Fluorescent CQD-Doped Styrene Acrylic Emulsion Coating Film with Enhanced Optical Properties

Abstract

Styrene acrylic emulsions (SAEs) have emerged as a promising material for water-based coatings. However, they are still limited by their own defects in practical applications, poor weatherability, and degradation of performance at lower or higher temperatures. Here, we introduce a facile approach to producing fluorescent carbon quantum dots (CQDs) from wood processing residues and fabricating fluorescent CQD/SAE coating films via emulsion-casting. The addition of the fluorescent CQDs enhanced the optical performance of the CQD/SAE coating films. The fluorescent CQDs were prepared via a hydrothermal approach and were obtained after heating at 180 °C for 6 h at a reaction concentration of 50 mg/mL. The synthesized CQDs resulted in a high fluorescence, and the CQDs had an average size of 1.63 nm. Various concentrations of the fluorescent CQDs were doped into the SAE coating film, which improved its optical properties. We also characterized and discussed the products and then explored their optical properties. This study presents the potential of fluorescent CQD/SAE coating films for applications in anti-counterfeiting coatings, fluorescent adhesives, and papermaking.

Aloe vera gel (Aloe barbadensis miller) derived self-assembled flower-shaped carbon quantum dot interface for ultra-sensitive electrochemical detection of the endocrine disruptor bisphenol-A

“…28 Due to these properties, CQDs find extensive applications in solar cells, photocatalysis, 29 luminescent devices, and fluorescent probes. 19,30 This article discusses a green synthesis method for preparing CQDs using Aloe barbadensis miller (Aloevera) gel and the development of a chemical sensor for detecting BPA. The preparation process is cost-effective, time-efficient, straightforward, and simple.…”

“…28 Due to these properties, CQDs find extensive applications in solar cells, photocatalysis, 29 luminescent devices, and fluorescent probes. 19,30…”