A kind of linear bibranch azobenzene polymer and its preparation method and application
A double-branched azobenzene polymer technology, which is applied in the field of linear double-branched azobenzene polymers and its preparation, can solve the problems of restricting large-scale use, poor solubility, and difficulty in film formation, and achieve high molecular weight and film-forming properties. Good, long half-life effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0036] 1) Dissolve 2.740g of 4-aminobenzoic acid and 1.380g of sodium nitrite in 50ml of deionized water, then slowly add 40ml of 2mol / L hydrochloric acid aqueous solution and place it in an ice bath and stir to prepare the diazonium salt. The prepared diazonium salt solution was slowly added dropwise into 20 mmol of aniline hydrochloric acid aqueous solution under ice bath condition, the pH value was adjusted to 6-7, stirred in ice bath for 6 h under the protection of argon, and reacted overnight. The obtained crude product was washed several times with deionized water and absolute ethanol, and then chromatographic separation was performed using 5 μm silica gel as a stationary phase and ethyl acetate / n-hexane as an eluent. The obtained component was distilled under reduced pressure and dried under vacuum to obtain Azo (4-((4-phenylaniline) diazenylbenzoic acid).12mmol Azo and 13mmolNaOH were added to 30ml 1:1DMF / H 2 O mixed solution. 12.5 mmol of di-tert-butyl dicarbonate wa...
Embodiment 2
[0041] 1) Dissolve 2.740g of 4-aminobenzoic acid and 1.380g of sodium nitrite in 50ml of deionized water, then slowly add 40ml of 2mol / L hydrochloric acid aqueous solution and place it in an ice bath and stir to prepare the diazonium salt. The prepared diazonium salt solution was slowly added dropwise into 20 mmol of aniline hydrochloric acid aqueous solution under ice bath condition, the pH value was adjusted to 6-7, stirred in ice bath for 6 h under the protection of argon, and reacted overnight. The obtained crude product was washed several times with deionized water and absolute ethanol, and then chromatographic separation was performed using 5 μm silica gel as a stationary phase and ethyl acetate / n-hexane as an eluent. The resulting fraction was distilled under reduced pressure and dried under vacuum to obtain Azo. Add 12mmol Azo and 13mmol NaOH to 30ml 1:1DMF / H 2 O mixed solution. 12.5 mmol of di-tert-butyl dicarbonate was added dropwise under ice-bath conditions. Ret...
Embodiment 3
[0046] 1) Dissolve 2.740g of 4-aminobenzoic acid and 1.380g of sodium nitrite in 50ml of deionized water, then slowly add 40ml of 2mol / L hydrochloric acid aqueous solution and place it in an ice bath and stir to prepare the diazonium salt. The prepared diazonium salt solution was slowly added dropwise into 20 mmol of aniline hydrochloric acid aqueous solution under ice bath condition, the pH value was adjusted to 6-7, stirred in ice bath for 6 h under the protection of argon, and reacted overnight. The obtained crude product was washed several times with deionized water and absolute ethanol, and then chromatographic separation was performed using 5 μm silica gel as a stationary phase and ethyl acetate / n-hexane as an eluent. The resulting fraction was distilled under reduced pressure and dried under vacuum to obtain Azo. Add 12mmol Azo and 13mmol NaOH to 30ml 1:1DMF / H 2 O mixed solution. 12.5 mmol of di-tert-butyl dicarbonate was added dropwise under ice-bath conditions. Ret...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More