Druță, AlexandrinaLungu, IonPopușoi, AnaPotlog, TamaraBulmaga, PetruRusnac, Roman2025-03-182024DRUȚĂ, Alexandrina; Ion LUNGU; Ana POPUSHOI; Tamara POTLOG, Petru BULMAGA and Roman RUSNAC. Spectroscopic properties of ZnPc(Cooh)4/Ch/Fe3O4 supramolecular architectures. In: Integrare prin cercetare și inovare: conferință științifică națională cu participare internațională. Științe exacte și ale naturii, Chișinău, 7-8 noiembrie, 2024. Chișinău: CEP USM, 2024, pp. 570-576. ISBN 978-9975-62-808-2 (PDF). Disponibil: https://doi.org/10.59295/spd2024n.79https://doi.org/10.59295/spd2024n.79https://msuir.usm.md/handle/123456789/17106This paper presents the synthesis of ZnPc(COOH)4/Ch/Fe3O4 supramolecular architectures at various ZnPc(COOH)4 and Ch/Fe3O4 concentrations explored in the synthesis process. Ch/Fe3O4 composite was prepared by a simple solution mixing-evaporation method. The validation of the synthesis was achieved through FTIR analysis and UV-Vis spectroscopy. FTIR of composite indicated an interaction between chitosan and Fe3O4 NPs. The chemical interaction of ZnPc(COOH)4 with Ch/F3O4 composite is confirmed by the shift of the signal from ν(C=O)) of protonated COOH groups in the FTIR spectrum of ZnPc(COOH)4, associated with spitting, to (νsym(COO)) and (νasym(COO)) that correspond to deprotonated carboxylic group. The absorption spectra of ZnPc(COOH)₄ revealed IR Q band with two subbands situated at 640 nm 700 nm. Also, the effect of various ZnPc(COOH) and Ch/Fe3O4 concentrations on absorbance of ZnPc(COOH)4/Ch/Fe3O4 supramolecular architecture is discussed.enZnPc(COOH)4 derivativeCh/Fe3O4 compositeadsorptionself-assembly methodArticlehttps://doi.org/10.59295/spd2024n.79