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Plasmonic circular dichroism of vesicle-like nanostructures by the template-less self-assembly of achiral Janus nanoparticles

Journal Article · · Nanoscale
DOI:https://doi.org/10.1039/c8nr05366a· OSTI ID:1543812
Chiral nanostructures have been attracting extensive interest in recent years primarily because of the unique materials properties that can be exploited for diverse applications. In this study, gold Janus nanoparticles, with hexanethiolates and 3-mercapto-1,2-propanediol segregated on the two hemispheres of the metal cores (dia. 2.7 ± 0.4 nm), self-assembled into vesicle-like, hollow nanostructures in both water or organic media, and exhibited apparent plasmonic circular dichroism (PCD) absorption in the visible range. This was in contrast to individual Janus nanoparticles, bulk-exchange nanoparticles where the two ligands were homogeneously mixed on the nanoparticle surface, or nanoparticles capped with only one kind of the ligands. The PCD signals were found to become intensified with increasing coverage of the 3-mercapto-1,2-propanediol ligands on the nanoparticle surface. This was accounted for by the dipolar property of the structurally asymmetrical Janus nanoparticles, and theoretical simulations based on first principles calculations showed that when the nanoparticle dipoles self-assembled onto the surface of a hollow sphere, a vortex was formed which gave rise to the unique chiral characteristics. The resulting chiral nanoparticle vesicles could be exploited for the separation of optical enantiomers, as manifested in the selective identification and separation of D-alanine from the L-isomer
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1543812
Alternate ID(s):
OSTI ID: 1461017
Journal Information:
Nanoscale, Journal Name: Nanoscale Journal Issue: 30 Vol. 10; ISSN NANOHL; ISSN 2040-3364
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (46)

Janus Nanoparticles by Interfacial Engineering journal August 2007
Self-Assembly of Chiral Plasmonic Nanostructures journal June 2016
A Singlet Oxygen Generating Agent by Chirality-dependent Plasmonic Shell-Satellite Nanoassembly journal February 2017
Janus Nanoparticles: Preparation, Characterization, and Applications journal December 2013
Application of Electronic Circular Dichroism in Configurational and Conformational Analysis of Organic Compounds journal August 2007
Chiral Inorganic Nanostructures journal April 2017
Chiroptical Study of Plasmon–Molecule Interaction: The Case of Interaction of Glutathione with Silver Nanocubes journal July 2015
Plasmon-Mediated Two-Photon Photoluminescence-Detected Circular Dichroism in Gold Nanosphere Assemblies journal February 2016
Programmable Extreme Chirality in the Visible by Helix-Shaped Metamaterial Platform journal August 2016
Reversible Plasmonic Circular Dichroism via Hybrid Supramolecular Gelation of Achiral Gold Nanorods journal November 2016
Interparticle Coupling Effect on the Surface Plasmon Resonance of Gold Nanoparticles:  From Theory to Applications journal November 2007
Chirality of Silver Nanoparticles Synthesized on DNA journal August 2006
Superenantioselective Chiral Surface Explosions journal December 2013
Chiral Arrangement of Achiral Au Nanoparticles by Supramolecular Assembly of Helical Nanofiber Templates journal April 2014
On the Origin of the Optical Activity Displayed by Chiral-Ligand-Protected Metallic Nanoclusters journal February 2010
Surface Plasmon Coupled Circular Dichroism of Au Nanoparticles on Peptide Nanotubes journal March 2010
Circular Dichroism Simulated Spectra of Chiral Gold Nanoclusters:  A Dipole Approximation journal November 2003
Broad-Band Giant Circular Dichroism in Metamaterials of Twisted Chains of Metallic Nanoparticles journal January 2013
Organothiols Self-Assembled onto Gold: Evidence for Deprotonation of the Sulfur-Bound Hydrogen and Charge Transfer from Thiolate journal April 2013
Giant Gold−Glutathione Cluster Compounds:  Intense Optical Activity in Metal-Based Transitions journal March 2000
Controlled Assembly of Janus Nanoparticles journal September 2010
Enhanced Stability of Janus Nanoparticles by Covalent Cross-Linking of Surface Ligands journal December 2011
Janus Nanoparticles as Versatile Phase-Transfer Reagents journal June 2014
Alkanethiolate Gold Cluster Molecules with Core Diameters from 1.5 to 5.2 nm:  Core and Monolayer Properties as a Function of Core Size journal January 1998
Plasmonic Circular Dichroism of Chiral Metal Nanoparticle Assemblies journal July 2010
Chiral Nanocrystals: Plasmonic Spectra and Circular Dichroism journal May 2012
Large-Area 3D Chiral Plasmonic Structures journal June 2013
Triple-helical nanowires by tomographic rotatory growth for chiral photonics journal March 2015
Intracellular localization of nanoparticle dimers by chirality reversal journal November 2017
Tuning the interactions between chiral plasmonic films and living cells journal December 2017
Synthesis of thiol-derivatised gold nanoparticles in a two-phase Liquid–Liquid system journal January 1994
Metallic influence on the atomic structure and optical activity of ligand-protected nanoparticles: a comparison between Ag and Au journal January 2014
Plasmonic circular dichroism in side-by-side oligomers of gold nanorods: the influence of chiral molecule location and interparticle distance journal January 2015
Optically active helical polyacetylene/Fe 3 O 4 composite microspheres: prepared by precipitation polymerization and used for enantioselective crystallization journal January 2014
Tuning the structural asymmetries of three-dimensional gold nanorod assemblies journal January 2015
Enhancing the plasmonic circular dichroism by entrapping chiral molecules at the core–shell interface of rod-shaped Au@Ag nanocrystals journal January 2016
Tunable optical activity of plasmonic dimers assembled by DNA origami journal January 2015
Nanoscale chirality in metal and semiconductor nanoparticles journal January 2016
Application of electronic circular dichroism in configurational and conformational analysis of organic compounds journal January 2007
Chiral nanoparticle assemblies: circular dichroism, plasmonic interactions, and exciton effects journal January 2011
Chiral assembly of gold nanorods with collective plasmonic circular dichroism response journal January 2011
One-dimensional self-assembly of gold nanoparticles for tunable surface plasmon resonance properties journal May 2006
Optical chiral metamaterials: a review of the fundamentals, fabrication methods and applications journal September 2016
Circular Dichroism Techniques: Biomolecular and Nanostructural Analyses- A Review journal August 2009
First-principles calculations of circular dichroism of ligand-protected gold nanoparticles journal January 2009
Optically active quantum-dot molecules journal January 2017

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