Nanoplasmonic Sensor Based on Surface Plasmon-Coupled Emission: Review

Abstract

The surface plasmon resonance (SPR) technique is a powerful method to detect chemical molecules. Fluorescent spectroscopy is a subject of great interest in the field of material science and biology. Recently, some optical sensors, based on plasmonic properties of nanomaterial, were introduced to enhance the investigation of the interaction of molecular while detecting the low concentration of molecular. The surface plasmon-coupled emission (SPCE) technique is a merit and accurate method to evaluate the interaction of nanomaterials and molecular. SPCE is based on fluorescence properties of interest molecule, and the surface plasmon enhances the fluorescence signal. According to SPR theory, the condition of excitation of fluorophore could be used in obtaining the SPCE signal. SPCE can be used to detect toxic chemicals and investigate the human molecular. In this review, the theory, experimental setup, condition of SPCE, and role of metal nanoparticles in SPCE were reviewed. In the end, the application of SPCE was presented for detection and monitoring the chemical material, heavy metal, and biologic molecules.

Sensitive Detection of Dengue Virus Type 2 E-Proteins Signals Using Self-Assembled Monolayers/Reduced Graphene Oxide-PAMAM Dendrimer Thin Film-SPR Optical Sensor

“…7 (see vertical distance). It can also be mentioned the obtained thickness is nearer to the most typical configuration in the SPR system with a 50 nm gold film, which is responsive to the local gold-dielectric interface [85][86][87] .…”

Polysiloxanes Modified by Thiol‐Ene Reaction and Their Interaction with Gold Nanoparticles

“…We focused on the conversion of the vinyl function and the grafting position of the thiol on this function (in α or β position relative to the silicon atom). For the 2-phenylethane-1thiol (5) and for the fluorinated thiol 6, the reaction occurred at 100 % on the carbon in β of the silicon atom, but in the case of N-methyl-2-sulfanylacetamide (4), 14 % of the thiol-ene reaction occurred on the carbon in α of the silicon, which can be quantified by 1 H-NMR ( Figure 2 and Supporting Information, SI-2). The results are reported in Table 1.…”

“…Yield: 71 %. 1 29 Si-NMR (CDCl 3 + 0.03 M Cr(acac) 3 ): À 20 to À 23 (m, Si (CH 3 ) 2 , 2 Si); À 23 to À 26 (m, SiCH 3 (CH 2 À CH 2 À SÀ ), 1 Si). 13 C-NMR (CDCl 3 ): 170 (CO); 36.3 (SÀ CH 2 À CO); 28.5-27.5 (SiÀ CH 2 À CH 2 À S); 26.9 (CH 3 À NH); 18.2 (SiÀ CH 2 À CH 2 À S); 2.1, 1.6 -1.2, 0.4 to À 0.2 (H 3 CÀ Si).…”

“…Yield: 50 %. 1 3 À NHCO, SÀ CH 2 À CH 2 À C arom , SÀ CH 2 À CH 2 À C arom , 7 H); 2.70 -2.50 (m, SiÀ CH 2 À CH 2 À S, 4 H); 1.00 -0.80 (m, SiÀ CH 2 À CH 2 À S, 4 H); À 0.1 to 0.25 (m, H 3 CÀ Si, 52 H). 29 Si-NMR (CDCl 3 + 0.03 M Cr(acac) 3 ): 7 to 8 (m, (CH 3 ) 3 SiÀ O, 0.1 Si); À 20 to À 23 (m, OÀ (CH 3 ) 2 À SiÀ O, 3 Si); À 23 to À 27 (m, CH 3 (CH 2 À CH 2 S) SiÀ OÀ , 1 Si).…”

“…In recent years, the interest in nanomaterials based on semiconductors or metals has considerably increased. At this scale, these materials have unique optical, electronic and catalytic properties which are used in many applications (low concentration detection of analytes, catalysis, therapy, diagnosis, tissue engineering, high resolution imaging, electronics, etc .). The use of these nanoparticles for a targeted application often requires modifying their surface by adding an organic or inorganic layer .…”