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Updated: Apr 19, 2026
Synthesis of Near-Infrared Emitting Gold Nanoclusters for Biological Applications
Published on: March 22, 2020
Plasmon-coupled gold nanospheres for two-photon imaging and photoantibacterial activity
Peiyan Yuan1, Xin Ding, Zhenping Guan
1Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543; NUSNNI-Nanocore, National University of Singapore, 2 Engineering Drive 3, Singapore, 117576.
Abstract:
Positively charged Au nanospheres are found to form aggregates on the bacterial surface, resulting in significantly enhanced two-photon photoluminescence (TPPL). The enhanced TPPL is successfully utilized to image bacterial cells in the NIR region. In addition, these Au nanospheres effectively eradicate the bacterial cells by laser pulses in the same NIR region due to the photothermal effect.
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