研究目的
To study the effect of plasmonic enhancement of dye fluorescence in poly(vinyl butyral) films containing Ag/SiO2 core-shell nanoparticles and to evaluate the influence of the size and concentration of the nanoparticles on the degree of enhancement of the fluorescence of a dye with a high quantum yield in such nanocomposites.
研究成果
The incorporation of plasmonic nanoparticles into polymer films significantly enhances dye fluorescence, with the effect size depending on nanoparticle size, concentration, and dye quantum yield. The study provides insights into the mechanisms of plasmonic enhancement and suggests potential applications in sensors and emitting media.
研究不足
The study primarily focuses on the interaction of fluorophores with nanoparticles in three-dimensional ensembles, which is less common in the literature compared to two-dimensional ensembles. The internal filter effect at high optical densities was a technical constraint that required correction.
1：Experimental Design and Method Selection:
The study involved the synthesis of Ag/SiO2 core-shell nanoparticles and their incorporation into poly(vinyl butyral) films containing different dyes. The fluorescence enhancement was studied using spectrophotometry and spectrofluorimetry.
2：Sample Selection and Data Sources:
Silver nitrate, tetraethoxysilane, poly(vinylpyrrolidone), poly(vinyl butyral), and dyes (coumarin 7, curcumin, eosin B) were used. The nanoparticles were characterized using HRTEM.
3：List of Experimental Equipment and Materials:
High-resolution transmission electron microscope (Leo 912 AB Omega), double-beam spectrophotometer (Evolution 300), spectrofluorimeter (Cary Eclipse G9800), atomic force microscope (Multimode V), centrifuge (320R).
4：Experimental Procedures and Operational Workflow:
The nanoparticles were synthesized, characterized, and incorporated into polymer films. The optical properties of the films were then analyzed.
5：Data Analysis Methods:
The fluorescence enhancement was quantified, and the data were corrected for the internal filter effect.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
