文献类型：期刊文献

英文题名：POSS: A Morphology-Tuning Strategy To Improve the Sensitivity and Responsiveness of Dissolved Oxygen Sensor

作者：Wang, Shuwen;Gu, Kaizhi;Yan, Chenxu;Guo, Zhiqian[1];Zhao, Ping;Zhu, Wei-Hong[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Joint Int Res Lab Precis Chem & Mol Engn, Feringa Nobel Scientist Joint Res Ctr, Inst Fine Chem,Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2019

卷号：58

期号：19

起止页码：7761

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20192006916437);WOS:【SCI-EXPANDED(收录号:WOS:000468368100008)】；

基金：This work was supported by National Key Research and Development Program (2016YFA0200300 and 2017YFC0906902), NSFC Science Center Program (21788102) and Creative Research Groups (21421004), NSFC/China (21636002 and 21622602), Shanghai Municipal Science and Technology Major Project (2018SHZDZX03), National Postdoctoral Program for Innovative Talents (BX201700075) and Program of Introducing Talents of Discipline to Universities (B16017).

语种：英文

外文关键词：Morphology - Platinum compounds - Food processing

摘要：Dissolved oxygen (DO) plays a crucial role in environment, food processing, and biotechnology. Although several physical-doping DO probes have been developed, a sensitive and reliable sensor for real-time and noninvasive DO detection in bioprocess is still challenging. Here we demonstrate a morphology-tuning strategy to improve the sensitivity and responsiveness of DO polymeric sensors (P(Pt-TPP-TFE-Ad) and P(P(pt-TPP-TFE-POSS)) by decorating them with the same platinum(II) porphyrins and different morphology-tunable moieties in a supporting matrix. Experimental results show that the sensitivity and response of sensors increase with size effect of the morphology-tunable moiety because the bulky morphology-tunable moiety facilitates the formation of an interconnected and porous network that can promote oxygen permeability. Additionally, P(Pt-TPP-TFE-POSS) features excellent linear Stern-Volmer quenching, superior stability, and reversible response, thereby permitting the real-time and noninvasive quantification of DO during cephalosporin C fermentation. Our work offers an ideal tool for online sensing of DO in industrial and biological applications.