Golden Opportunity: A Clickable Azide-Functionalized [Au25(SR)18]− Nanocluster Platform for Interfacial Surface Modifications | Zendy

Praveen N. Gunawardene | Zendy; John F. Corrigan | Zendy; Mark S. Workentin | Zendy

Open Access

Golden Opportunity: A Clickable Azide-Functionalized [Au₂₅(SR)₁₈]⁻ Nanocluster Platform for Interfacial Surface Modifications

Author(s) -

Praveen N. Gunawardene,

John F. Corrigan,

Mark S. Workentin

Publication year - 2019

Publication title -

journal of the american chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 7.115

H-Index - 612

eISSN - 1520-5126

pISSN - 0002-7863

DOI - 10.1021/jacs.9b05182

Subject(s) - nanoclusters , chemistry , azide , cycloaddition , alkyne , monolayer , ligand (biochemistry) , click chemistry , mass spectrometry , infrared spectroscopy , crystallography , nanotechnology , photochemistry , combinatorial chemistry , organic chemistry , materials science , catalysis , biochemistry , receptor , chromatography

Ultrasmall atomically precise monolayer-protected gold thiolate nanoclusters are an intensely researched nanomaterial framework, but there is a lack of a system that can be directly synthesized and undergo interfacial surface chemistry. We report an [Au 25 (SCH 2 CH 2 - p -C 6 H 4 -N 3 ) 18 ] - nanocluster platform with azide moieties appended onto each surface ligand. The structure of this surface reactive cluster has been confirmed by single-crystal X-ray crystallography, mass spectrometry and ultraviolet visible, infrared and nuclear magnetic resonance spectroscopies. We show that all surface azide moieties are amenable to cluster-surface strain-promoted alkyne-azide cycloaddition chemistry with a strained cyclooctyne, opening this as a new platform to allow functional, postassembly surface modifications to this very prominent nanocluster.

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