Zhang Yongxia, Aslan Kadir, Previte Michael J R, Geddes Chris D
Institute of Fluorescence, Laboratory for Advanced Medical Plasmonics, Medical Biotechnology Center, University of Maryland Biotechnology Institute, 725 West Lombard St, Baltimore, MD, 21201, USA.
Chem Phys Lett. 2006 Dec 11;432(4-6):528-532. doi: 10.1016/j.cplett.2006.11.005.
In this paper, we report the first observation of metal-enhanced S(2) emission at room and low temperature (77K). The S(2) emission intensity of Azulene is enhanced by close proximity to Silver island films (SiFs). In this regard, a ≈ 2-fold higher S(2) fluorescence intensity of Azulene was observed from SiFs as compared to a glass control sample. This suggests that S(2) excited states can couple to surface plasmons and enhance S(2) fluorescence yields, a helpful observation in our understanding the interactions between plasmons and lumophores, and our continued efforts to develop a unified plasmon-lumophore/fluorophore theory.
在本文中,我们报告了首次在室温及低温(77K)下观测到金属增强的S(2)发射。通过与银岛膜(SiFs)紧密相邻,薁的S(2)发射强度得以增强。在这方面,与玻璃对照样品相比,从银岛膜中观测到薁的S(2)荧光强度高出约2倍。这表明S(2)激发态可与表面等离子体耦合并提高S(2)荧光产率,这一观测结果有助于我们理解等离子体与发光体之间的相互作用,以及我们为发展统一的等离子体-发光体/荧光团理论所做的持续努力。