Highly Tunable Growth and Etching of Silica Shells on Surfactant-Free Gold Nanostars

被引：15

作者：

Atta, Supriya ^{[2
]}

Rangan, Sylvie ^{[3
]}

Fabris, Laura ^{[1
]}

机构：

[1] Rutgers State Univ, Dept Mat Sci & Engn, 607 Taylor Rd, Piscataway, NJ 08854 USA

[2] Rutgers State Univ, Dept Biomed Engn, 599 Taylor Rd, Piscataway, NJ 08854 USA

[3] Rutgers State Univ, Dept Phys & Astron, 136 Frelinghuysen Rd, Piscataway, NJ 08854 USA

来源：

CHEMNANOMAT | 2020年 / 6卷 / 01期

基金：

美国国家科学基金会;

关键词：

gold nanostars; silica etched; NaBH4; OPTICAL-PROPERTIES; NANOPARTICLES; MONODISPERSE; ROUTE;

D O I：

10.1002/cnma.201900459

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Herein, we report an efficient method to coat gold nanostars with a silica shell of variable thickness and then tunably etch it by using a mild silica etching reagent, NaBH4. This method generates a novel type of nanostar coating in which silica only covers the core, leaving the tips variably exposed.

引用

页码：53 / 57

页数：5

共 26 条

[1] Enhancing hot electron generation and injection in the near infrared via rational design and controlled synthesis of TiO2-gold nanostructures [J].

Atta, Supriya ;

Celik, Fuat E. ;

Fabris, Laura .

FARADAY DISCUSSIONS, 2019, 214 :341-351

[2] Understanding the role of AgNO3 concentration and seed morphology in the achievement of tunable shape control in gold nanostars [J].

Atta, Supriya ;

Beetz, Michael ;

Fabris, Laura .

NANOSCALE, 2019, 11 (06) :2946-2958

[3] TiO2 on Gold Nanostars Enhances Photocatalytic Water Reduction in the Near-Infrared Regime [J].

Atta, Supriya ;

Pennington, Ashley M. ;

Celik, Fuat E. ;

Fabris, Laura .

CHEM, 2018, 4 (09) :2140-2153

[4] Shaping Gold Nanostar Electric Fields for Surface-Enhanced Raman Spectroscopy Enhancement via Silica Coating and Selective Etching [J].

Atta, Supriya ;

Tsoulos, Ted V. ;

Fabris, Laura .

JOURNAL OF PHYSICAL CHEMISTRY C, 2016, 120 (37) :20749-20758

[5] Optical properties of plasmon-resonant bare and silica-coated nanostars used for cell imaging [J].

Bibikova, Olga ;

Popov, Alexey ;

Bykov, Alexander ;

Prilepskii, Artur ;

Kinnunen, Matti ;

Kordas, Krisztian ;

Bogatyrev, Vladimir ;

Khlebtsov, Nikolai ;

Vainio, Seppo ;

Tuchin, Valery .

JOURNAL OF BIOMEDICAL OPTICS, 2015, 20 (07)

[6] Gold Nanostars in Plasmonic Photothermal Therapy: The Role of Tip Heads in the Thermoplasmonic Landscape [J].

Chatterjee, Hirak ;

Rahman, Dewan S. ;

Sengupta, Mahuya ;

Ghosh, Sujit Kumar .

JOURNAL OF PHYSICAL CHEMISTRY C, 2018, 122 (24) :13082-13094

[7] Sitica-Coated Gold Nanorods with a Gold Overcoat: Controlling Optical Properties by Controlling the Dimensions of a Gold-Silica-Gold Layered Nanoparticle [J].

Cong, Huaiping ;

Toftegaard, Rasmus ;

Arnbjerg, Jacob ;

Ogilby, Peter R. .

LANGMUIR, 2010, 26 (06) :4188-4195

[8] Extinction Coefficient of Gold Nanostars [J].

de Puig, Helena ;

Tam, Justina O. ;

Yen, Chun-Wan ;

Gehrke, Lee ;

Hamad-Schifferli, Kimberly .

JOURNAL OF PHYSICAL CHEMISTRY C, 2015, 119 (30) :17408-17415

[9] A Self-Templated Etching Route to Surface-Rough Silica Nanoparticles for Superhydrophobic Coatings [J].

Du, Xin ;

He, Junhui .

ACS APPLIED MATERIALS & INTERFACES, 2011, 3 (04) :1269-1276

[10] Silica-Coated Gold Nanostars for Combined Surface-Enhanced Raman Scattering (SERS) Detection and Singlet-Oxygen Generation: A Potential Nanoplatform for Theranostics [J].

Fales, Andrew M. ;

Yuan, Hsiangkuo ;

Vo-Dinh, Tuan .

LANGMUIR, 2011, 27 (19) :12186-12190

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