@article{715657715b39462fb9dff0c7bb504105,
title = "Massively Parallel Nanoparticle Synthesis in Anisotropic Nanoreactors",
abstract = "This work reports a massively parallel approach for synthesizing inorganic nanoparticles (Au, Ag, Se, and mixed oxides of Cu, Co, Ni, Ge, and Ta) based upon lithographically generated arrays of square pyramidal nanoholes, which serve as nanoreactors. Particle precursor-containing polymers are spin-coated onto the nanoreactors, which upon dewetting generate a morphology of isolated polymer droplets in each nanoreactor. This dewetting process yields a well-defined and precisely controlled volume of polymer and therefore particle precursor in each nanoreactor. Subsequent stepwise annealing (first at 150 °C and then at 500 °C) yields arrays of monodisperse, site-isolated particles with sub-5 nm position control. By varying the precursor loading of the polymer, particle size can be systematically controlled in the 7-30 nm range. This work not only introduces the concept of merging block copolymer inks with nanohole arrays in the synthesis of nanoparticles but also underscores the value of the nanoreactor shape in controlling resulting particle position.",
keywords = "anisotropic, arrays, dewetting, nanofabrication, nanoparticles, nanoreactor",
author = "Liban Jibril and Chen, {Peng Cheng} and Jingtian Hu and Odom, {Teri W.} and Mirkin, {Chad A.}",
note = "Funding Information: This material is based upon work supported by the Sherman Fairchild Foundation, Inc., and the National Science Foundation under Grant IIP-1621773. This work was also supported by the National Science Foundation under RAISE Award CMMI-1848613 (J.H. and T.W.O.). L.J. was supported by the National Science Foundation through the National Science Foundation Graduate Research Fellowship Program under Grant No. DGE-1842165. Any opinions, findings, and conclusions or recommendations expressed in this work are those of the authors and do not necessarily reflect the views of the National Science Foundation. The authors gratefully acknowledge Jessica Hornick from Northwestern University{\textquoteright}s Biological Imaging Facility (BIF) for invaluable help in automating the image processing workflow. Finally, the authors acknowledge Jingshan Du for helpful discussions during the writing of this manuscript. This work utilized the EPIC and NUFAB facilities of Northwestern University{\textquoteright}s NUANCE Center, which has received support from the Soft and Hybrid Nanotechnology Experimental (SHyNE) resource (NSF ECCS-1542205), the MRSEC program (NSF DMR-1121262) at the Materials Research Center, The International Institute for Nanotechnology (IIN), the Keck Foundation, and the State of Illinois through the IIN.",
year = "2019",
month = nov,
day = "26",
doi = "10.1021/acsnano.9b05781",
language = "English",
volume = "13",
pages = "12408--12414",
journal = "ACS Nano",
issn = "1936-0851",
publisher = "American Chemical Society",
number = "11",
}