文献类型：期刊文献

中文题名：Stimulus-responsive water soluble synthetic nanographene

作者：Shuang Ma[1];Yanpeng Zhu[1];Weitao Dou[2];Ying Chen[1];Xiaopeng He[2];Jiaobing Wang[1]

机构：[1]School of Chemistry,Sun Yat-Sen University,Guangzhou 510275,China;[2]School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China

年份：2021

卷号：64

期号：4

起止页码：576

中文期刊名：Science China Chemistry

外文期刊名：中国科学（化学英文版）

收录：Scopus;CSCD:【CSCD2021_2022】；PubMed;

基金：supported by the National Natural Science Foundation of China(21871298,91956118);the Sun Yat-Sen University。

语种：英文

中文关键词：synthetic nanographene;atomically precise;thermoresponsive;photoresponsive;LCST;photothermal effect

摘要：Nanographenes(NGs)are exceptionally hydrophobic.They are insoluble in water,preventing the exploration and utilization of their photophysical properties under aqueous conditions.This work discloses an atomically precise water-soluble synthetic NG1,featuring a 2 nm sp^(2) carbon skeleton appended with 12 branched triethylene glycol chains.It synergistically combines low critical solution temperature(LCST)behavior and a photothermal effect to create the first thermo-and photo-responsive atomically precise NG functioning in an aqueous solution.The LCST behavior can be attributed to a delicate balance of hydrophobic-hydrophilic interactions,providing a sensitive thermal response to changes over a temperature range of physiological interest(close to 37℃).Moreover,1 has considerable photothermal conversion capability,with irradiation of 1 in water by red or near infrared light increasing the solutions temperature to above the clouding point within seconds,leading to a reversible clear-to-turbid transition over many cycles without evident fatigue.