Abstract
Background: Photodynamic therapy (PDT) has become a very promising and effective strategy for the treatment of cancers and other malignant diseases. In recent years, photosensitizers (PS) with aggregation-induced emission (AIE) property have attracted great attention.
Objective: A high-performance AIE-active PS, E- 1-allyl-3-(2-(5-(4-(diphenylamino)phenyl) thiophene- 2-yl)vinyl)quinoxalin-2 (1H)-one (SJ-1), was synthesized and its PDT effect was preliminarily tested in vitro.
Methods: SJ-1 was designed using a quinoxalinone scaffold as the core chromophore. It could selfassembled into AIE-active nanoparticles with a mean size of 155 nm in aqueous medium and show maximum emission at 633 nm.
Results: SJ-1 nanoparticles at a concentration of 20 µM showed effective reactive oxygen species (ROS) production and could induce almost 90% decrease of cell viability under laser irradiation in Hela and HT-29 cells, with negligible dark toxicity.
Conclusion: In vitro results indicated that SJ-1 may be a potential PS for PDT.
Keywords: SJ-1, nanoparticles, photosensitizer, ROS, AIE, PDT.
Graphical Abstract
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