Room-temperature phosphorescent sodium carboxymethyl cellulose composites with ZnO quantum dots

Abstract

Room-temperature phosphorescent ZnO quantum dots (B-ZnO QDs) with an average lifetime of 415 ms are successfully synthesized via surface modification with 3-aminopropyltriethoxysilane. Compounding with carboxymethyl cellulose extends the phosphorescence lifetime to 0.995 s. At 47.37 wt% ZnO QD loading, the UPF of the composite reaches 482.21, demonstrating exceptional UV shielding performance.