Details

Autor(en) / Beteiligte

• Weng, Yu‐Hua
• Xu, Lin‐Tao
• Liu, Qian
• Cao, Shuo‐Hui
• Chen, Min
• Zhai, Yan‐Yun
• Xie, Kai‐Xin
• Wang, Zheng‐Chuang
• Ghorai, Shyamal Kr
• Li, Yao‐Qun

Titel

Influence of Sample Thickness on Surface Plasmon Coupled Emission (SPCE) over a Large Range in Water

Ist Teil von

• Physica status solidi. A, Applications and materials science, 2018-09, Vol.215 (18), p.n/a

Ort / Verlag

Weinheim: Wiley Subscription Services, Inc

Erscheinungsjahr

2018

Quelle

Wiley Online Library

Beschreibungen/Notizen

• The distance dependence of surface plasmon coupled emission (SPCE) has not been intensively studied in water, though most biological events, biosensing, and chemical reactions happen in aqueous media. Taking Rhodamine B (RhB) in poly(methyl methacrylate) (PMMA) film as a model fluorescent sample, the authors characterize the optical properties of the SPCE in water using scanning angle fluorescence spectroscopy with Kretschmann (KR) excitation over a large sample thickness range up to 2000 nm. A big difference is observed between the distribution of the incident angle or the emission angle in water and that in air for films of the same thickness. The distance dependence of SPCE in water differes greatly from that in air, with fewer angular positions distributed in narrower angle range. A sound understanding of the influence of sample thickness on SPCE in different media could provide a guideline in experimental designs and reduce the cost of trial‐and‐error for the application of SPCE in sensor designing, bioanalysis, and in situ assessment. The dependence of surface plasmon coupled emission (SPCE) fluorescence on the distance between a dye molecule and a metallic surface is studied thoroughly over a large sample thickness range up to 2000 nm in water. The investigation can be useful for applying SPCE in sensor designing, bioanalysis, and in situ assessment as most chemical or biological events happen in aqueous media.