Morphology modulation and application of Au(<scp>i</scp>)–thiolate nanostructures

Nie, Hui; Li, Minjie; Hao, Yajiao; Wang, Xudong; Gao, Sheng; Wang, Peng; Ju, Bo; Zhang, Sean Xiao‐An

doi:10.1039/c4ra06500j

Cited by 23 publications

(26 citation statements)

References 52 publications

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“…The synthesis of Au I ‐thiolate is through the reaction of Au III ions and thiol ligands in aqueous phase at boiling temperature . Au III ions were first reduced by thiol ligands to Au I and then coordinated with the residual thiol ligands to form linear coordination polymer chains instantly [equation (1)].…”

Section: Resultsmentioning

confidence: 87%

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Reactions Coupled Self‐ and Co‐Assembly: A Highly Dynamic Process and the Resultant Spatially Inhomogeneous Structure

Yang

et al. 2019

Chemistry An Asian Journal

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Reactions coupled self‐assembly represents a step forward towards biomimetic behavior in the field of supramolecular research. Here, two pH‐dependent reactions of thiol‐disulfide exchange and ligand exchange were used to couple with the self‐assembly of an AuI‐thiolate coordination polymer consisting of two ligands. Thanks to the comparable rates between the reactions and self‐assembly, the compositions of the assemblies change continuously with time, resulting in a highly dynamic assembly process and spatially inhomogeneous structure that are very common in life systems but cannot be easily obtained with one‐pot artificial methods.

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Section: Resultsmentioning

confidence: 87%

“…The synthesis of Au I -thiolate is through the reaction of Au III ions and thiol ligandsi na queous phase at boiling temperature. [37][38][39][40][41][42] Au III ions were first reduced by thiol ligands to Au I [a] S.…”

Section: Resultsmentioning

confidence: 99%

Reactions Coupled Self‐ and Co‐Assembly: A Highly Dynamic Process and the Resultant Spatially Inhomogeneous Structure

Yang

et al. 2019

Chemistry An Asian Journal

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“…Component of Au I ‐thiolate was synthesized by reaction of HAuCl 4 with excess MPA‐Na (4 equivalents) in water at room temperature. Two equivalents of thiols first reduce Au III to Au I and then the remaining thiols coordinate with Au I to form Au I ‐thiolate . In contrast to the Ag I ‐thiolate, Au I ‐thiolate monomers/oligomers (Au I ‐thiolate‐Mono‐/Oligomer) forms amorphous string‐like intermediates which are very small and nearly invisible in TEM images (Au I ‐thiolate‐Strings, yield by dialysis: ≈100 %, Figure S2 a,f).…”

Section: Figurementioning

confidence: 99%

“…Twoe quivalents of thiols first reduce Au III to Au I and then the remaining thiols coordinatew ith Au I to form Au Ithiolate. [30][31][32][33][34][35] In contrastt ot he Ag I -thiolate, Au I -thiolate monomers/oligomers (Au I -thiolate-Mono-/Oligomer) forms amorphous string-like intermediates which are very small andn early invisible in TEM images [34] (Au I -thiolate-Strings, yield by dialysis: % 100 %, Figure S2 a,f). Au I -thiolate-Strings further grow longer, aggregate and crystallize to form sheetsatboilingtemperature (Au I -thiolate-Sheets, separation yield by centrifugation: % 80 %, Figure 1h,S 2b-f).…”

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confidence: 99%

Self‐Templated Assembly of Au^I/Ag^I‐Thiolate Sheets with Central Holes

Dai

Yang

et al. 2019

Chemistry An Asian Journal

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Composite crystalline sheets of AuI/AgI‐thiolate with central holes are achieved by co‐assembly of AgI‐thiolate and AuI‐thiolate in one‐pot without sacrificial template. Both AgI‐thiolate and AuI‐thiolate can separately assemble to lamellar sheets with similar structures, which makes their co‐assembly possible, while the differences in their assembly pathways make the co‐assembly processes highly dynamic and complex. First, a core@shell structure with AgI‐thiolate at the core was formed upon the mixing of the two, then the core@shell structure transformed to a hole@shell structure by dissociation of the core. Finally, some instable hole@shell structures further dissociated and grew on stable ones to generate holed AuI/AgI‐thiolate composite sheets, in which the two components neither have severe phase separation nor blend uniformly at atomic level. By tuning the feeding ratios, the average diameter of the holes can be controlled. Therefore, the work demonstrates the advantage of co‐assembly technique in obtaining complex structurers. The holed sheets can further assemble to porous macroscopic materials and transform to composite metal nanoparticles by pyrolysis.

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“…Nie et al recently reported the synthesis Au(I)-3-mercaptopropionic acid with controllable morphology, including rectangular/square nanosheets, nanobelts, nanostrings, and nanoships. 247 The system consisted of a quaternary emulsion of CTAB, water, cyclohexane and 1-pentanol. With a facile reverse micelle assembly comprising xylene as oil and oleylamine as surfactant, Sim et al successfully produced Ni-Mn layered double hydroxides.…”

Section: Microemulsion Templatesmentioning

confidence: 99%