In Situ Synthesis of Gold Nanoparticles Using Molecular Gels and Liquid Crystals from Vitamin-C Amphiphiles

Vemula, Praveen Kumar; Aslam, Unaiza; Mallia, V. Ajay; John, George

doi:10.1021/cm062464n

Cited by 153 publications

(33 citation statements)

References 30 publications

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“…35 Noncoordinated metal ions or metallic nanoparticles may also be incorporated into the gel matrix. [36][37][38][39] The inclusion of metal ions in LMWGs lead to multifunctional metallogels which offer potential applications 20 in catalysis, sensing, optics and magnetic materials. The understanding of the structure of LMWGs and metallogels in the gel state is still in its infancy because of the low ordering of the gel as a whole and the wide range of length scales of the gel structure, ranging from the nano-to microscale.…”

Section: Introductionmentioning

confidence: 99%

Selective gelation of N-(4-pyridyl)nicotinamide by copper(ii) salts

et al. 2015

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ARTICLE This journal isWe report the selective gelation properties of copper(II) complexes of N-(4pyridyl)nicotinamide (4PNA). The morphology of the xerogels was examined by scanning electron microscopy (SEM). Correlation of X-ray powder diffraction (XRPD) pattern of the xerogels and single crystal structure of copper(II) acetate complex suggests that the single crystal X-ray data represents a good structural model for the gel fibers themselves and that gelation arises from the presence of a 1D hydrogen bonded chain between gelator amide groups and coordinated anions, while the presence of strongly bound water in non-gelator systems results in the formation of more extensively hydrogen bonded crystalline networks. The selective gelation of all the copper(II) salts compared to the other metal salts may be attributed to Jahn-Teller distorted nature of copper(II), which weakens water binding in all copper(II) salts.

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Section: Introductionmentioning

confidence: 99%

Selective gelation of N-(4-pyridyl)nicotinamide by copper(ii) salts

et al. 2015

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“…Thus topics such as micellar [36] or lyotropic NPs [37–38], polymer coated/embedded NP mesogens [39–41] and the expansive field of NP-doped LC systems (including labile hybrid/ligand mixtures [42] and direct synthesis of NPs in LC matrices [43–46]) of interest for various high-technology applications [47], will not be discussed here, but the interested reader is directed to other publications in the field [48–49]. …”

Section: Introductionmentioning

confidence: 99%

Liquid-crystalline nanoparticles: Hybrid design and mesophase structures

Nealon¹,

Gréget²,

Domínguez³

et al. 2012

Beilstein J. Org. Chem.

124

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SummaryLiquid-crystalline nanoparticles represent an exciting class of new materials for a variety of potential applications. By combining supramolecular ordering with the fluid properties of the liquid-crystalline state, these materials offer the possibility to organise nanoparticles into addressable 2-D and 3-D arrangements exhibiting high processability and self-healing properties. Herein, we review the developments in the field of discrete thermotropic liquid-crystalline nanoparticle hybrids, with special emphasis on the relationship between the nanoparticle morphology and the nature of the organic ligand coating and their resulting phase behaviour. Mechanisms proposed to explain the supramolecular organisation of the mesogens within the liquid-crystalline phases are discussed.

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“…Research on supramolecular gels has gained much impetus in the quest for developing new functional materials. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Various materials applications such as light harvesting, [17] catalysis , [18][19][20] structure-directinga gents, [21,22] synthesis of nanoparticles, [23][24][25][26] dye adsorption, [27][28][29] containing oil spill, [30,31] art conservation, [32,33] sensing, [34][35][36] drug delivery, [37][38][39][40] tissue engineering [41,42] etc. are now feasible with supramolecular gels.Ametallogeli sas pecial type of supramolecular gel wherein metalligand coordination takes an important part in gelation.…”

Section: Introductionmentioning

confidence: 99%

Stimuli‐Responsive Metallogels for Synthesizing Ag Nanoparticles and Sensing Hazardous Gases

Biswas

Ganguly

Dastidar

2018

Chemistry An Asian Journal

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A newly synthesized bis-pyridyl ligand having a diphenyl ether backbone (LP6) displayed the ability to form crystalline coordination polymers (CP1-CP6) which were fully characterized by single crystal X-ray diffraction. Most of the resulting polymers were lattice-occluded crystalline solids-a structural characteristic reminiscent to gels. The reactants of the coordination polymers produced metallogels in DMSO/water confirming the validity of the design principles with which the coordination polymers were synthesized. Some of the metallogels displayed material properties like in situ synthesis of Ag nanoparticles and stimuli-responsive gel-sol transition including sensing hazardous gases like ammonia and hydrogen sulfide.

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In Situ Synthesis of Gold Nanoparticles Using Molecular Gels and Liquid Crystals from Vitamin-C Amphiphiles

Abstract: Various organic self-assembled systems such as low-molecular-weight gels and liquid crystals have been utilized as efficient hosts for in situ synthesis and stabilization of gold nanoparticles using vitamin-C-based amphiphiles.

Cited by 153 publications

References 30 publications

Selective gelation of N-(4-pyridyl)nicotinamide by copper(ii) salts

Selective gelation of N-(4-pyridyl)nicotinamide by copper(ii) salts

Liquid-crystalline nanoparticles: Hybrid design and mesophase structures

Stimuli‐Responsive Metallogels for Synthesizing Ag Nanoparticles and Sensing Hazardous Gases

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