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RISS 인기검색어
- 검색키워드
- 저자 : Jaison Jeevanandam (검색결과 4 건)
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Aqueous Eucalyptus globulus leaf extract-mediated biosynthesis of MgO nanorods
Jaison Jeevanandam,Yen San Chan,Yee Hung Ku 한국응용생명화학회 2018 Applied Biological Chemistry (Appl Biol Chem) Vol.61 No.2
Plant-based biosynthesis is gaining attention in nanoparticle synthesis as an alternate to chemical and physical synthesis routes due to their non-toxic and environment friendly nature. Leaf extract-based biosynthesis further facilitates rapid synthesis of non-toxic biocompatible nanoparticle that possesses various applications in biomedical and pharmaceutical industry. Metal oxides, especially MgO nanoparticles, show tremendous applications in medical industry. Moreover, plant-based biosynthesized MgO nanoparticles showed improved biophysical and biochemical properties. In the current study, MgO nanorods (MgONRs) are synthesized using Eucalyptus globulus aqueous leaf extract. The results are highly significant as rod-shaped nanoparticles possess superior cellular penetration ability than other morphologies and can be valuable in medical applications. A preliminary experiment was performed to identify the required reaction time for nanorod formation using dynamic light scattering technique. Later, one-factor-at-a-time approach was followed to identify the effect of each process parameters on average particle size of MgONRs. The optimized parameters were used for the synthesis of smaller-sized MgONRs. Fourier Transform infrared spectroscopy analysis was conducted to identify and analyze the functional groups in the leaf extract and MgONRs. The functional groups from phytochemicals and their transformation from enol to keto-form were found to be responsible for nanoparticle formation. The transmission electron microscope analysis showed that the optimized parameters yield 6–8 nm width of stacked MgONRs. Thus, the present work demonstrated a simple and rapid biosynthesis route for MgO nanorod synthesis which can be beneficial in biosensing and therapeutic application.
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Aqueous Eucalyptus globulus leaf extract-mediated biosynthesis of MgO nanorods
Jeevanandam, Jaison,Chan, Yen San,Ku, Yee Hung The Korean Society for Applied Biological Chemistr 2018 Applied Biological Chemistry (Appl Biol Chem) Vol.61 No.2
Plant-based biosynthesis is gaining attention in nanoparticle synthesis as an alternate to chemical and physical synthesis routes due to their non-toxic and environment friendly nature. Leaf extract-based biosynthesis further facilitates rapid synthesis of non-toxic biocompatible nanoparticle that possesses various applications in biomedical and pharmaceutical industry. Metal oxides, especially MgO nanoparticles, show tremendous applications in medical industry. Moreover, plant-based biosynthesized MgO nanoparticles showed improved biophysical and biochemical properties. In the current study, MgO nanorods (MgONRs) are synthesized using Eucalyptus globulus aqueous leaf extract. The results are highly significant as rod-shaped nanoparticles possess superior cellular penetration ability than other morphologies and can be valuable in medical applications. A preliminary experiment was performed to identify the required reaction time for nanorod formation using dynamic light scattering technique. Later, one-factor-at-a-time approach was followed to identify the effect of each process parameters on average particle size of MgONRs. The optimized parameters were used for the synthesis of smaller-sized MgONRs. Fourier Transform infrared spectroscopy analysis was conducted to identify and analyze the functional groups in the leaf extract and MgONRs. The functional groups from phytochemicals and their transformation from enol to keto-form were found to be responsible for nanoparticle formation. The transmission electron microscope analysis showed that the optimized parameters yield 6-8 nm width of stacked MgONRs. Thus, the present work demonstrated a simple and rapid biosynthesis route for MgO nanorod synthesis which can be beneficial in biosensing and therapeutic application.
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Soft, self-assembled liquid-crystalline nanocomposite for superior switching
Kaushik Pal,Sami Sajjadifar,Mohamed Abd Elkodous,Yakubu Adekunle Alli,Fernando Gomes,Jaison Jeevanandam,Sabu Thomas,Alexander Sigov 대한금속·재료학회 2019 ELECTRONIC MATERIALS LETTERS Vol.15 No.1
Liquid crystal (LC) has long been a feature in Materials Science and Nanotechnology, have recently been extended into theappealing domain of complex hybrid materials. The crystalline structural eff ects of alkoxy chain lengths and the mesogenproperties of hydrogen-bonded (n-OBASA) complexes (n = 5,6,7) have been investigated in recent studies. The LC-basedhybrid nanocomposite materials–obtained by the homogeneous dispersion of zinc oxide nanowires (ZnO NWs) as a dopantinto hydrogen-bonded liquid-crystalline compounds—seem to be particularly promising in this article. Optimizing thegeometry of surface stabilizing electro-optic, LC cell reveals the typical intermolecular hydrogen bond (H-bond) formation. Here, we explore molecular-colloidal hybrid composite matrix formed from LCs and dilute dispersions of orientation-orderedZnO NWs, for eventual potential application in smart switchable display devices. In addition, we investigated the structural,dielectric and optical properties of the nanocomposite, and electro-optical studies which were performed by exploiting thepotential during the conditions before the opening of spectrum acquisition. Our novel fi ndings confi rm that the electric fi eldinduces a charge transfer of the LC molecules to the nanomaterial, which acts as a trap for ionic charges. This eff ect maybe utilized to achieve superior switching operation that is electro-optically tunable. Such dynamic novel switching could beharnessed in smart LCD technology and pave the way towards innovative display modulation techniques.
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Tianqi Liu,Chukwunonso O. Aniagor,Marcel I. Ejimofor,Matthew C. Menkiti,Yakubu M. Wakawa,Jie Li,Rachid Ait Akbour,Pow-Seng Yap,Sie Yon Lau,Jaison Jeevanandam 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.117 No.-
Recently, there is an increasing concern on dye contamination in the aquatic environment. Elimination ofdye contaminants has gained significant attention among researchers due to their potential deleteriousrisk to human health and the ecosystem. Among the treatment technologies for dye removal from thewater system, the utilization of modified graphene oxide as an adsorbent has garnered increasingresearch interest due to its superior dye adsorption capacity. Hence, this review aims to comprehensivelypresent the classifications and hazards of dyes, types of preparation methods for modified graphene oxideand recent developments in the employment of modified graphene oxide to adsorb dyes from water. Additionally, the primary objective of this review is to emphasize on adsorption performances of modifiedgraphene oxide for dye removal in an aqueous medium, specifically focusing on the adsorption kinetics,adsorption isotherms and the effect of experimental parameters. Furthermore, the pertinentchallenges, tremendous opportunities and the future outlook of modified graphene oxide to be employedas a potential aqueous dye adsorbent were also discussed.
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