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صفحه اصلی
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بیست و نهمین کنفرانس شیمی آلی ایران
Synthesis and Characterization of MPy@GQD as Hybrid of Porous Organic Polymers with Graphen Quantum Dots
نویسندگان :
هانیه فرخی ( دانشگاه شهید مدنی آذربایجان ) , معصومه باقری ( دانشگاه شهید مدنی آذربایجان )
کلید واژه ها :
Porous organic polymers،Melamine،Graphene Quantum Dots،6-pyridine dicarboxylic acid
چکیده مقاله :
Porous organic frameworks/polymers (POFs/POPs) are an intriguing class of porous materials distinguished by their distinctive characteristics, including a straightforward synthesis process, enduring and adjustable porosity, a high specific surface area, robust thermal stability, and low density [1]. On the other hand, Graphene Quantum Dots (GQDs) have garnered significant attention due to their exceptional optical properties and their potential applications in sensing, diagnostics, imaging, and optoelectronic devices. Recently, a novel type of polyamine-functionalized CQD, achieved through capping with branched poly-(ethylenimine) (BPEI), has emerged as fluorescent probes for the selective and sensitive detection of copper ions [2]. In this study, we developed a hybrid material called MPy@GQD, which combines the features of Porous Organic Polymers (POPs) and Graphene Quantum Dots (GQDs). This was achieved through a one-pot polyamidation reaction involving melamine (M), 2,6-pyridine dicarboxylic acid (Py), and GQD. Different molar ratios of Py/M and of GQD in a solvent were used, and the reaction was carried out in solvothermal conditions (as shown in the scheme). The successful synthesis of MPy@GQD was confirmed through various analyses, including XRD, FTIR, SEM, BET, and TGA. As a result, MPy@GQD was obtained as a mesoporous adsorbent, boasting an impressive surface area of 474 m²/g , also systematically investigated how the molar ratio of GQDs in the synthesis of MPy@GQD affected its thermal stability, crystallinity, porosity, and morphology. Notably, all the synthesized MPy@GQDs exhibited an amorphous structure. Therefore, this material shows significant potential for use in applications related to the adsorption of metal ions.
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