DataVXACS Applied Materials & InterfacesPaper
journal article·2017-07-05

Cavity-Type DNA Origami-Based Plasmonic Nanostructures for Raman Enhancement

Mengzhen Zhao, Xu Wang, Shaokang Ren, Yikang Xing, Jun Wang, Nan Teng, Dongxia Zhao, Wei Liu, Dan Zhu, Shao Su, Jiye Shi, Shiping Song, Lihua Wang, Jie Chao, Lianhui Wang

ACS Applied Materials & Interfaces· Volume 9· Issue 26
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Source abstract

Abstract

DNA origami has been established as addressable templates for site-specific anchoring of gold nanoparticles (AuNPs). Given that AuNPs are assembled by charged DNA oligonucleotides, it is important to reduce the charge repulsion between AuNPs-DNA and the template to realize high yields. Herein, we developed a cavity-type DNA origami as templates to organize 30 nm AuNPs, which formed dimer and tetramer plasmonic nanostructures. Transmission electron microscopy images showed that high yields of dimer and tetramer plasmonic nanostructures were obtained by using the cavity-type DNA origami as the template. More importantly, we observed significant Raman signal enhancement from molecules covalently attached to the plasmonic nanostructures, which provides a new way to high-sensitivity Raman sensing.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Advanced biosensing and bioanalysis techniques · Gold and Silver Nanoparticles Synthesis and Applications · Plasmonic and Surface Plasmon Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory for Organic Electronics & Information Displays (KLOEID), Institute of Advanced Materials (IAM), National Syngerstic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China

UCB Pharma, 208 Bath Road, Slough SL1 3WE, U.K.

Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, CAS Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China

Funding

Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of Jiangsu Province · National Natural Science Foundation of China · Chinese Academy of Sciences · Mega-Projects of Science and Technology Research · Nanjing University of Posts and Telecommunications Scientific Foundation · Jiangsu Province · Priority Academic Program Development of Jiangsu Higher Education Institutions

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