TY - JOUR
T1 - Host-guest chemistry with water-soluble gold nanoparticle supraspheres
AU - Wang, Yizhan
AU - Zeiri, Offer
AU - Raula, Manoj
AU - Le Ouay, Benjamin
AU - Stellacci, Francesco
AU - Weinstock, Ira A.
N1 - Funding Information:
I.A.W thanks the Israel Science Foundation (190/13) and I.A.W. and F.S. thank the US Israel Binational Science Foundation (2008277) for support. We thank E. Gadot for TEM imaging and I. Willner for samples of TNT and RDX.
Publisher Copyright:
© 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
PY - 2017/2/7
Y1 - 2017/2/7
N2 - The uptake of molecular guests, a hallmark of the supramolecular chemistry of cages and containers, has yet to be documented for soluble assemblies of metal nanoparticles. Here we demonstrate that gold nanoparticle-based supraspheres serve as a host for the hydrophobic uptake, transport and subsequent release of over two million organic guests, exceeding by five orders of magnitude the capacities of individual supramolecular cages or containers and rivalling those of zeolites and metal-organic frameworks on a mass-per-volume basis. The supraspheres are prepared in water by adding hexanethiol to polyoxometalate-protected 4nm gold nanoparticles. Each 200nm assembly contains hydrophobic cavities between the estimated 27,400 gold building blocks that are connected to one another by nanometre-sized pores. This gives a percolated network that effectively absorbs large numbers of molecules from water, including 600,000, 2,100,000 and 2,600,000 molecules (35, 190 and 234-1) of para-dichorobenzene, bisphenol A and trinitrotoluene, respectively.
AB - The uptake of molecular guests, a hallmark of the supramolecular chemistry of cages and containers, has yet to be documented for soluble assemblies of metal nanoparticles. Here we demonstrate that gold nanoparticle-based supraspheres serve as a host for the hydrophobic uptake, transport and subsequent release of over two million organic guests, exceeding by five orders of magnitude the capacities of individual supramolecular cages or containers and rivalling those of zeolites and metal-organic frameworks on a mass-per-volume basis. The supraspheres are prepared in water by adding hexanethiol to polyoxometalate-protected 4nm gold nanoparticles. Each 200nm assembly contains hydrophobic cavities between the estimated 27,400 gold building blocks that are connected to one another by nanometre-sized pores. This gives a percolated network that effectively absorbs large numbers of molecules from water, including 600,000, 2,100,000 and 2,600,000 molecules (35, 190 and 234-1) of para-dichorobenzene, bisphenol A and trinitrotoluene, respectively.
UR - http://www.scopus.com/inward/record.url?scp=85008677043&partnerID=8YFLogxK
U2 - 10.1038/nnano.2016.233
DO - 10.1038/nnano.2016.233
M3 - Article
AN - SCOPUS:85008677043
SN - 1748-3387
VL - 12
SP - 170
EP - 176
JO - Nature Nanotechnology
JF - Nature Nanotechnology
IS - 2
ER -