Su Yan-Min, Wang Zhi, Zhuang Gui-Lin, Zhao Quan-Qin, Wang Xing-Po, Tung Chen-Ho, Sun Di
Key Lab for Colloid and Interface Chemistry of Education Ministry , School of Chemistry and Chemical Engineering , Shandong University , Jinan , 250100 , People's Republic of China . Email:
College of Chemical Engineering and Materials Science , Zhejiang University of Technology , Hangzhou , 310032 , People's Republic of China.
Chem Sci. 2018 Oct 18;10(2):564-568. doi: 10.1039/c8sc03396j. eCollection 2019 Jan 14.
Controlled trapping atom-precise ultrasmall silver nanoparticles into silver nanoclusters is challenging; thus only limited progress has been made in this area. We are therefore inspired to isolate two novel silver nanoclusters, Ag@Ag ( and ; SD = SunDi), where a novel fcc-structured Ag kernel built from two single-edge opened Ag octahedra by sharing one edge is trapped. The bioctahedral Ag kernel is locked by a pair of MoO anions to form an inner Ag@(MoO) core which is further encapsulated by an outer Ag shell to form three-shell Ag@(MoO)@Ag nanoclusters. Notably, the bioctahedral Ag kernel has not been observed in silver nanoclusters ever before, thus representing a new embryo state of silver nanoparticles. emits in the near infrared (NIR) region ( = 730 nm) at low temperature. This work will deepen our understanding on the atomic-level growth of silver nanoparticles and complicated three-shell self-assembly involving polyoxometalate (POM) and two different silver nanoclusters.
将原子精确的超小银纳米颗粒可控地捕获到银纳米团簇中具有挑战性；因此，该领域仅取得了有限的进展。因此，我们受到启发，分离出了两种新型银纳米团簇，Ag@Ag（和；SD = 孙迪），其中由两个通过共享一条边的单边开口Ag八面体构建的新型面心立方结构的Ag核被捕获。双八面体Ag核被一对MoO阴离子锁定，形成一个内部Ag@(MoO)核，该核进一步被一个外部Ag壳包裹，形成三壳Ag@(MoO)@Ag纳米团簇。值得注意的是，双八面体Ag核以前从未在银纳米团簇中被观察到，因此代表了银纳米颗粒的一种新的胚胎状态。在低温下在近红外（NIR）区域（ = 730 nm）发射。这项工作将加深我们对银纳米颗粒原子级生长以及涉及多金属氧酸盐（POM）和两种不同银纳米团簇的复杂三壳自组装的理解。
