Minimizing the fluorescence quenching caused by uncontrolled aggregation of CdSe/CdS core/shell quantum dots for biosensor applications
作者: Taegyeong KangKiju UmJinmo ParkHochan ChangDoh C. LeeChang-Koo KimKangtaek Lee
作者单位: 1Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, Republic of Korea
2Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Republic of Korea
3Department of Chemical Engineering and Department of Energy Systems Research, Ajou University, Republic of Korea
刊名: Sensors & Actuators: B. Chemical, 2016, Vol.222 , pp.871-878
来源数据库: Elsevier Journal
DOI: 10.1016/j.snb.2015.09.036
关键词: Quantum dotFluorescence quenchingEnergy transferAggregationBiosensor
原始语种摘要: Abstract(#br)The fluorescence quenching of CdSe/CdS core/shell quantum dots (QDs) with various shell thicknesses is investigated. Inducing aggregation of the core/shell QDs with the addition of NaCl shows that the fluorescence quenching efficiency decreases monotonically as the CdS shell thickness increases because of the reduced spectral overlap between the emission and absorption spectra. In addition, hybridization between the oligonucleotide-functionalized QDs and its complementary DNA with the fluorescent dye is used to study the fluorescence quenching caused by the Förster resonance energy transfer (FRET) and any uncontrolled aggregation. These experiments allow quantitative estimation of the effects of FRET and uncontrolled aggregation on the fluorescence quenching efficiency, which...
全文获取路径: Elsevier  (合作)
影响因子:3.535 (2012)

  • quenching 猝熄
  • uncontrolled 无控制
  • shell 贝壳
  • fluorescence 荧光
  • complementary 补的
  • aggregation 聚集
  • applications 应用程序
  • fluorescent 萤光的
  • minimize 最小化
  • hybridization 混合酌