Fabrication of PEGylated graphitic carbon nitride quantum dots as traceable, pH-sensitive drug delivery systems

Abstract

Fluorescent PEGylated carbon nitride quantum dots are synthesized and characterized for traceable drug delivery and cell imaging.

Preparation of a pH‐responsive chitosan‐montmorillonite‐nitrogen‐doped carbon quantum dots nanocarrier for attenuating doxorubicin limitations in cancer therapy

“…On the other hand, their optical and electronic properties can be tuned to emit a broad range of visible regions [33]. Extensive studies have been conducted on semiconducting quantum dots, with recent attention and advances in nanoparticle surface chemistry to seize new opportunities for developing pH-responsive nanocarriers using biopolymers and NCQDs [34]. Zavareh et al fabricated chitosan-carbon quantum dots-aptamer as a carrier of 5-fluorouracil.…”

Facile synthesis of carbon nitride quantum dots as a highly selective and sensitive fluorescent sensor for the tetracycline detection

“…The large peak from 200 to 270 nm with a shoulder centered at 262 nm is from p-p* electronic transition of the tri-s-triazine ring in graphitic carbon nitride. 47,48 Furthermore, another broad peak appears between 300 and 340 nm because of n-p* electronic transition of the C-N bond in the heptazine heterocycle structure. 45 The excitation spectrum exhibits a maximum peak at 325 nm, and an emission peak emerges at 394 nm when g-C 3 N 4 QDs are excited at this maximum excitation wavelength.…”

Graphitic carbon nitride-based nanocomposites and their biological applications: a review

“…ROS include oxygen ions, peroxide and oxygen free radicals. 22 These particles are quite small, and due to the presence of unpaired free electrons, ROS are also very active. High levels of ROS will cause cell and gene structure damage (Fig.…”