DNA‐Encoded Gold‐Gold Wettability for Programmable Plasmonic Engineering

Controlling the deposition and diffusion of adsorbed atoms (adatoms) on the surface of a solid material is vital for engineering the shape and function of nanocrystals. Here, we report the use of single‐stranded DNA (oligo‐adenine, oligo‐A) to encode the wettability of gold seeds by homogeneous gold...

Full description

Saved in:
Bibliographic Details
Published in:Angewandte Chemie 2022-11, Vol.134 (46), p.n/a
Main Authors: Zhai, Tingting, Zheng, Haoran, Fang, Weina, Gao, Zhaoshuai, Song, Shiping, Zuo, Xiaolei, Li, Qian, Wang, Lihua, Li, Jiang, Shi, Jiye, Liu, Xiaoguo, Tian, Yang, Shen, Jianlei, Fan, Chunhai
Format: Article
Language:English
Subjects:
Adatoms
Adenine
Adsorbed Atoms
Chemistry
Contact angle
Deoxyribonucleic acid
DNA
Engineering
Gold
Gold-Gold Wettability
Island growth
Nanocrystal Synthesis
Nanocrystals
Nanoparticles
Oligo-Adenine
Plasmonics
Seeds
Synthesis
Wettability
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Controlling the deposition and diffusion of adsorbed atoms (adatoms) on the surface of a solid material is vital for engineering the shape and function of nanocrystals. Here, we report the use of single‐stranded DNA (oligo‐adenine, oligo‐A) to encode the wettability of gold seeds by homogeneous gold adatoms to synthesize highly tunable plasmonic nanostructures. We find that the oligo‐A attachment transforms the nanocrystal growth mode from the classical Frank‐van der Merwe to the Volmer‐Weber island growth. Finely tuning the oligo‐A density can continuously change the gold‐gold contact angle (θ) from 35.1±3.6° to 125.3±8.0°. We further demonstrate the versatility of this strategy for engineering nanoparticles with different curvature and dimensions. With this unconventional growth mode, we synthesize a sub‐nanometer plasmonic cavity with a geometrical singularity when θ>90°. Superfocusing of light in this nanocavity produces a near‐infrared intraparticle plasmonic coupling, which paves the way to surface engineering of single‐particle plasmonic devices. We reported the use of single‐stranded DNA (oligo‐adenine, oligo‐A) to encode the wettability of gold seeds by homogeneous gold adatoms. This oligo‐A‐based surface chemistry engineering method will enable controllable diffusion of adsorbed atoms on the nanoscopic surface to develop single‐nanoparticle plasmonic devices for extreme nanophotonics and polariton chemistry.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.202210377