Different Silver Nanoparticles in One Crystal: Ag210(iPrPhS)71(Ph3P)5Cl and Ag211(iPrPhS)71(Ph3P)6Cl

• Published in: Angewandte Chemie Vol. 131; no. 1; pp. 201 - 205
• Main Authors: Liu, Jun‐Yan, Alkan, Fahri, Wang, Zhi, Zhang, Zhen‐Yi, Kurmoo, Mohamedally, Yan, Zier, Zhao, Quan‐Qin, Aikens, Christine M., Tung, Chen‐Ho, Sun, Di
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 02.01.2019
• Subjects: Chemistry; Gold; Kern-Schale-Strukturen; Kokristallisation; Metal shells; Metals; Nanoparticles; Oberflächenplasmonen; Phosphine; Silber-Nanopartikel; Silver; Thiole; X-ray diffraction
• ISSN: 0044-8249; 1521-3757
• DOI: 10.1002/ange.201810772

Two pure silver nanoparticles (Ag210(iPrPhS)71(Ph3P)5Cl and Ag211(iPrPhS)71(Ph3P)6Cl labeled as SD/Ag210 and SD/Ag211 (SD=SunDi), were found to co‐crystallize in forming compound 1. Single‐crystal X‐ray diffraction (SCXRD) revealed that they differ by only one Ag(PPh3). Their four‐shell nanoparticles consist of three pure Ag metal shells (Ag19@Ag52@Ag45) shielded by a silver‐organic Ag89(iPrPhS)71Cl[Ag(Ph3P)]n outermost shell. The number (n) of Ag(Ph3P) is five for SD/Ag210 and six for SD/Ag211. The pseudo‐fivefold symmetric Ag nanoparticles exhibit surface plasmon absorption similar to a true metallic state but at the nanoscale. This work exemplifies the important effects of phosphine in stabilizing large silver nanoparticles; and offers a platform to investigate the origin of differences in nanoscale metal materials, even differing by only one metal atom; it also sheds light on the regioselective binding of auxiliary Ph3P on the surface of silver nanoparticles. Ein Ag mehr oder weniger … Zwei verschiedene Silber‐Nanopartikel, Ag210(iPrPhS)71(Ph3P)5Cl und Ag211(iPrPhS)71(Ph3P)6Cl mit einem zusätzlichen Silberzentrum, kristallisieren gemeinsam in einem Einkristall. Beide Silber‐Nanopartikel haben das vierschalige Ag19@Ag52@Ag45@Ag89‐Matrjoschka‐Motiv mit gleich vielen iPrPhS−‐ und Cl−‐Liganden.