Preparation of a cross-linked gelatin/bacteriorhodopsin film and its photochromic properties  

作　　者：WANG YaZhuo WU Jia MA DeWang DING JianDong 

机构地区：[1]Key Laboratory of Molecular Engineering of Polymers of Ministry of Education,Department of Macromolecular Science,Fudan University,Shanghai 200433,China

出　　处：《Science China Chemistry》2011年第2期405-409,共5页中国科学(化学英文版)

基　　金：supported by the National Basic Research Rrogram of China (973 Program,2009CB930000);National Natural Science Foundation of China (21034002)

摘　　要：Bacteriorhodopsin (BR) is a photochromic membrane protein isolated from a strain of halobacteria.Embedment of BR into a polymeric matrix enables the application of the photoactive protein as an optical material.In this work,a chemically crosslinked BR/gelatin film was prepared.The cross-linked film was found to be highly stable even under extreme alkaline or detergent circumstance while BR maintained its bioactivity.The treatments of base and detergents also led to dramatic prolongation of the lifetime of M photoproduct,which might be beneficial for potential applications such as information storage.The BR/gelatin film was demonstrated to tentatively record a simple pattern.Bacteriorhodopsin (BR) is a photochromic membrane protein isolated from a strain of halobacteria. Embedment of BR into a polymeric matrix enables the application of the photoactive protein as an optical material. In this work, a chemically cross- linked BR/gelatin film was prepared. The cross-linked film was found to be highly stable even under extreme alkaline or detergent circumstance while BR maintained its bioactivity. The treatments of base and detergents also led to dramatic prolongation of the lifetime of M photoproduct, which might be beneficial for potential applications such as information storage. The BR/gelatin film was demonstrated to tentatively record a simple pattern.

关 键 词：BACTERIORHODOPSIN photochromic protein natural macromolecule functional polymer photoresponsive materials 

分 类 号：Q935[生物学—微生物学]