[2L11-9]
Controlling the Size of Conjugated Polymer Nanoparticles for Efficient and Robust Visible-Light Photocatalysis
발표자김승현 (대구경북과학기술원)
연구책임자김승현 (대구경북과학기술원)
Abstract
Conjugated polymer-based photocatalysts offer promising opportunities for sustainable chemical transformations under visible light. However, their efficiency is hampered by limited exciton utilization and instability. In this talk, we demonstrate size reduction in the polymer photocatalysts serves as a unified strategy to enhance both reactivity and stability across two distinct systems: conjugated microporous polymers (CMPs) and vinylene-linked covalent organic frameworks (COFs). In CMPs, dispersion polymerization enabled size-controlled synthesis of well-dispersed nanoparticles (15–180 nm), leading to over 10-fold improvement in photocatalytic reactivity. In vinylene-linked COFs, we suppressed photo-induced degradation pathway by reducing nanoparticle size, achieving a 5-fold increase in operational stability. These studies highlight how precise control over nanoparticle size can unlock new regimes of performance in polymer photocatalysts.