The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2019
Filed:
Jan. 25, 2017
Zhejiang University, Hangzhou, Zhejiang Province, CN;
Qian Zhao, Zhejiang Province, CN;
Jingjun Wu, Zhejiang Province, CN;
Tao Xie, Zhejiang Province, CN;
Di Chen, Zhejiang Province, CN;
ZHEJIANG UNIVERSITY, Hangzhou, CN;
Abstract
The present invention discloses a freezing-illumination method for preparing porous gels, comprising the steps of: (a) synthesizing the gels containing dynamic exchangeable bonds; (b) illuminating the gels under frozen state by certain wavelength light source; (c) elevating the temperature and melt the ice crystals within the gels to get the porous structure. The dynamic exchangeable bonds existing in the gels include double/multi-sulfur bond, hydrazine bond, boronic ester bond. Catalyst is also included in the gel composition to activate the bond exchange reactions under illumination. This new method for preparing porous gels is easy to operate and suitable for most kinds of gels. Meanwhile, it can spatially control the pore structure within the gels by local illumination.