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Lawrence RL, Scola B, Li Y, et al. Remote Optically Controlled Modulation of Catalytic Properties of Nanoparticles through Reconfiguration of the Inorganic/Organic Interface. ACS Nano. 2016;10(10):9470-9477doi: 10.1021/acsnano.6b04555.
Lawrence, R. L., Scola, B., Li, Y., Lim, C. K., Liu, Y., Prasad, P. N., Swihart, M. T., & Knecht, M. R. (2016). Remote Optically Controlled Modulation of Catalytic Properties of Nanoparticles through Reconfiguration of the Inorganic/Organic Interface. ACS nano, 10(10), 9470-9477. https://doi.org/10.1021/acsnano.6b04555
Lawrence, Randy L, et al. "Remote Optically Controlled Modulation of Catalytic Properties of Nanoparticles through Reconfiguration of the Inorganic/Organic Interface." ACS nano vol. 10,10 (2016): 9470-9477. doi: https://doi.org/10.1021/acsnano.6b04555
Lawrence RL, Scola B, Li Y, Lim CK, Liu Y, Prasad PN, Swihart MT, Knecht MR. Remote Optically Controlled Modulation of Catalytic Properties of Nanoparticles through Reconfiguration of the Inorganic/Organic Interface. ACS Nano. 2016 Oct 25;10(10):9470-9477. doi: 10.1021/acsnano.6b04555. Epub 2016 Oct 03. PMID: 27666415.
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ACS Nano. 2016 Oct 25;10(10):9470-9477. doi: 10.1021/acsnano.6b04555. Epub 2016 Oct 03.

Remote Optically Controlled Modulation of Catalytic Properties of Nanoparticles through Reconfiguration of the Inorganic/Organic Interface.

ACS nano

Randy L Lawrence, Billy Scola, Yue Li, Chang-Keun Lim, Yang Liu, Paras N Prasad, Mark T Swihart, Marc R Knecht

Affiliations

  1. Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146, United States.

PMID: 27666415 DOI: 10.1021/acsnano.6b04555

Abstract

We introduce here a concept of remote photoinitiated reconfiguration of ligands adsorbed onto a nanocatalyst surface to enable reversible modulation of the catalytic activity. This is demonstrated by using peptide-ligand-capped Au nanoparticles with a photoswitchable azobenzene unit integrated into the biomolecular ligand. Optical switching of the azobenzene isomerization state drives rearrangement of the ligand layer, substantially changing the accessibility and subsequent catalytic activity of the underlying metal surface. The catalytic activity was probed using 4-nitrophenol reduction as a model reaction, where both the position of the photoswitch in the peptide sequence and its isomerization state affected the catalytic activity of the nanoparticles. Reversible switching of the isomerization state produces reversible changes in catalytic activity via reconfiguration of the biomolecular overlayer. These results provide a pathway to catalytic materials whose activity can be remotely modulated, which could be important for multistep chemical transformations that can be accessed via nanoparticle-based catalytic systems.

Keywords: Au nanoparticles; biointerface reconfiguration; catalysis; peptides; photoactivated switch

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