biostudies-literatureUnknown10(34)Das AThe present research reports the synthesis of poly-[ethylene oxide]-based composite films (500 μm) containing metal nanoparticles (NPs) [Ag⁰ (<i>d</i> _p ∼ 6 nm), Cu⁰ (<i>d</i> _p ∼ 25 nm), and Fe⁰ (<i>d</i> _p ∼ 35 nm)] as the mobile phase. The novelty of the study is in the corroboration of a plausible mechanism for the generation of metal NPs through green synthesis using herbal extracts of <i>Camellia sinensis</i> (Tea) and <i>Azadirachta indica</i> (Neem). Density functional theory (DFT) is used to optimize the phytoreductants present in both biosources, wherein the reducing and/or stabilizing functional entities are primarily hydroxyl groups (-OH). The transition energy (band gap, Δ<i>E</i> _|LUMO-HOMO|) is founACS omega38609-38628https://www.ebi.ac.uk/biostudies/studies/S-EPMC12409529biostudies-literatureGreen Chemistry-Assisted Synthesis of Metal Nanoparticles and Fabrication of Microstructurally Engineered Conductive and Endurable M&lt;sup&gt;0&lt;/sup&gt;@PEO Functional Films.PMC12409529Biswas SMajee RMukhopadhyay JMukhopadhyay MNinave GDasgupta SDutta AKBose DSarkar SMukherjee MDas AChatterjee RVenkatesan RfalseGreen Chemistry-Assisted Synthesis of Metal Nanoparticles and Fabrication of Microstructurally Engineered Conductive and Endurable M&lt;sup&gt;0&lt;/sup&gt;@PEO Functional Films.The present research reports the synthesis of poly-[ethylene oxide]-based composite films (500 μm) containing metal nanoparticles (NPs) [Ag⁰ (<i>d</i> _p ∼ 6 nm), Cu⁰ (<i>d</i> _p ∼ 25 nm), and Fe⁰ (<i>d</i> _p ∼ 35 nm)] as the mobile phase. The novelty of the study is in the corroboration of a plausible mechanism for the generation of metal NPs through green synthesis using herbal extracts of <i>Camellia sinensis</i> (Tea) and <i>Azadirachta indica</i> (Neem). Density functional theory (DFT) is used to optimize the phytoreductants present in both biosources, wherein the reducing and/or stabilizing functional entities are primarily hydroxyl groups (-OH). The transition energy (band gap, Δ<i>E</i> _|LUMO-HOMO|) is foun2025-01-01T00:00:00Z2025 Sep2026-06-03T07:00:41.322Z2026-05-29T03:05:51.784ZS-EPMC124095294091832510.1021/acsomega.5c03323