https://doi.org/10.1140/epjp/s13360-024-05404-8
Regular Article
Structural, optical, photoluminescence, and DFT studies of polyvinyl alcohol/carboxymethyl cellulose/copper tungstate hybrid metalorganic nanocomposite
1
Department of Chemistry, College of Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
2
Department of Physics, Faculty of Science, Tabuk University, 71491, Tabuk, Saudi Arabia
3
Department of Physics, College of Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
4
Department of Chemistry, Faculty of Science, Tabuk University, 71474, Tabuk, Saudi Arabia
5
Department of Chemistry, Faculty of Science, Taibah University, 30799, Yanbu, Saudi Arabia
6
Department of Chemistry, Faculty of Science, Mansoura University, El-Gomhoria Street, 35516, Mansoura, Egypt
h n_elmetwaly00@yahoo.com, nmmohamed@uqu.edu.sa
Received:
5
January
2024
Accepted:
27
June
2024
Published online:
19
July
2024
This study investigates the synthesis and characterization of novel organic–inorganic hybrid nanocomposites composed of polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), and copper tungstate (CuWO4) nanoparticles. The nanocomposites were successfully fabricated using a solution casting method with varying CuWO4 mass fractions (0 up to 20 wt%). ATR-FTIR spectroscopy confirmed the formation of intermolecular hydrogen bonding between PVA and CMC, while XRD analysis revealed the preservation of CuWO4 crystal structure within the polymer matrix. UV–Vis spectroscopy demonstrated that incorporating CuWO4 enabled tuning of optical properties, with the indirect bandgap decreasing from 4.11 to 3.08 eV and the refractive index changing from 1.463 to 1.402 as CuWO4 content increased. Photoluminescence studies showed tunable emission with prominent peaks at 412, 435, and 465 nm, attributed to various electronic transitions within the CuWO4 structure. Density Functional Theory (DFT) simulations provided complementary insights into the frontier orbital distributions and electronic structure of the PVA/CMC blend. This comprehensive study demonstrates the potential of PVA/CMC-CuWO4 hybrid nanocomposites for tailored optoelectronic applications, offering a versatile platform for developing materials with customizable optical, luminescent, and electronic properties.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
