标题：Amphiphilicity Regulation of Ag-I Nanoclusters: Self-Assembly and Its Application as a Luminescent Probe
作者：Shen, Jinglin; Wang, Zhi; Xia, Congxin; Sun, Di; Yuan, Shiling; Xin, Xia
作者机构：[Shen, Jinglin; Wang, Zhi; Sun, Di; Yuan, Shiling; Xin, Xia] Shandong Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 更多
通讯作者：Sun, Di;Sun, D;Yuan, SL;Xin, X;Xin, X
通讯作者地址：[Sun, D; Yuan, SL; Xin, X]Shandong Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Shandong, Peoples R China; 更多
来源：CHEMISTRY-A EUROPEAN JOURNAL
关键词：aggregation; amphiphilicity; self-assembly; sensors; nanoclusters
摘要：Research on the self-assembly of various amphiphilic molecules is a relatively new research area and of great significance. However, new kinds of metal-nanocluster (NC)-based amphiphilic molecule have rarely been explored. Herein, hydrophobic cation 1-hexadecyl-3-methylimidazoliurn (C(16)min(+)) was chosen to modify hydrophilic (NH4)(6)[(Ag-6(mna)(6))] (Ag-6-NCs, H(2)mna =2-mercaptonicotinic acid) and Ag-6@C-16 mim-NCs were obtained. Ag-6@C(16)mim-NCs displayed thermotropic liquid crystal and thermofluorescent properties. Moreover, the Ag-6@C-16 mim-NCs exhibits benign amphiphilicity, and it can self-assemble into ordered nano- sheets and nanorods through aggregation in water/dimethyl sulfoxide (DMSO) binary solvent mixtures, whereas single Ag-6-NCs do not. Meanwhile, the Ag-6@C(16)mim-NCs also displays aggregation-induced emission properties owing to the restriction of intramolecular vibrations of the capping ligands. Furthermore, the luminescent aggregates could detect arginine selectively with the detection limit at 28 mu M. This study introduces a new kind of metal-NC-based amphiphilic molecule in a supramolecular self-assembly field, and they have potential to be used as optical materials in applied research.