Stimulus-responsive water soluble synthetic nanographene  

作　　者：Shuang Ma Yanpeng Zhu Weitao Dou Ying Chen Xiaopeng He Jiaobing Wang 

机构地区：[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

出　　处：《Science China Chemistry》2021年第4期576-580,共5页中国科学（化学英文版）

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

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.

关 键 词：synthetic nanographene atomically precise THERMORESPONSIVE PHOTORESPONSIVE LCST photothermal effect 

分 类 号：TQ127.11[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程]