文献类型：期刊文献

英文题名：Stable Radicals in Dihydrophenazine Derivatives-Doped Epoxy Resin for High Photothermal Conversion

作者：Chen, Ziyu[1,2];Su, Yonghao[1,2];Long, Qianxin[1,2];Zhang, Zhiyun[1,2];Su, Jianhua[1,2];Guo, Lifang[1,2]

机构：[1]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Joint Int Res Lab Precis Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2024

卷号：20

期号：43

外文期刊名：SMALL

收录：;EI(收录号：20242516291626);WOS:【SCI-EXPANDED(收录号:WOS:001250869900001)】；

基金：This work was supported by the NSFC/China (22335004, 22004036, and 22175063), the Shanghai Municipal Sci. & the Tech. Major Project (2018SHZDZX03), the 111 Project (B16017), the Shanghai Committee of Sci. & Tech. (17520750100), and the Program for Eastern Scholar Distinguished Professor.

语种：英文

外文关键词：dihydrophenazine; epoxy resin; photothermal conversions; stable radicals

摘要：Organic radicals exhibit great potential in photothermal applications, however, their innate high reactivity with oxygen renders the preparation of stable organic radicals highly challenging. In this work, a series of co-doped radical polymers ares prepared by doping dihydrophenazine derivatives (DPPs) into the epoxy resin matrix. DPPs can form radical species through the electron transfer process, which are further stabilized by the complex 3D network structure of epoxy resin. Experimental results show that the photothermal conversion efficiency is as high as 79.9%, and the temperature can quickly rise to approximate to 130 degrees C within 60 s. Due to the excellent visible light transmittance and mechanical properties of co-doped systems, this study further demonstrates their practical applications in energy-saving solar windows and thermoelectric power generation. This work uses dihydrophenazine derivatives as dopants to build a series of co-doped epoxy resins. Under the UV excitation, dihydrophenazine derivatives generate radicals through an electron transfer process, which are stabilized by epoxy resin chains. The photothermal conversion efficiency of this process reaches 79.9%. This kind of material shows potential applications in transparent greenhouses and photovoltaic conversion. image