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

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

Research output: Contribution to journalArticle

23 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)9470-9477
Number of pages8
JournalACS Nano
Volume10
Issue number10
DOIs
StatePublished - Oct 25 2016

Fingerprint

catalytic activity
Catalyst activity
Modulation
Nanoparticles
modulation
nanoparticles
Isomerization
Ligands
isomerization
ligands
Azobenzene
Peptides
peptides
optical switching
metal surfaces
Metals
azobenzene

Keywords

  • Au nanoparticles
  • biointerface reconfiguration
  • catalysis
  • peptides
  • photoactivated switch

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Remote Optically Controlled Modulation of Catalytic Properties of Nanoparticles through Reconfiguration of the Inorganic/Organic Interface. / Lawrence, Randy L.; Scola, Billy; Li, Yue; Lim, Chang Keun; Liu, Yang; Prasad, Paras N.; Swihart, Mark T.; Knecht, Marc.

In: ACS Nano, Vol. 10, No. 10, 25.10.2016, p. 9470-9477.

Research output: Contribution to journalArticle

Lawrence, Randy L. ; Scola, Billy ; Li, Yue ; Lim, Chang Keun ; Liu, Yang ; Prasad, Paras N. ; Swihart, Mark T. ; Knecht, Marc. / Remote Optically Controlled Modulation of Catalytic Properties of Nanoparticles through Reconfiguration of the Inorganic/Organic Interface. In: ACS Nano. 2016 ; Vol. 10, No. 10. pp. 9470-9477.
@article{8df5ebf5372346fa9759be9d20278fa8,
title = "Remote Optically Controlled Modulation of Catalytic Properties of Nanoparticles through Reconfiguration of the Inorganic/Organic Interface",
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",
author = "Lawrence, {Randy L.} and Billy Scola and Yue Li and Lim, {Chang Keun} and Yang Liu and Prasad, {Paras N.} and Swihart, {Mark T.} and Marc Knecht",
year = "2016",
month = "10",
day = "25",
doi = "10.1021/acsnano.6b04555",
language = "English (US)",
volume = "10",
pages = "9470--9477",
journal = "ACS Nano",
issn = "1936-0851",
publisher = "American Chemical Society",
number = "10",

}

TY - JOUR

T1 - Remote Optically Controlled Modulation of Catalytic Properties of Nanoparticles through Reconfiguration of the Inorganic/Organic Interface

AU - Lawrence, Randy L.

AU - Scola, Billy

AU - Li, Yue

AU - Lim, Chang Keun

AU - Liu, Yang

AU - Prasad, Paras N.

AU - Swihart, Mark T.

AU - Knecht, Marc

PY - 2016/10/25

Y1 - 2016/10/25

N2 - 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.

AB - 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.

KW - Au nanoparticles

KW - biointerface reconfiguration

KW - catalysis

KW - peptides

KW - photoactivated switch

UR - http://www.scopus.com/inward/record.url?scp=84994021916&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84994021916&partnerID=8YFLogxK

U2 - 10.1021/acsnano.6b04555

DO - 10.1021/acsnano.6b04555

M3 - Article

AN - SCOPUS:84994021916

VL - 10

SP - 9470

EP - 9477

JO - ACS Nano

JF - ACS Nano

SN - 1936-0851

IS - 10

ER -