Controlled synthesis of highly-branched plasmonic gold nanoparticles through peptoid engineering
Journal Article
·
· Nature Communications
Inspired by peptide- and protein-controlled formation of hierarchical inorganic nanostructures in nature, herein we report the design of sequence-defined peptoids for biomimetic synthesis of flower-like gold nanosuperstruc-tures. We demonstrate that the peptoid-induced morphosyn-thesis of gold nanoflowers is sequence-dependent. By varying the hydrophobicity, number of carboxylate and amino groups, and side-chain positions of peptoids, we develop a rule of thumb for designing peptoids that yield gold nanoflowers. Through a combination of hyperspectral UV-Vis absorption micro-spectroscopy (H-UVVIS-AMS) and three-photon photoemission electron microscopy (TP-PEEM), we measured the plasmonic properties of individual nanoflowers. Whereas H-UVVIS-AMS experiments revealed well-defined plasmon resonances centered at ~528 nm, TP-PEEM measurements showed an unprecedented plasmonic enhancement as high as 105 for a single nanoflower. A com-bination of the unique plasmonic property and the high sta-bility endows the peptoid-engineered nanoflowers with po-tential applications in chemical and biological imaging. FY, YC, HJ and C-LC acknowledge support by the Materials Synthesis and Simulation Across Scales (MS3) Initiative, through the Laboratory Directed Research & Development (LDRD) fund at Pacific Northwest National Laboratory (PNNL). FY was also partially supported by fellowships from Shandong Provincial Education Association for International Exchanges. YG was supported by the US Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences. PZE acknowledges support from the Laboratory Directed Research and Development Program through a Linus Pauling Fellowship at PNNL. PNNL is multi-program national laboratory operated for the Department of Energy by Battelle under Contracts No. DE-AC05-76RL01830. The authors are most grateful to Alan Joly and Wayne Hess (PNNL) for their support with the PEEM measurements and several useful discussions.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1481919
- Report Number(s):
- PNNL-SA-118537
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 9; ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
Peptoids as tools and sensors
|
journal | April 2019 |
Design of plasmonic nanomaterials for diagnostic spectrometry
|
journal | January 2019 |
Anisotropic Gold Nanoparticles in Biomedical Applications
|
journal | October 2018 |
Size/shape control of gold nanoparticles synthesized by alternating current glow discharge over liquid: the role of pH
|
journal | July 2019 |
Similar Records
Efficient Cytosolic Delivery Using Crystalline Nanoflowers Assembled from Fluorinated Peptoids
Peptoid Backbone Flexibilility Dictates Its Interaction with Water and Surfaces: A Molecular Dynamics Investigation
Nucleation and phase transformation pathways in electrolyte solutions investigated by in situ microscopy techniques
Journal Article
·
Wed Nov 21 23:00:00 EST 2018
· Small
·
OSTI ID:1501614
Peptoid Backbone Flexibilility Dictates Its Interaction with Water and Surfaces: A Molecular Dynamics Investigation
Journal Article
·
Mon Jan 22 23:00:00 EST 2018
· Biomacromolecules
·
OSTI ID:1439013
Nucleation and phase transformation pathways in electrolyte solutions investigated by in situ microscopy techniques
Journal Article
·
Wed Feb 28 23:00:00 EST 2018
· Current Opinion in Colloid & Interface Science
·
OSTI ID:1513204