Enhancing fluorescence of quantum dots by silica-coated gold nanorods under one- and two-photon excitation
作者： Xin Li , Fu-Jen Kao , Chien-Chin Chuang , Sailing He
DOI: 10.1364/OE.18.011335
关键词:
摘要: Nano-composites of quantum dots (QDs) and gold nanorods (GNRs) or silica-coated GNRs (GNRs_SiO2) were synthesized. The attached modify the excitation intensity spontaneous emission QDs through surface plasmonic effects. fluorescence from is enhanced can be optimized by modifying thickness silica coated on GNRs, under both one- two-photon excitations. measurements lifetime demonstrate that enhancement may attributed to matching localized plasmon resonance GNR wavelength. In addition enhancing QD-fluorescence in QD-GNR@SiO2, also present as an effective contrast agent for bio-imaging, light scattering emission, well photo-thermal therapy. composite's multifunctional characteristics are highly valuable exploited bio-applications.
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E. M. Purcell, Spontaneous Emission Probabilities at Radio Frequencies Physical Review D. ,vol. 69, pp. 839- 839 ,(1995) , 10.1007/978-1-4615-1963-8_40
Alexander O. Govorov, Jaebeom Lee, Nicholas A. Kotov, Theory of plasmon-enhanced Förster energy transfer in optically excited semiconductor and metal nanoparticles Physical Review B. ,vol. 76, pp. 125308- ,(2007) , 10.1103/PHYSREVB.76.125308
J. C. Ostrowski, A. Mikhailovsky, D. A. Bussian, M. A. Summers, S. K. Buratto, G. C. Bazan, Enhancement of Phosphorescence by Surface‐Plasmon Resonances in Colloidal Metal Nanoparticles: The Role of Aggregates Advanced Functional Materials. ,vol. 16, pp. 1221- 1227 ,(2006) , 10.1002/ADFM.200500293
Ulf Håkanson, Lavinia Rogobete, Vahid Sandoghdar, Enhancement of single-molecule fluorescence using a gold nanoparticle as an optical nanoantenna. Physical Review Letters. ,vol. 97, pp. 017402- ,(2006) , 10.1103/PHYSREVLETT.97.017402
Jérôme Wenger, Davy Gérard, José Dintinger, Oussama Mahboub, Nicolas Bonod, Evgeny Popov, Thomas W. Ebbesen, Hervé Rigneault, Emission and excitation contributions to enhanced single molecule fluorescence by gold nanometric apertures. Optics Express. ,vol. 16, pp. 3008- 3020 ,(2008) , 10.1364/OE.16.003008
Felicia Tam, Glenn P. Goodrich, Bruce R. Johnson, Naomi J. Halas, Plasmonic enhancement of molecular fluorescence. Nano Letters. ,vol. 7, pp. 496- 501 ,(2007) , 10.1021/NL062901X
Peter Zijlstra, James W. M. Chon, Min Gu, Five-dimensional optical recording mediated by surface plasmons in gold nanorods Nature. ,vol. 459, pp. 410- 413 ,(2009) , 10.1038/NATURE08053
T. Soller, M. Ringler, M. Wunderlich, T. A. Klar, J. Feldmann, H.-P. Josel, Y. Markert, A. Nichtl, K. Kürzinger, Radiative and nonradiative rates of phosphors attached to gold nanoparticles Nano Letters. ,vol. 7, pp. 1941- 1946 ,(2007) , 10.1021/NL070623B
Qiuqiang Zhan, Jun Qian, Xin Li, Sailing He, A study of mesoporous silica-encapsulated gold nanorods as enhanced light scattering probes for cancer cell imaging Nanotechnology. ,vol. 21, pp. 055704- ,(2010) , 10.1088/0957-4484/21/5/055704
E. M. Purcell, H. C. Torrey, R. V. Pound, Resonance Absorption by Nuclear Magnetic Moments in a Solid Physical Review. ,vol. 69, pp. 37- 38 ,(1946) , 10.1103/PHYSREV.69.37