Synergistic Reducing Effect for Synthesis of Well-Defined Au Nanooctopods With Ultra-Narrow Plasmon Band Width and High Photothermal Conversion Efficiency

Branched Au nanoparticles have attracted intense interest owing to their remarkable properties and a wide variety of potential applications in surface-enhanced Raman spectroscopy (SERS), photothermal therapy, photoacoustic imaging, and biomedicines. The morphology and spatial arrangement of branches...

Full description

Saved in:
Bibliographic Details
Published inFrontiers in chemistry Vol. 6; p. 335
Main Authors Chang, Yi-Xin, Gao, Hui-Min, Zhang, Ning-Ning, Tao, Xing-Fu, Sun, Tianmeng, Zhang, Junhu, Lu, Zhong-Yuan, Liu, Kun, Yang, Bai
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 10.08.2018
Subjects
Chemistry
nanobranch
nanooctopods
nanostar
photoacoustic imaging
photothermal conversion efficiency
ultra-narrow plasmon band width
synergistic reducing effect
nanostar
photothermal conversion efficiency
nanooctopods
photoacoustic imaging
nanobranch
ultra-narrow plasmon band width
Online AccessGet full text

Cover

More Information
Summary:Branched Au nanoparticles have attracted intense interest owing to their remarkable properties and a wide variety of potential applications in surface-enhanced Raman spectroscopy (SERS), photothermal therapy, photoacoustic imaging, and biomedicines. The morphology and spatial arrangement of branches play the most crucial role in the determination of their properties and applications. However, it is still a synthetic challenge to control the exact arm numbers of branches with specific spatial arrangements. Here we report a facile method for the kinetically controlled growth of Au nanooctopods (NOPs) with a high yield (81%), monodispersity, and reproducibility by using the synergistic reducing effect of ascorbic acid and 1-methylpyrrolidine. The NOPs have eight arms elongated along directions with uniform arm lengths. Due to their well-defined size and shape, NOPs show ultra-narrow surface plasmon band width with a full width at half maximum of only 76 nm (0.20 eV). Upon irradiation with laser, the NOPs possessed excellent photothermal conversion efficiencies up to 83.0% and photoacoustic imaging properties. This work highlights the future prospects of using NOPs with desired physicochemical properties for biomedical applications.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Edited by: Jing Zhao, University of Connecticut, United States
Reviewed by: Yugang Sun, Temple University, United States; Xiaoji Xie, Nanjing Tech University, China
This article was submitted to Nanoscience, a section of the journal Frontiers in Chemistry
ISSN:2296-2646
2296-2646
DOI:10.3389/fchem.2018.00335