Synthesis, characterization and thermal studies of NIR fluorescent probe based on poly(anthranilicacid)/sand nanocomposite.

Autor: Anbarasan, R., Mary, M. Kenet Nancy, Jancirani, A., Baskaran, R., Hanish Anand, S.
Předmět:
Zdroj: Polymer Bulletin; Oct2024, Vol. 81 Issue 15, p14083-14104, 22p
Abstrakt: Electrically conducting polymers are increasingly being used as NIR fluorescence probes in the area of biomedical engineering via the application of a structural modification process. Peroxydisulphate (PDS) initiated the chemical polymerization process of anthranilicacid (AnA) in a nitrogen atmosphere at a temperature of 0–5 °C. Rosebengal (RB) was used as an end capping agent, and vigorous stirring was maintained with and without sand. The produced polymer and its nanocomposite were examined using instruments for UV–visible, TGA, DSC, SEM, EDX, FTIR, CV, FES, HRTEM, and XRD. The thermal stability of the resulting polymers was investigated using non-isothermal degradation kinetics. Additionally, the thermodynamic parameter values were determined. In the 3% weight Sand loaded PAnA system, a conductivity value of 4.31 × 10−2 S/cm was recorded, signifying a 90.3% yield percentage. Sand was added, and this resulted in an increase in the rate of polymerization (Rp) of anthranilicacid to 1.8 × 10–4 mol/lit/sec. A peak at 507 cm−1 in the FTIR spectrum confirmed the metal-oxide stretching of nano Sand. The PAnA/sand nanocomposite system has a higher photo-conversion efficiency of 1.49 percent as compared to the RB end capped PAnA system. The UV–visible spectrum and emission spectrum showed peaks around 750 nm. The experimental results are scrutinized closely and compared to values reported in the literature. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index