[7p-N206-1~9] 9.2 Nanoparticles, Nanowires and Nanosheets

3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[7p-N206-7] Ligand exchange and characterization of CsPbBr₃ PeQD utilizing equilibrium states

〇Shion Kaneko¹, Takumi Kanazawa¹, Kazushi Enomoto², Moriya Kikuchi³, Seigou Kawaguchi¹ (1.Grad. Sch. of Org Mat, Yamagata Univ.,, 2.RIKEN CEMS, 3.Yamagata Univ.,)

Keywords:

Perovskite quantum dots

Cesium lead bromide quantum dots (CsPbBr₃ PeQDs) are promising materials for optoelectronic applications. In this study, we developed a method to simultaneously remove impurities and exchange ligands using ultracentrifugation without employing polar solvents. The effectiveness of purification was confirmed by ¹H NMR, and changes in photoluminescence properties depending on ligand types were evaluated. Notably, redshifts observed in the absorption spectra of PeQDs with short-chain and aromatic ligands suggest enhanced electronic coupling.