标题:Structure, solution assembly, and electroconductivity of nanosized argento-organiccluster/framework templated by chromate
作者:Li, Xiao-Yu; Su, Hai-Feng; Kurmoo, Mohamedally; Tung, Chen-Ho; Sun, Di; Zheng, Lan-Sun
作者机构:[Li, Xiao-Yu; Tung, Chen-Ho; Sun, Di] Shandong Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R Chin 更多
通讯作者:Sun, Di
通讯作者地址:[Sun, D]Shandong Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China.
来源:NANOSCALE
出版年:2017
卷:9
期:16
页码:5305-5314
DOI:10.1039/c7nr00732a
摘要:In view of elucidating potential structures and assembly mechanism of silver clusters and silver clusterbased metal-organic frameworks, we prepared four argento-organic-clusters/frameworks where the structures were directed by chromate in the presence of different thiolates. All four structures with (BuC6H4S-)-Bu-t, (SBu-)-Bu-i, and (SPr-)-Pr-i consist of three core-shells, an inner CrO42-, an intermediate Ag-S aggregate and finally the protective organic moieties. {(HNEt3)(3)[Ag(CrO4)(4)@Ag-46((SC6H4Bu)-Bu-t)(24)(CF3COO)(18) (DMF)(4)]} (1) is a supertetrahedron with an inner Ag(CrO4) 4 tetrahedron shelled by four fused Ag11.5S6 lobes. [(CrO4)(5)@Ag-40((SBu)-Bu-i)(27)(CF3COO)(3)](n) (2) is an undulated snake-like tube housing the infinite CrO4 2tetrahedra. [(CrO4)(2)@Ag-41(SiBu)(30)(NO3)(3)(CN)(4)](n) (3) forms an uncommon 7-connected kwh network incorporating hexagonal layers of Ag-19((SBu)-Bu-i)(15) balls with a single inner CrO(4)(2-)connected by another Ag atom. Both enantiomeric chiral qtz frameworks of [CrO4@Ag-20(SiPr)(10)(Cr2O7)(2)(COOCF3)(4)(DMF)(4)] n (4) were structurally characterized. In 4, Cr2O7 2-connects the Ag20(SiPr) 10 clusters with a trapped CrO42- into a 3D quartz (qtz) structure, where the spherical cluster acts like oxygen and Cr2O72-takes the place of Si in SiO2. Electrospray ionization mass spectrometry (ESI-MS) analysis of the reaction solutions of 1-4 clearly indicated that (i) the Ag(CrO4)(4)@Ag-46 core of 1 can retain its molecular structure in the solution and (ii) the chromate-templated polynuclear silver-thiolate species in solution are important building blocks to construct the 1D or 3D motif for 2-4. The electrochemistry in sulfuric acid and enhancement of the electrical conductivity upon I-2 doping have also been reported.clusterbased
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:8
Scopus被引频次:7
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018731485&doi=10.1039%2fc7nr00732a&partnerID=40&md5=c9a1bbf78def1dd54eb203c9f12ef0c9
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