Fluorescence quenching of quantum dots by gold nanorods and its application to DNA detection

Xin Li; Jun Qian; Li Jiang; Sailing He
February 2009
Applied Physics Letters;2/9/2009, Vol. 94 Issue 6, pN.PAG
Academic Journal
Gold nanorods (GNRs) with different localized surface plasmon resonance (LSPR) peaks and different thicknesses of polymer-coating were synthesized to validate that the distinct GNR-based quenching process of quantum dot (QD) emission follows the metal surface energy transfer theory. The quenching efficiency is directly related to the spectral overlap of GNR-LSPR absorption and QD-emission, as well as the separation distance between the two nanoparticles. GNRs are advantageous for DNA conjugation, and the high efficiency of GNR-QD quenching system was utilized for sensitive DNA detection.


Related Articles

  • Impact of spectral broadening on plasmonic enhancement with metallic gratings. Feng, Xue; Cui, Kaiyu; Liu, Fang; Huang, Yidong // Applied Physics Letters;9/17/2012, Vol. 101 Issue 12, p121102 

    The Purcell factor (PF) of the propagating surface plasmon polariton (SPP) mode on metallic grating is evaluated with full integration formula of Fermi's golden rule, while both spontaneous emission linewidth of single quantum dot and the spectrum broadening of photonic density of state (DOS)...

  • Quantum dots: Driven to perfection. Santori, Charles; Yamamoto, Yoshihisa // Nature Physics;Mar2009, Vol. 5 Issue 3, p173 

    The article comments on two papers published within the issue, which demonstrate how to fully overcome the difficulty of exciting and collecting at the same wavelength. According to the authors, the papers used neutral and charged single quantum dots to show direct detection of resonance...

  • Fluorescence Analysis in Microarray Technology. Nagl, Stefan; Schaeferling, Michael; Wolfbeis, Otto S. // Microchimica Acta;Sep2005, Vol. 151 Issue 1/2, p1 

    Fluorescence has been the preferred choice for data quantification in biomedical microarray formats since their earliest days. As much as the formats have grown and evolved over the years, the methods in optical analysis have become ever more sophisticated and complex in order to produce more...

  • Spin-resolved quantum-dot resonance fluorescence. Nick Vamivakas, A.; Yong Zhao; Chao-Yang Lu; Atatüre, Mete // Nature Physics;Mar2009, Vol. 5 Issue 3, p198 

    Confined spins in self-assembled semiconductor quantum dots promise to serve both as probes for studying mesoscopic physics in the solid state and as stationary qubits for quantum-information science. Moreover, the excitations of self-assembled quantum dots can interact with near-infrared...

  • Plasmon-controlled narrower and blue-shifted fluorescence emission in (Au@SiO)SiC nanohybrids. Sui, Ning; Monnier, Virginie; Zakharko, Yuriy; Chevolot, Yann; Alekseev, Sergei; Bluet, Jean-Marie; Lysenko, Vladimir; Souteyrand, Eliane // Journal of Nanoparticle Research;Aug2012, Vol. 14 Issue 8, p1 

    Fluorescent imaging is a key tool in biology. On one hand, organic dyes are subjected to bleaching; while, on the other hand II-VI semiconductor quantum dots are photostable, but may exhibit some toxicity. Silicon carbide nanoparticles (SiC NPs) are a good alternative as SiC is chemically inert...

  • Influence of a finite-length metallic carbon nanotube on the spontaneous decay of an emitter's excited state. Nemilentsau, A. M.; Ya. Slepyan, G.; Maksimenko, S. A.; Lakhtakia, A.; Rotkin, S. V. // AIP Conference Proceedings;10/7/2010, Vol. 1291 Issue 1, p73 

    The spontaneous decay of an emitter's excited state is crucially affected in the far- and mid-infrared ranges by the antenna resonances of the surface plasmon waves in a nearby metallic finite-length single-wall carbon nanotube (SWNT). Pronounced resonances exist in the spectra of the total and...

  • Detuning-dependent narrowing of Mollow triplet lines of driven quantum dots. Saiko, A.; Fedaruk, R.; Markevich, S. // Journal of Experimental & Theoretical Physics;Apr2014, Vol. 118 Issue 4, p655 

    We study the two-time correlation function and the resonance fluorescence spectrum of a semi-conductor quantum dot excited by a strong off-resonant laser pulse. The obtained analytic expressions exhibit a specific detuning-dependent damping of Rabi oscillations of the dressed quantum dot as well...

  • Semiconductor quantum dots and metal nanoparticles: syntheses, optical properties, and biological applications. Biju, Vasudevanpillai; Itoh, Tamitake; Anas, Abdulaziz; Sujith, Athiyanathil; Ishikawa, Mitsuru // Analytical & Bioanalytical Chemistry;Aug2008, Vol. 391 Issue 7, p2469 

    We review the syntheses, optical properties, and biological applications of cadmium selenide (CdSe) and cadmium selenide–zinc sulfide (CdSe–ZnS) quantum dots (QDs) and gold (Au) and silver (Ag) nanoparticles (NPs). Specifically, we selected the syntheses of QDs and Au and Ag NPs in...

  • Förster Resonance Energy Transfer between Quantum Dot Donors and Quantum Dot Acceptors. Chou, Kenny F.; Dennis, Allison M. // Sensors (14248220);Jun2015, Vol. 15 Issue 6, p13288 

    Förster (or fluorescence) resonance energy transfer amongst semiconductor quantum dots (QDs) is reviewed, with particular interest in biosensing applications. The unique optical properties of QDs provide certain advantages and also specific challenges with regards to sensor design, compared...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics