|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||2018 Symposium on Functional Nanomaterials: Discovery and Integration of Nanomaterials
||Large Scale Synthesis of Highly Fluorescent CuInS2/ZnS Quantum Dots - Porphyrin Conjugates for Photodynamic Therapy
||Ncediwe Tsolekile, Mangaka Matoetoe, Oluwafemi Samuel Oluwatobi, Sandile Phindile Songca
|On-Site Speaker (Planned)
Ternary CuInS2 (CIS) QDs have been extensively investigated for bioimaging due to their low toxicity compared to cadmium based QDs. However, these QDs have been majorly synthesized in organic medium which is not ecofriendly. Thus, we herein report large scale green synthesis of CIS/ZnS core/shell QDs. The synthesis was performed in a pressure cooker at 95 oC with water as solvent. The as-synthesised core CIS emitted at 538 nm which was tuned to 619 nm after ZnS shell formation. This is a novel result compared to all the reported works on this type of material which usually resulted in blue-shifting. The transmission electron microscopy showed the CIS/ZnS QDs are small, mono-dispersed and spherical with an average particle diameter of 3.5 nm. Conjugation of the QDs to porphyrin increased the solubility and the optical properties of the porphyrin thus, making the conjugate viable for photodynamic therapy application with high singlet oxygen.
||Planned: Supplemental Proceedings volume