DNA-Encoded Tuning of Geometric and Plasmonic Properties of Nanoparticles Growing from Gold Nanorod Seeds

Tingjie Song; Longhua Tang; Li Huey Tan; Xiaojing Wang; Nitya Sai Reddy Satyavolu; Hang Xing; Zidong Wang; Jinghong Li; Haojun Liang; Yi Lu

doi:10.1002/anie.201500838

DNA-Encoded Tuning of Geometric and Plasmonic Properties of Nanoparticles Growing from Gold Nanorod Seeds

Angew Chem Int Ed Engl. 2015 Jul 6;54(28):8114-8. doi: 10.1002/anie.201500838. Epub 2015 Jun 10.

Authors

Tingjie Song^{1

2}, Longhua Tang^{2

3}, Li Huey Tan², Xiaojing Wang¹, Nitya Sai Reddy Satyavolu², Hang Xing², Zidong Wang², Jinghong Li³, Haojun Liang⁴, Yi Lu⁵

Affiliations

¹ CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, Anhui 230026 (P. R. China).
² Department of Chemistry, Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (USA).
³ Department of Chemistry, Beijing Key Laboratory for Analytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084 (P. R. China).
⁴ CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, Anhui 230026 (P. R. China). [email protected].
⁵ Department of Chemistry, Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (USA). [email protected].

PMID: 26096755
DOI: 10.1002/anie.201500838

Abstract

Systematically controlling the morphology of nanoparticles, especially those growing from gold nanorod (AuNR) seeds, are underexplored; however, the AuNR and its related morphologies have shown promises in many applications. Herein we report the use of programmable DNA sequences to control AuNR overgrowth, resulting in gold nanoparticles varying from nanodumbbell to nanooctahedron, as well as shapes in between, with high yield and reproducibility. Kinetic studies revealed two representative pathways for the shape control evolving into distinct nanostructures. Furthermore, the geometric and plasmonic properties of the gold nanoparticles could be precisely controlled by adjusting the base compositions of DNA sequences or by introducing phosphorothioate modifications in the DNA. As a result, the surface plasmon resonance (SPR) peaks of the nanoparticles can be fine-tuned in a wide range, from visible to second near-infrared (NIR-II) region beyond 1000 nm.

Keywords: DNA; gold; nanoparticles; nanostructures; surface plasmon resonance.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

DNA / chemistry*
Gold / chemistry*
Metal Nanoparticles / chemistry*
Nanostructures / chemistry*
Nanotubes / chemistry*
Surface Plasmon Resonance / methods*

Substances

Gold
DNA