Unveiling the Photocatalytic Activity of Carbon Dots/g-C3N4 Nanocomposite for the O-Arylation of 2-Chloroquinoline-3-carbaldehydes

Visible-light-active, organic, heterogeneous photocatalysts offer an ecologically friendly and sustainable alternative to traditional metal-based catalysts. In this work, we report the microwave synthesis of nanocarbon dots (CDs), loaded with graphitic carbon nitride (g-C3N4). The fabricated nanocomposite was shown exhibit various properties, such as Schottky heterojunction. optical functional group analysis, surface morphology, crystallinity, chemical stability, electronic pore size distribution synthesized were analyzed by Ultraviolet-Diffuse Reflectance Spectroscopy (UV-DRS), Photoluminescence (PL), Fourier Transform Infrared (FTIR), Transmission Electron Microscopy (TEM), X-Ray Diffraction (XRD), Zeta potential, Photoelectron (XPS), Brunauer–Emmett–Teller (BET). Until now, best our knowledge, there have been no reports published on light-assisted O-arylation 2-chloroquinoline-3-carbaldehyde. Therefore, explored photocatalytic activity in production O-arylated This facile technique uses a blue LED light source non-conventional operates under moderate conditions, resulting useful products. experimental data shows good recyclability catalyst for up five cycles without loss catalytic activity, simple operational protocol, easy recoverability catalyst, product yields (65–90%) within 12–24 h. Additionally, preliminary mechanistic investigations are discussed. results show that phenoxy quinoline-3-carbaldehyde radicals generated upon irradiation during course reaction responsible C-O bond formation, which O-arylation. present study clearly indicates 0D/2D nanocomposites bright future metal-free, suitable organic reactions.