Facile synthesis of gold nanoparticles capped with an ammonium-based chiral ionic liquid crystal

Mangaiyarkarasi, R; Sivaranjini, B.; Umadevi, S.

doi:10.1080/02678292.2018.1513170

Cited by 14 publications

(2 citation statements)

References 40 publications

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“…In TLCs, mesophase is obtained by the action of heat whereas in LLCs, concentration of the components plays an important role and the mesophase can be observed in a speci c concentration range of the components. Apart from their signi cant applications in the display technology, optoelectronic, sensing, drug delivery etc., both TLCs and LLCs have been exploited for the synthesis and self-assembly of nanomaterials [2][3][4][5][6][7][8][9][10]. Compared to thermotropic, lyotropic phases have gained much attention as versatile platform for the synthesis of mesoporous materials and different nanostructures [10].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Co3O4 nanoparticles in a lyotropic liquid crystal medium and their application in anti-bacterial, anti-cancer and catalytic activities

Santhiya,

Meyyathal,

Umadevi

2023

Preprint

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Preparation of Co3O4 nanoparticles (NPs) via a chemical reduction method at room temperature in a lyotropic liquid crystal (LLC) medium is described. A mixture of triton X-100 and water in the ratio 2.1:2.9 (wt%) exhibited LLC having a hexagonal structure in the temperature range 25-29°C. The NPs were prepared in this medium by reducing cobalt(II) chloride hexahydrate (CoCl2.6H2O) using sodium borohydride (NaBH4) resulting in nearly spherical particles having a size of ∼100nm. The LLC medium facilitated a controlled growth of the NPs and also provided stabilization for the NPs by preventing their aggregation. The anti-bacterial activity of the particles indicated a significant activity towards gram-negative bacteria. Anticancer activity against breast cancer cell line MCF-7 showed an impressive IC50 value of 30.8 µg/mL. Additionally, the efficiency of the Co3O4 NPs as catalyst for the reduction of 4-nitrophenol and degradation of a dye named methylene blue was evaluated; the apparent rate constant values calculated for these reactions were 1.8´10-2 min-1 and 3.1´10-2 min-1 respectively. Besides, particles displayed efficient activity till 5th cycle.

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Section: Introductionmentioning

confidence: 99%

Preparation of Co3O4 nanoparticles in a lyotropic liquid crystal medium and their application in anti-bacterial, anti-cancer and catalytic activities

Santhiya,

Meyyathal,

Umadevi

2023

Preprint

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“…The inclusion of nanoparticles (NPs) within self-organized assemblies such as liquid crystals (LCs) provides unique characteristics with advanced functional properties. In spite of the promising relevance for hybrid systems, fundamental knowledge of the NPs affecting LC properties is still limited, and therefore its development has received increasing attention in recent years [1][2][3][4][5][6][7][8][9][10]. Combining the properties of LCs and metallic NPs is applicable to the field of materials science on account of the potential benefits to be derived from exploiting their fused functions.…”

Section: Introductionmentioning

confidence: 99%

Electrorheological Effect of Gold Nanoparticles Coated with Fluorescent Mesogenic Groups Dispersed in Nematic Liquid Crystal

et al. 2021

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The electrorheological (ER) properties of composite materials consisting of a nematic liquid crystal (LC) and gold nanoparticles (GNPs) coated with bistolane-based mesogenic groups were studied. The GNPs were coated by normal alkyl chains and the fluorescent LC compounds, of which the molecular structure was similar to that of the LC matrix. The dispersity of the GNPs in the nematic LC was investigated by polarizing optical microscopy (POM). In order to improve the ER effect of the composite, a simple strategy was investigated from the viewpoint of a material design in surface-modified GNPs by lateral substitution of the mesogenic groups. The presence of the GNPs in the nematic LC led to a slightly enhanced ER effect compared to that observed for only the nematic LC. This study demonstrates the potential of a hybrid system consisting of LCs and GNPs to yield a larger ER effect.

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An Understanding for the Synthesis of Metal NPs to Photocatalysis to Toxicity

Aslam,

Goswami,

Bhawna

et al. 2023

Plasmonics

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Facile synthesis of gold nanoparticles capped with an ammonium-based chiral ionic liquid crystal

Cited by 14 publications

References 40 publications

Preparation of Co3O4 nanoparticles in a lyotropic liquid crystal medium and their application in anti-bacterial, anti-cancer and catalytic activities

Preparation of Co3O4 nanoparticles in a lyotropic liquid crystal medium and their application in anti-bacterial, anti-cancer and catalytic activities

Electrorheological Effect of Gold Nanoparticles Coated with Fluorescent Mesogenic Groups Dispersed in Nematic Liquid Crystal

An Understanding for the Synthesis of Metal NPs to Photocatalysis to Toxicity

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