Turn-on circularly polarized luminescence by amphiphilic Schiff bases
作者单位：Henan Provincial Key Laboratory of Surface &Interface ScienceZhengzhou University of Light Industry Beijing National Laboratory for Molecular ScienceCAS Key Laboratory of Colloid Interface and Chemical ThermodynamicsInstitute of ChemistryChinese Academy of Science
会议名称：《河南省化学会2018年学术年会》
会议日期：2018年
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学]
关 键 词：Schiff bases Self-assembly Circularly polarized luminescence Chiral Aluminum ion
摘 要：Amphiphilic naphthalene-substituted Schiff bases containing a glutamide moiety were designed and utilized to selectively sense aluminum *** various metal ions were added into the ethanol solution of the amphiphilic Schiff bases,most ions did not change the luminescence property,Mg,Znand Alshowed enhancement of the emission of Schiff *** for Al,amphiphilic Schiff base exhibited a significant fluorescence enhancement at465nm due to the inhibition of the photo induced electron transfer(PET)and excited-state intramolecular proton transfer(ESIPT).The 1:1 binding stoichiometry between amphiphilic Schiff bases and Alwas corroborated by the Job’s plot and the ESI-MS *** the Schiff bases contained a chiral center,the metal complexes of Mg,Znand Alexhibited induced supramolecular chirality,which was characterized by the obvious negative Cotton effect in Circular Dichroism(CD)***,only the Alion coordinated Schiff base showed Circularly Polarized Luminescence(CPL),implying Alselectively turn-on CPL of amphiphilic Schiff *** work presents a simple way to fabricate chiral system emitting CPL based on aluminum ion coordination.