Company Filing History:
Years Active: 2018-2019
Title: Innovations of Shi Fang in Quantum Dot Technology
Introduction
Shi Fang is an accomplished inventor based in Philadelphia, PA, known for his significant contributions to the field of quantum dot technology. With a total of two patents, his work focuses on the synthesis and application of tin sulfide quantum dots for in vivo near-infrared imaging.
Latest Patents
Shi Fang's latest patents include a groundbreaking method for synthesizing capped SnS quantum dots (QDs) through an aqueous approach. This innovative technique involves attaching one or more extending molecules to the capping molecule via peptide bond formation at elevated temperatures. The capped SnS QDs are characterized by a molar ratio of capping molecule:Sn:S ranging from 16:3:1 to 16:12:1. A suspension of these QDs is heat-treated at 200°C for a duration of 0.5 to 4 hours. The resulting SnS QDs exhibit a near-infrared emission peak at 820-835 nm, with an excitation wavelength of 690 nm. Initially, the synthesized SnS QDs demonstrate a high positive zeta potential of approximately 30 mV, which can be toxic to cells. However, by neutralizing the SnS QDs, the cytotoxicity is reduced to an acceptable level. Notably, the heat-treatment step can be bypassed by incorporating a glycerol solution containing Sanions and capping molecules into a glycerol solution of Snions.
Career Highlights
Shi Fang is affiliated with Drexel University, where he continues to advance his research in quantum dot technology. His innovative work has garnered attention in the scientific community, contributing to the understanding and application of nanomaterials in medical imaging.
Collaborations
Shi Fang collaborates with notable colleagues, including Wei-Heng Shih and Wan Y Shih, who contribute to his research endeavors and enhance the collaborative environment at Drexel University.
Conclusion
Shi Fang's contributions to the field of quantum dot technology exemplify the innovative spirit of modern science. His patents and research efforts pave the way for advancements in medical imaging and nanotechnology.