP2010043048A | 2010-02-25 |
Attorney, Agent or Firm:
GUANGZHOU HUAXUE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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