Graphene Quantum Dots - from Spectroscopic Performance to 3d Printing Applications and Interaction Studies with Normal and Cancer Cells

In the present study, different types of commercially available graphene quantum dots (GQDs were investigated to understand their spectroscopic properties. Their morphological and size analyse were also performed. Their mechanism of action in radical photopolymerization processes was evaluated. The obtained materials proved to be useful in developing efficient photoinitiating systems for 3D printing applications. In addition, the cytotoxicity of GQDs was studied and their effects on living cells were investigated. We demonstrated that GQDs not only can act as efficient photoinitiators, but as constituents of hydrogels express very low toxicity and may interact with cells. The latter creates the possibility of studying them in the future as useful modern biosensors.本研究针对多款市售石墨烯量子点（Graphene Quantum Dots，GQDs）开展系统性探究，以明晰其光谱特性。同时还对其形貌与尺寸特征进行了表征，并评估了其在自由基光聚合过程中的作用机制。所制备的材料被证实可用于开发适用于3D打印的高效光引发体系。此外，本研究还考察了GQDs的细胞毒性及其对活细胞的影响。结果表明，GQDs不仅可作为高效光引发剂，作为水凝胶的组分之一时还表现出极低的细胞毒性，且能够与细胞发生相互作用。这一发现为未来将其作为实用的新型生物传感器开展相关研究提供了可能性。