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A general strategy for colloidal stable ultrasmall amorphous mineral clusters in organic solvents

A general strategy for colloidal stable ultrasmall amorphous mineral clusters in organic solvents

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Prüfsumme: MD5:df875c563d8eb56d43ba345592081752

SUN, Shengtong, Denis GEBAUER, Helmut CÖLFEN, 2017. A general strategy for colloidal stable ultrasmall amorphous mineral clusters in organic solvents. In: Chemical Science. 8(2), pp. 1400-1405. ISSN 2041-6520. eISSN 2041-6539

@article{Sun2017gener-35739, title={A general strategy for colloidal stable ultrasmall amorphous mineral clusters in organic solvents}, year={2017}, doi={10.1039/C6SC02333A}, number={2}, volume={8}, issn={2041-6520}, journal={Chemical Science}, pages={1400--1405}, author={Sun, Shengtong and Gebauer, Denis and Cölfen, Helmut} }

While nature exerts precise control over the size and chemical composition of minerals, this is still a challenging task for artificial syntheses. Despite its significance, until now, there are still no reports on colloidal mineral nanoparticles in the subnanometer range. Here we developed a general gas diffusion strategy using 10,12-pentacosadiynoic acid as a ligand and ethanol as a solvent to fabricate stable amorphous mineral clusters with a core size of less than 2 nm. First discovered for CaCO<sub>3</sub>, the method was successfully extended to produce monolayer protected clusters of MgCO<sub>3</sub>, SrCO<sub>3</sub>, Eu<sub>2</sub>(CO<sub>3</sub>)<sub>3</sub>, Tb<sub>2</sub>(CO<sub>3</sub>)<sub>3</sub>, Ce<sub>2</sub>(CO<sub>3</sub>)<sub>3</sub>, Ca<sub>x</sub>(PO<sub>4</sub>)<sub>y</sub>, CaC<sub>2</sub>O<sub>4</sub> and their hybrid minerals, Ca<sub>x</sub>Mg<sub>y</sub>(CO<sub>3</sub>)<sub>z</sub> and Ca<sub>x</sub>(CO<sub>3</sub>)<sub>y</sub>(PO<sub>4</sub>)<sub>z</sub>. All the mineral clusters can be well dispersed in organic solvents like toluene, and are stable for a long period without further crystallization. Our work paves a way for the artificial synthesis of colloidal mineral clusters, which may have various uses in both fundamental research and industry. Sun, Shengtong 2016-10-26T13:39:18Z Cölfen, Helmut 2017 Cölfen, Helmut Sun, Shengtong Gebauer, Denis A general strategy for colloidal stable ultrasmall amorphous mineral clusters in organic solvents Gebauer, Denis eng 2016-10-26T13:39:18Z

Dateiabrufe seit 26.10.2016 (Informationen über die Zugriffsstatistik)

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