Copper Selenide Nanocrystals for Photothermal Therapy

被引：1295
|
作者：
Hessel, Colin M. [1 ]
Pattani, Varun P. [2 ]
Rasch, Michael [1 ]
Panthani, Matthew G. [1 ]
Koo, Bonil [3 ]
Tunnell, James W. [2 ]
Korgel, Brian A. [1 ]
机构：
[1] Univ Texas Austin, Ctr Nano & Mol Sci & Technol, Texas Mat Inst, Dept Chem Engn, Austin, TX 78712 USA
[2] Univ Texas Austin, Dept Biomed Engn, Austin, TX 78712 USA
[3] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA
来源：
NANO LETTERS | 2011年 / 11卷 / 06期
基金：
美国国家科学基金会; 美国国家卫生研究院;
关键词：
Copper selenide; photothermal therapy (PPT); plasmon resonance; colloidal nanocrystals; amphiphilic polymer; cancer therapy; hyperthermia; gold nanoshells; gold nanorods; photothermal transduction efficiency; QUANTUM DOTS; GOLD NANORODS; GLUCOSE-OXIDASE; CELLULAR UPTAKE; CANCER-CELLS; SURFACE; NANOPARTICLES; SIZE; NANOSHELLS; SHAPE;
D O I：
10.1021/nl201400z
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Ligand-stabilized copper selenide (Cu(2-x)Se) nanocrystals, approximately 16 nm in diameter, were synthesized by a colloidal hot injection method and coated with amphiphilic polymer. The nanocrystals readily disperse in water and exhibit strong near-infrared (NIR) optical absorption with a high molar extinction coefficient of 7.7 x 10(7) cm(-1) M(-1) at 980 nm. When excited with 800 nm light, the Cu(2-x)Se nanocrystals produce significant photothermal heating with a photothermal transduction efficiency of 22%, comparable to nanorods and nanoshells of gold (Au). In vitro photothermal heating of Cu(2-x)Se nanocrystals in the presence of human colorectal cancer cell (HCT-116) led to cell destruction after 5 mm of laser irradiation at 33 W/cm(2), demonstrating the viabilitiy of Cu(2-x)Se nanocrystals for photothermal therapy applications.
引用
收藏
页码：2560 / 2566
页数：7
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