Bloch Surface Wave-Coupled Emission at Ultraviolet Wavelengths

被引：38

作者：

Badugu, Ramachandram ^{[1
]}

Mao, Jieying ^{[2
]}

Blair, Steve ^{[3
]}

Zhang, Douguo ^{[4
]}

Descrovi, Emiliano ^{[5
]}

Angelini, Angelo ^{[5
]}

Huo, Yiping ^{[1
]}

Lakowicz, Joseph R. ^{[1
]}

机构：

[1] Univ Maryland, Sch Med, Ctr Fluorescence Spect, Dept Biochem & Mol Biol, 725 West Lombard St, Baltimore, MD 21201 USA

[2] Univ Utah, Dept Phys & Astron, 50 S Cent Campus Dr, Salt Lake City, UT 84112 USA

[3] Univ Utah, Dept Elect & Comp Engn, 50 S Cent Campus Dr, Salt Lake City, UT 84112 USA

[4] Univ Sci & Technol China, Dept Opt & Opt Engn, Inst Photon, Hefei 230026, Anhui, Peoples R China

[5] Polytech Univ Turin, Dept Appl Sci & Technol, Corso Daca Abruzzi 24, I-10129 Turin, Italy

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2016年 / 120卷 / 50期

基金：

美国国家卫生研究院; 中国国家自然科学基金;

关键词：

METAL-ENHANCED FLUORESCENCE; PHOTONIC CRYSTAL; LABEL-FREE; PLASMONIC NANOANTENNAS; DETECTION INSTRUMENT; QUANTUM DOTS; ALUMINUM; RESONANCE;

D O I：

10.1021/acs.jpcc.6b08086

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The interaction of fluorophores with nearby metallic structures is now an active area of research. Dielectric photonic structures offer some advantages over plasmonic structures, namely, small energy losses and less quenching. We describe a dielectric one-dimensional photonic crystal (1DPC), which supports Bloch surface waves (BSWs) from 280 to 440 nm. This BSW structure is a quartz slide coated with alternating layers of SiO2 and Si3N4. We show that this structure displays BSWs and that the near-UV fluorophore, 2-aminopurine (2-AP), on the top surface of the structure couples with the BSWs. Fluorophores do not have to be inside the structure for coupling and show a narrow angular distribution, with an angular separation of wavelengths. The Bloch wave-coupled emission (BWCE) radiates through the dielectric layer. These BSW structures, with useful wavelength range for detection of intrinsic protein and cofactor fluorescence, provide opportunities for novel optical configurations for bioassays with surface-localized biomolecules and for optical imaging using the coupled emission.

引用

页码：28727 / 28734

页数：8

共 52 条

[21] Enhanced fluorescence from dye molecules by Au nanoparticles on asymmetric double-stranded DNA and mechanism [J].