Afterglow Nanoprobes for In-vitro Background-free Biomarker Analysis
Ting Zheng , Ying Wang , Xianming Li , Chenghui Li , Peng Wu
Chemical Research in Chinese Universities ›› 2024, Vol. 40 ›› Issue (2) : 213 -224.
Accurate detection of biomarkers is essential for disease diagnosis. Although the highly sensitive fluorescence probes are feasible for the above goal, it is typically interfered by the auto-fluorescence and light scattering of the biological samples. Photochemical afterglow system (consisting of photosensitizer, afterglow substrate and emitter) based on cascade photochemical reactions exhibits long-lived luminescence (seconds to hours), thus avoiding background interference. With the assistance of polymers, such as polystyrene microspheres, the photochemical afterglow systems have been transformed into homogeneous and water-soluble nanoparticles, and used for in-vitro biomarker analysis. Here, we summarized the principle, preparation and applications of these afterglow nanoparticles, and evaluated their performance in clinical sample testing by comparing with other nanoparticle-based methods. Finally, several problems and possible solutions of afterglow nanoparticle-based methods in biomarker determination were also mentioned.
Photochemical afterglow / In-vitro analysis / Background-free detection / Biomarker
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