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Issue 30, 2018
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Crystalline nanoscale assembly of gold clusters for reversible storage and sensing of CO2via modulation of photoluminescence intermittency

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Abstract

We report that zinc mediated crystalline nanoscale assemblies of atomic gold nanoclusters (NCs) were able to reversibly store gaseous carbon dioxide with adsorption capacity of 1.79 mM g−1 at 20 °C and 20 bar. Importantly, carbon dioxide induced reversible change in photoluminescence intermittency of the assembled clusters indicated CO2 storage using confocal laser scanning microscopy. Au14 NCs, having a single valued on time, exhibited a wide distribution of off time blinking profiles that could be fitted with truncated power law. However, blinking of ligand-stabilized Au14 NCs was eliminated following the formation of zinc ion mediated three dimensional crystalline assemblies of Au14 NCs. In the presence of carbon dioxide, single crystalline assembled nanoclusters showed intermittency behavior of the original clusters. However, upon desorption of carbon dioxide, the non-blinking nature of the crystalline assembly was restored.

Graphical abstract: Crystalline nanoscale assembly of gold clusters for reversible storage and sensing of CO2via modulation of photoluminescence intermittency

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Publication details

The article was received on 08 May 2018, accepted on 04 Jul 2018 and first published on 04 Jul 2018


Article type: Paper
DOI: 10.1039/C8TC02225A
Citation: J. Mater. Chem. C, 2018,6, 8205-8211
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    Crystalline nanoscale assembly of gold clusters for reversible storage and sensing of CO2via modulation of photoluminescence intermittency

    S. Basu, S. Bhandari, U. N. Pan, A. Paul and A. Chattopadhyay, J. Mater. Chem. C, 2018, 6, 8205
    DOI: 10.1039/C8TC02225A

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