Impact of Polymer-Constrained Annealing on the Properties of DNA Origami-Templated Gold Nanowires

被引：10
作者：
Westover, Tyler R. [1 ]
Aryal, Basu R. [2 ]
Ranasinghe, Dulashani R. [2 ]
Uprety, Bibek [2 ]
Harb, John N. [2 ]
Woolley, Adam T. [2 ]
Davis, Robert C. [1 ]
机构：
[1] Brigham Young Univ, Dept Phys & Astron, Provo, UT 84602 USA
[2] Brigham Young Univ, Dept Chem & Biochem, Provo, UT 84602 USA
来源：
LANGMUIR | 2020年 / 36卷 / 24期
基金：
美国国家科学基金会;
关键词：
SITE-SPECIFIC METALLIZATION; RAYLEIGH INSTABILITY; ELECTRON; BEAM; PURIFICATION; PLATINUM; DESIGN; SHAPES;
D O I：
10.1021/acs.langmuir.0c00594
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
DNA origami-templated fabrication enables bottom-up fabrication of nanoscale structures from a variety of functional materials, including metal nanowires. We studied the impact of low-temperature annealing on the morphology and conductance of DNA-templated nanowires. Nanowires were formed by selective seeding of gold nanorods on DNA origami and gold electroless plating of the seeded structures. At low annealing temperatures (160 degrees C for seeded-only and 180 degrees C for plated), the wires broke up and separated into multiple, isolated islands. Through the use of polymer-constrained annealing, the island formation in plated wires was suppressed up to annealing temperatures of 210 degrees C. Four-point electrical measurements showed that the wires remained conductive after a polymer-constrained annealing at 200 degrees C.
引用
收藏
页码：6661 / 6667
页数：7
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