title: Enhanced Photoluminescence Property for Quantum Dot-Gold Nanoparticle Hybrid.
abstract: In this paper, we have synthesized ZnCdSeS quantum dots (QDs)-gold nanoparticle (Au NPs) hybrids in aqueous solution via bi-functional linker mercaptoacetic acid (MPA). The absorption peaks of ZnCdSeS QDs and Au are both located at 520 nm. It is investigated that PL intensity of QD-Au hybrid can be affected by the amounts of Au and pH value of hybrid solution. The located surface plasmon resonance (LSPR) effect of QD-Au NPs has been demonstrated by increased fluorescence intensity. The phenomenon of fluorescence enhancement can be maximized under the optimized pH value of 8.5. LSPR-enhanced photoluminescence property of QD-Au hybrid will be beneficial for the potential applications in the area of biological imaging and detection.
authors.affiliation: School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, China. hqq@seu.edu.cn.
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Huang
authors.affiliation: School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, China. chenjing@seu.edu.cn.
authors.forename: Jing
authors.initials: J
authors.lastname: Chen
authors.affiliation: School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, China. sdtzzhaojian@163.com.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhao
authors.affiliation: School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, China. 230149638@seu.edu.cn.
authors.forename: Jiangyong
authors.initials: J
authors.lastname: Pan
authors.affiliation: School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, China. lw@seu.edu.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Lei
authors.affiliation: State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing, 100084, China. zz241@tsinghua.edu.cn.
authors.forename: Zichen
authors.initials: Z
authors.lastname: Zhang
keywords: LSPR; Metal–semiconductor system; Quantum dot