Aggregation of Non Ionic Surfactant Igepal in Aqueous Solution: Fluorescence and Light Scattering Studies

Ghosh, Sujit Kumar; Khatua, Pijus Kanti; Bhattacharya, Subhash C.

doi:10.3390/i4110562

Cited by 39 publications

(10 citation statements)

References 31 publications

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“…In our earlier work [24,28] on Brij (polyoxy ethylene glycol hexadecyl ether) and Igepal (polyoxy ethylene nonyl phenol) micelles, similar linear relationship was also obtained.…”

Section: Absorption and Emission Behavioursupporting

confidence: 80%

Modulated photophysics of 2-anthracene sulphonate in micellar assembly

Rana

Sarkar

Dhar

et al. 2010

Journal of Luminescence

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“…In our earlier work [24,28] on Brij (polyoxy ethylene glycol hexadecyl ether) and Igepal (polyoxy ethylene nonyl phenol) micelles, similar linear relationship was also obtained.…”

Section: Absorption and Emission Behavioursupporting

confidence: 80%

Modulated photophysics of 2-anthracene sulphonate in micellar assembly

Rana

Sarkar

Dhar

et al. 2010

Journal of Luminescence

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“…Nonionic surfactants excel other types due to their neutral behavior, compatibility with ionic surfactants and capability of forming complex mixtures as found in many commercial products. 3,4 Nonionic surfactants are used as excellent solubilizing agents due to their very low critical micelle concentration. 5,6 Such surfactants can work even in hard water as they do not yield ions in aqueous solution and hence, less or almost insensitive to electrolytes.…”

mentioning

confidence: 99%

Synthesis, Spectroscopic Characterization and pH Dependent Electrochemical Fate of Two Non-Ionic Surfactants

Munir

Ullah

Shah

et al. 2014

J. Electrochem. Soc.

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Two new nonionic surfactants; 1-sec-butyl-3-dodecanoylthiourea (DTU) and 1-dodecanoyl-3-phenylthiourea (DPTU) were synthesized and characterized by 1 H NMR, 13 C NMR and FTIR and UV-Vis spectroscopy. The detailed electrochemical fate of DTU and DPTU was investigated in a wide pH range of 2-12 by employing three electroanalytical techniques. The voltammetric signatures of the analytes showed a single irreversible anodic peak followed by two reversible peaks of the oxidation product. The irreversible behavior of the oxidation process was witnessed by the unequal components of total current in square wave voltammetry and scan rate based deviation of peak potential. The involvement of protons accompanying the electron transfer processes was ascertained from peak potential versus pH plots. Critical micelle concentration and hydrophilic-lipophilic balance of the synthesized surfactants were determined for the assessment of their cleaning, wetting and emulsifying properties. Some detergents and surfactants have been restricted and prohibited in the developed countries due to adverse environmental consequences. The manufacturers are now trying to synthesize environmentally friendly surfactants according to the environmental protection laws.1,2 With these facts in mind, we synthesized thiourea based surfactants which are expected to increase the fertility of the soil if their washed water is directed toward agricultural fields.Surfactants are classified as ionics, nonionics and zwitter-ionics. The demand and consumption of ionic surfactants were greater than nonionics in the mid of 19 century but now the market share of nonionic surfactants has reached to 40% of the total worldwide surfactants production. Nonionic surfactants excel other types due to their neutral behavior, compatibility with ionic surfactants and capability of forming complex mixtures as found in many commercial products. 3,4 Nonionic surfactants are used as excellent solubilizing agents due to their very low critical micelle concentration. 5,6 Such surfactants can work even in hard water as they do not yield ions in aqueous solution and hence, less or almost insensitive to electrolytes. Due to their neutral behavior, nonionic surfactants are none or less toxic than ionic surfactants and hence find use in cosmetics, pharmaceuticals and food products.7-9 They can also be used as wetting agents, emulsifiers and detergents.10,11 Nowadays nonionic surfactants are in constant use in different varieties of domestic and industrial products. 12,13 Prompted by the peculiar characteristics of non-ionic surfactants such as very low critical micelle concentration, insensitivity to hard water, no or low toxicity, low cost and compatibility with ionic surfactants, we synthesized and spectroscopically characterized more effective candidates of this class in high yield using the protocol reported in our recent article.14 Moreover, the oxygen, nitrogen and sulfur donor atoms of thiourea derivatives provide a multitude of bonding possibilities. 15 Hence, the excellent me...

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“…At volume that concentration is higher than the surfactant CMC (200 to 500 µL), superparamagnetic MNPs@SiO 2 were well obtained with diameters of 30.2 ± 1.7, 37.7 ± 1.4, 37.4 ± 1.5, and 32.1 ± 1.8 nm with 200, 300, 400, and 500 µL of surfactant, respectively (Figure 2b). However, Igepal ® CO-520 micelles could fuse at extremely high volumes (>2500 µL) [47], resulting in aggregated MNPs@SiO 2 and core-free silica nanoparticles (bare SiO 2 NPs). As a result, 300 µL of Igepal ® CO-520 was applied for further study.…”

Section: Effect Of Igepal ® Co-520 Volume On Silica-coated Magnetic Fmentioning

confidence: 99%

Silica-Coated Magnetic Iron Oxide Nanoparticles Grafted onto Graphene Oxide for Protein Isolation

et al. 2020

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In this study, silica-coated magnetic iron oxide nanoparticles (MNPs@SiO2) were covalently conjugated onto graphene oxide (GO/MNP@SiO2) for protein isolation. First, MNPs were precisely coated with a silica layer on the surface by using the reverse microemulsion method, followed by incubation with 3-glycidyloxypropyltrimethoxysilane (GPTS) to produce the GPTS-functionalized MNPs@SiO2 (GPTS-coated MNPs@SiO2) that display epoxy groups on the surface. The silica shell on the MNPs was optimized at 300 µL of Igepal®CO-520, 5 mg of MNP, 100 µL of TEOS, 100 µL of NH4OH and 3% of 3-glycidyloxypropyltrimethoxysilane (GPTS). Simultaneously, polyethyleneimine (PEI) was covalently conjugated to GO to enhance the stability of GO in aqueous solutions and create the reaction sites with epoxy groups on the surface of GPTS-coated MNP@SiO2. The ratio of PEI grafted GO and GPTS-coated MNP@SiO2 (GO/MNP ratio) was investigated to produce GO/MNPs@SiO2 with highly saturated magnetization without aggregation. As a result, the GO/MNP ratio of 5 was the best condition to produce the GO/MNP@SiO2 with 9.53 emu/g of saturation superparamagnetization at a magnetic field of 2.0 (T). Finally, the GO/MNPs@SiO2 were used to separate bovine serum albumin (BSA) to investigate its protein isolation ability. The quantity of BSA adsorbed onto 1 mg of GO/MNP@SiO2 increased sharply over time to reach 628 ± 9.3 µg/mg after 15 min, which was 3.5-fold-higher than that of GPTS-coated MNP@SiO2. This result suggests that the GO/MNP@SiO2 nanostructure can be used for protein isolation.

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Aggregation of Non Ionic Surfactant Igepal in Aqueous Solution: Fluorescence and Light Scattering Studies

Cited by 39 publications

References 31 publications

Modulated photophysics of 2-anthracene sulphonate in micellar assembly

Modulated photophysics of 2-anthracene sulphonate in micellar assembly

Synthesis, Spectroscopic Characterization and pH Dependent Electrochemical Fate of Two Non-Ionic Surfactants

Silica-Coated Magnetic Iron Oxide Nanoparticles Grafted onto Graphene Oxide for Protein Isolation

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