Selective nanodecoration of modified cyclodextrin crystals with gold nanorods

Gold nanorods (AuNRs) stabilized by cetyltrimethylammonium bromide (CTAB) were deposited onto crystals of α-cyclodextrin (α-CD) inclusion compounds (ICs) that contained octanethiol (OT) as guest molecules. The nanodecoration was produced specifically at the {0 0 1} crystal planes through interaction between the –SH groups of the ICs and the AuNRs.

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► Nanodecoration is used as a tool to reveal interfacial details of a supramolecular structure.
► Gold nanorods were deposited selectively onto organic crystals.
► The cyclodextrin crystals could be used as a new way to store gold nanorods.
► Selective nanodecoration of modified cyclodextrin crystals with gold nanorods.