Self-assembly of thiolate-protected silver coordination polymers regulated by POMs. Issue 20 (13th May 2020)

• Record Type: Journal Article
• Authors: Li, Ya-Hui; Wang, Zhao-Yang; Ma, Bing; Xu, Hong; Zang, Shuang-Quan; Mak, Thomas C. W.
• Is Part Of: Nanoscale. Volume 12:Issue 20(2020)
• Page Start: 10944
• Page End: 10948
• Publication Date: 2020-05-13
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/d0nr00342e
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : The thiolate-protected silver coordination polymers connected by Lindquist-type POM shows good stability. The chain-like Ag10 -Mo6 exhibits green photoluminescence. Two-dimensional Ag18 -Mo6 was observed to contain a unique 20-membered cycle-Ag10 S10 . Abstract : Two polyoxometalate (POM)-based thiolate-protected silver coordination polymers were obtained using different Lindquist-type POM precursors under the same conditions. [Ag10 (S t Bu)6 (CH3 CN)8 (Mo6 O19 )2 ·2CH3 CN] n (abbreviated as Ag10 -Mo6 ) was observed to feature chain-like structures containing Ag10 clusters linked by [Mo6 O19 ] 2− anions through Ag–O bonds and to exhibit unprecedented green photoluminescence at room temperature. Interestingly, [Ag18 (S t Bu)12 (CH3 CN)5 (Mo6 O19 )2 ·Mo6 O19 ·2CH3 CN] n (abbreviated as Ag18 -Mo6 ) was found to contain 20-membered cycle-Ag10 S10 each with a diameter of approximately 11.382 Å and constructed from alternating silver and sulfur atoms and interconnected into an elegant Ag–S sheet by interstitial the Ag3 S t Bu and AgCH3 CN motifs, and to also contain [Mo6 O19 ] 2− counter ions filling in the spaces made by the cycle-Ag10 S10 and strengthening the structure by forming Ag–O bonds. Such a stacking structure for thiolate-protected silver compounds has not been previously reported.