Catalyst discovery through megalibraries of nanomaterials

Edward J. Kluender, James L. Hedrick, Keith A. Brown, Rahul Rao, Brian Meckes, Jingshan S. Du, Liane M. Moreau, Benji Maruyama, Chad A. Mirkin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


The nanomaterial landscape is so vast that a high-throughput combinatorial approach is required to understand structure–function relationships. To address this challenge, an approach for the synthesis and screening of megalibraries of unique nanoscale features (>10,000,000) with tailorable location, size, and composition has been developed. Polymer pen lithography, a parallel lithographic technique, is combined with an ink spray-coating method to create pen arrays, where each pen has a different but deliberately chosen quantity and composition of ink. With this technique, gradients of Au-Cu bimetallic nanoparticles have been synthesized and then screened for activity by in situ Raman spectroscopy with respect to single-walled carbon nanotube (SWNT) growth. Au3Cu, a composition not previously known to catalyze SWNT growth, has been identified as the most active composition.

Original languageEnglish (US)
Pages (from-to)40-45
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number1
StatePublished - Jan 2 2019


  • Carbon nanotube growth
  • Catalysis
  • Combinatorial screening
  • In situ Raman spectroscopy
  • Multimetallic nanoparticle synthesis

ASJC Scopus subject areas

  • General


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