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Research Article

A thermo-responsive rewritable plasmonic bio-memory by regulating single core-satellite gold nanocluster dissociation

Wen Zhang1,§, Yi Wang1,§, Yamin Wang1, Xiaomei Lu3,4, Weibing Wu2( ), Quli Fan1( ), Lei Zhang1( )
State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
Zhengzhou Institute of Biomedical Engineering and Technology, Zhengzhou 450001, China
Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Nanjing Tech University (Nanjing Tech), Nanjing 211816, China

§ Wen Zhang and Yi Wang contributed equally to this work.

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Abstract

A thermo-responsive rewritable plasmonic bio-memory chip has been successfully fabricated on an indium tin oxide (ITO) glass slide by assembling core-satellite gold nanoclusters with different size of gold nanoparticles (AuNPs) using double-strand DNA (dsDNA) linker. And the prepared 70@DNA20@13 gold nanoclusters (AuNCs) exhibited more stable and greater photothermal conversion ability. With short time irradiation by 633 nm microbeam laser, every individual AuNCs could be excited and remove the satellite AuNPs on its surface. Especially, in the dissociation process of AuNCs with 3−5 satellite, its color would change from yellow to green, which showed more significant reduction in the red channel of the dark-field microscopy (DFM) images and could be defined to state “0” and “1” respectively. Besides, this plasmonic nano bio-memory could transform cyclically its state between 0 and 1 which exhibited excellent rewritable ability.

Graphical Abstract

With short time irradiation by 633 nm microbeam laser, every individual gold nanoparticles (AuNPs) could be excited and led to dissociation of the satellite AuNPs. And the plasmonic assembly could be employed as a nano bio-memory due to its color would change from yellow to green, and showed more significant reduction in the red channel of the dark-field microscopy (DFM) images which could be defined to state “0” and “1” respectively.

Keywords

plasmonic assemblythermal-responsivesingle nanoparticlerewritable bio-memory

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Nano Research
Volume 17 Issue 8,
August 2024
Pages 7275-7282
DOI: 10.1007/s12274-024-6720-4

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Cite this article:
Zhang W, Wang Y, Wang Y, et al. A thermo-responsive rewritable plasmonic bio-memory by regulating single core-satellite gold nanocluster dissociation. Nano Research, 2024, 17(8): 7275-7282. https://doi.org/10.1007/s12274-024-6720-4
Topics:
NanobiotechnologySelf assemblySurface plasmon resonance

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Received: 22 March 2024
Revised: 14 April 2024
Accepted: 23 April 2024
Published: 25 June 2024
© Tsinghua University Press 2024