物理学与电子学

Ag@Au双金属纳米颗粒的制备和表征

  • 赵天琛 ,
  • 张晓磊 ,
  • 楼柿涛
展开
  • 华东师范大学 精密光谱科学与技术国家重点实验室, 上海 200241

收稿日期: 2020-03-26

  网络出版日期: 2022-01-18

基金资助

国家自然科学基金(11874015)

Preparation and characterization of Ag@Au bimetallic nanoparticles

  • Tianchen ZHAO ,
  • Xiaolei ZHANG ,
  • Shitao LOU
Expand
  • State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China

Received date: 2020-03-26

  Online published: 2022-01-18

摘要

采用种子生长法制备了银纳米颗粒, 通过电置换反应将单金属银颗粒转变为中空金银双金属纳米颗粒. 电镜表征及吸收光谱的结果表明, 通过控制种子溶液的加入量、超声时间和离心次数等条件, 能够有效调控金属纳米颗粒的尺寸以及局域表面等离激元的共振峰位与目标分子匹配; 进而可以利用配体交换反应在金属纳米颗粒表面包裹TDBC分子薄膜, 实现表面等离激元-分子激子的强耦合.

本文引用格式

赵天琛 , 张晓磊 , 楼柿涛 . Ag@Au双金属纳米颗粒的制备和表征[J]. 华东师范大学学报(自然科学版), 2022 , 2022(1) : 43 -51 . DOI: 10.3969/j.issn.1000-5641.2022.01.006

Abstract

Ag nanoparticles were first prepared using a seed-based thermal synthetic procedure. The monometallic particles were then transformed into bimetallic particles via a galvanic replacement reaction. A transmission electron microscope (TEM), scanning transmission electron microscope (STEM), and absorption spectrum were subsequently used for characterization. By controlling the amount of seed added, the ultrasonic exposure, and the centrifugal time, we can effectively tune the size of the particles and the localized surface plasmon resonance peak positions. The TDBC film can be wrapped on the surface of the metallic nanostructures by a ligand exchange reaction to achieve strong coupling between surface plasmon and molecular excitons.

参考文献

1 SHEERY L J, JIN R C, MIRKIN C A, et al. Localized surface plasmon resonance spectroscopy of single silver triangular nanoprisms. Nano letters, 2006, 6 (9): 2060- 2065.
2 SUN L C, LI Z, HE J S, et al. Strong coupling with directional absorption features of Ag@Au hollow nanoshell/J-aggregate heterostructures. Nanophotonics, 2019, 8 (10): 1835- 1845.
3 LU Y, LIU G L, LEE L P. High-density silver nanoparticle film with temperature-controllable interparticle spacing for a tunable surface enhanced Raman scattering substrate. Nano letters, 2005, 5 (1): 5- 9.
4 TAM F, GOODRICH G P, JOHNSON B R, et al. Plasmonic enhancement of molecular fluorescence. Nano letters, 2007, 7 (2): 496- 501.
5 WEN F, ZHANG W Q, WEI G W, et al. Synthesis of noble metal nanoparticles embedded in the shell layer of core-shell poly(styrene-co-4-vinylpyridine) micospheres and their application in catalysis. Chemistry of Materials, 2008, 20 (6): 2144- 2150.
6 GUNAWAN C, TEOH W Y, MARQUIS C P, et al. Reversible antimicrobial photoswitching in nanosilver. Small, 2010, 5 (3): 341- 344.
7 LEKEUFACK D D, BRIOUDE A, COLEMAN A W, et al. Core-shell gold J-aggregate nanoparticles for highly efficient strong coupling applications. Applied Physics Letters, 2010, 96 (25): 253107.
8 TANG Y K, YU X T, PAN H F, et al. Numerical study of novel ratiometric sensors based on plasmon–exciton coupling. Applied Spectroscopy, 2017, 71 (10): 2377- 2384.
9 ZHOU N, YUAN M, GAO Y H, et al. Silver nanoshell plasmonically controlled emission of semiconductor quantum dots in the strong coupling regime. ACS Nano, 2016, 10 (4): 4154- 63.
10 ZENGIN G, WERS?LL M, NILSSON S, et al. Realizing strong light-matter interactions between single-nanoparticle plasmons and molecular excitons at smbient conditions. Physical Review Letters, 2015, 114 (15): 157401.
11 ZENGIN G, JOHANSSON G, JOHANSSON P, et al. Approaching the strong coupling limit in single plasmonic nanorods interacting with J-aggregates. Scientific Reports, 2013, 3 (1): 83- 90.
12 AHERME D, LEDITH D M, GRAR M, et al. Optical properties and growth aspects of silver nanoprisms produced by a highly reproducible and rapid synthesis at room temperature. Advanced Functional Materials, 2008, 18 (14): 2005- 2016.
13 MA W D, YANG H F, LI Z P, et al. The tunable and well-controlled surface plasmon resonances of au hollow nanostructures by a chemical route. Plasmonics, 2018, 13 (1): 47- 53.
14 MOLL J, DAEHNE S, DURRANT J R, et al. Optical dynamics of excitons in J aggregates of a carbocyanine dye. The Journal of Chemical Physics, 1995, 102 (16): 6362- 70.
15 MUNKHBAT B, WERSALL M, BARANOV D G, et al. Suppression of photo-oxidation of organic chromophores by strong coupling to plasmonic nanoantennas. Science Advances, 2018, 4 (7): 9552.
16 SOROKIN A V, ROPAKOVA I Y, WOLTER S, et al. Exciton dynamics and self-trapping of carbocyanine J-aggregates in polymer films. The Journal of Physical Chemistry C, 2019, 123 (14): 9428- 9444.
17 SOROKIN A V, ROPAKOVA I Y, GRYNYOV R S, et al. Strong difference between optical properties and morphologies for J-aggregates of similar cyanine dyes. Dyes and Pigments, 2018, 152, 49- 53.
18 PRIETO G, TüVSüZ H, DUYCKAERTS N, et al. Hollow nano- and microstructures as catalysts. Chemical Reviews, 2016, 14056.
19 CLAIRE C M, XIA N Y. Engineering the properties of metal nanostructures via galvanic replacement reactions. Materials Science & Engineering R, 2010, 70 (3): 44- 62.
20 李悦芳. 金属氧化物纳米粒子的分散及其环氧改性进展. 热固性树脂, 2015, 30 (5): 67- 70.
21 GUO Z R, FAN X, LIU L K, et al. Achieving high-purity colloidal gold nanoprisms and their application as biosensing platforms. J Colloid Interface, 2010, 348 (1): 29- 36.
22 毛远洋, 贾会敏, 何伟伟. AuCu双金属纳米颗粒的制备, 表征及性能探究. 贵金属, 2020, (1): 25- 30.
23 姜波, 杨健, 李彦景, 等. 银纳米片的可控光诱导化学合成及其表征. 扬州大学学报(自然科学版), 2017, 20 (1): 28- 32.
24 SUN Y G, XIA Y N. Mechanistic study on the replacement reaction between silver nanostructures and chloroauric acid in aqueous medium. Journal of the American Chemical Society, 2004, 126 (12): 3892- 3901.
文章导航

/