title: Plasmon-coupled gold nanospheres for two-photon imaging and photoantibacterial activity.
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.
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543; NUSNNI-Nanocore, National University of Singapore, 2 Engineering Drive 3, Singapore, 117576.
authors.forename: Peiyan
authors.initials: P
authors.lastname: Yuan
authors.forename: Xin
authors.initials: X
authors.lastname: Ding
authors.forename: Zhenping
authors.initials: Z
authors.lastname: Guan
authors.forename: Nengyue
authors.initials: N
authors.lastname: Gao
authors.forename: Rizhao
authors.initials: R
authors.lastname: Ma
authors.forename: Xiao-Fang
authors.initials: XF
authors.lastname: Jiang
authors.forename: Yi Yan
authors.initials: YY
authors.lastname: Yang
authors.forename: Qing-Hua
authors.initials: QH
authors.lastname: Xu
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D002460:Cell Line; D006046:Gold / Q000737:chemistry* / Q000494:pharmacology; D006801:Humans; D050296:Microbial Viability / Q000187:drug effects*; D054118:Nanospheres / Q000737:chemistry*; D013211:Staphylococcus aureus / Q000187:drug effects; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D000900:Anti-Bacterial Agents; D006046:Gold
keywords: Au nanospheres; imaging; photoantibacterial; plasmon resonance; two-photon excitation