College of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China.
College of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China.
Mater Sci Eng C Mater Biol Appl. 2017 Oct 1;79:76-83. doi: 10.1016/j.msec.2017.05.013. Epub 2017 May 4.
In this paper, the environment-friendly, water-soluble carbon dots (CDs) with stable photoluminescence (PL) have been prepared via the one-step pyrolysis of lotus leaf. Then the as-prepared CDs containing abundant hydroxylic and carboxylic groups were employed as cocatalyst with tartaric acid (TA) in ring-opening polymerization (ROP) of ε-caprolactone (ε-CL). The low-toxic organic acid TA, as main catalyst, was used to catalyze the ROP of ε-CL efficiently. The fluorescent CDs@PCL hybrids were obviously hydrophobic and they exhibited an excellent biocompatibility, and biodegradability due to the existence of PCL. Therefore the hydrophobic, biodegradable and multi-color fluorescent CDs@PCL hybrids may have potential applications in biomedicine, photocatalyst, bioimaging, and environmental analysis. Furthermore the application of CDs in catalyzing and initiating polymerization reaction will exemplify the versatility of CDs in the most unexpected fields.
本文通过一步热解荷叶制备了环境友好、水溶性好且光稳定性强的碳点（CDs）。然后，将制备的富含羟基和羧基的 CDs 作为共催化剂，与酒石酸（TA）一起用于ε-己内酯（ε-CL）的开环聚合（ROP）中。低毒有机酸 TA 作为主要催化剂，可高效催化 ε-CL 的 ROP。荧光 CDs@PCL 杂化物由于 PCL 的存在明显疏水，且具有良好的生物相容性和生物降解性。因此，由于 PCL 的存在，这些疏水、可生物降解和多色荧光 CDs@PCL 杂化物在生物医学、光催化剂、生物成像和环境分析等领域可能具有潜在的应用。此外，CDs 在催化和引发聚合反应中的应用将证明 CDs 在最意想不到的领域中的多功能性。
