Serra Vanda Vaz, Serra Sofia G, Vallejo Mariana C S, Paulo Pedro M R, Moura Nuno M M, Botequim David, Neves Maria Graça P M S, Costa Sílvia M B
Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
Nanomaterials (Basel). 2022 Mar 5;12(5):872. doi: 10.3390/nano12050872.
Dual probe porphyrin-gold nanorod polyelectrolyte microcapsules were developed to explore the enhancing effects of a plasmonic interface of self-assembled gold nanoparticles in the fluorescence emission from porphyrins loaded into the capsules' core. An analysis of fluorescence lifetime imaging microscopy (FLIM) data reports a notable 10-10-fold increase in the maximum detected photon rates from diffraction-limited spots and an overall six-fold increase in fluorescence as averaged over the whole microcapsule area. Large emission enhancements were correlated with decreases in fluorescence lifetimes. The microcapsule's design proved effective in achieving high fluorescent hybrids and may shed light on new possibilities for advanced materials imaging applications.
开发了双探针卟啉-金纳米棒聚电解质微胶囊,以探索自组装金纳米颗粒的等离子体界面在加载到胶囊核心的卟啉荧光发射中的增强作用。荧光寿命成像显微镜(FLIM)数据分析报告显示,来自衍射极限光斑的最大检测光子率显著提高了10-10倍,整个微胶囊区域的平均荧光总体增加了6倍。大的发射增强与荧光寿命的降低相关。微胶囊的设计被证明在实现高荧光杂化物方面是有效的,并且可能为先进材料成像应用带来新的可能性。