Colloid and Surface Chemistry, Materials Science, Chemistry
27
Scopus Publications
2458
Scholar Citations
22
Scholar h-index
24
Scholar i10-index
Scopus Publications
Role of surface-active materials (amphiphiles and surfactants) in the formation of nanocolloidal dispersions, and their applications Satya Priya Moulik, Indranil Chakraborty, Animesh Kumar Rakshit Journal of Surfactants and Detergents, 2022 Amphiphiles and surfactants are surface‐active molecules with special properties at interfaces, and they can undergo different modes of self‐association forming colloidal entities in solution. They can also stabilize other colloidal dispersions including nanoparticles, and help the formation and protection of nanodispersions resulting from chemical reactions. In this study, we have discussed the formation, properties, and applications of such nanocolloid‐like species formed in solution by different methods with special stress on various types of surfactants. Nanoparticles show the difference in melting point, electrochemical properties, conductance, etc., from their corresponding bulk material. Classical thermodynamics is used to explain this property. The basics of such processes, their types, morphology, stability, and usefulness have been presented and discussed. The types of assemblies that arise from the self‐associations of the amphiphiles, and surfactants under different conditions (i.e., micelles, reverse micelles, vesicles, liposomes, niosomes, etc.) have been also presented. Examples of their types, morphologies, transformations, and applications in relation to the stability, and functions of nanodispersions or nanocolloids are exemplified with multiple illustrations from earlier as well as recent research. The use of biosurfactants and block copolymers is also discussed. The stabilization of nanoparticles by “capping” has been discussed in some detail. A short account of the hydrothermal and solvothermal processes of synthesis of nanomaterials using amphiphiles as templates has been also presented. The multiple applications of amphiphile‐mediated nanoscience have been briefly presented and discussed.
The methods of determination of critical micellar concentrations of the amphiphilic systems in aqueous medium Tanushree Chakraborty, Indranil Chakraborty, Soumen Ghosh Arabian Journal of Chemistry, 2011 Science is the attempt to make the chaotic diversity of our sense-experience to a logically unified system of thought. A sound theoretical basis and a rational physicochemical understanding based on experimental findings lead to a proper understanding of a topic. Colloid chemistry strengthened its footing by the extensive studies on gold sols by Michael Faraday in 1850s, however, the term “colloid” was coined by Thomas Graham in 1861. Historically, the Stone Age paintings in the Lascaux cave in France and the written records of Egyptian pharaohs were produced with stabilized colloid pigments. The part of colloid science dealing with amphiphilic molecules is so diverse on its own that it is dealt in a separate branch called the “association colloid”. A key development in the study of association colloids was the observation by James McBain that the osmotic pressure of salts of alkali metal fatty acid displayed a pronounced break in the concentration beyond a specific characteristic concentration, after which the osmotic coefficient remained almost constant (Evans and Wennerstrom, 1994). McBain attributed this fact to the self-association of these molecules among themselves (McBain, 1913, McBain, 1944) in solution. Here, we are providing a molecular as well as thermodynamic approach toward the micellization process.
Physicochemical and conformational studies on BSA - Surfactant interaction in aqueous medium Tanushree Chakraborty, Indranil Chakraborty, Satya P. Moulik, Soumen Ghosh Langmuir, 2009 In this paper, results of physicochemical studies on the interaction of bovine serum albumin (BSA) with alkyltrimethylammonium bromide (ATAB), pentaethylene glycol mono-n-dodecyl ether (C12E5), and sodium dodecyl sulfate (SDS) under the experimental conditions of phosphate buffer at pH 7 in the presence of 10 mM sodium bromide (NaBr), maintaining the ionic strength of the overall solution at micro = 0.015 M, have been presented and discussed. Here, BSA-ATAB corresponds to a polyion-surfactant system bearing opposite charges. BSA precipitated out of the solution on addition of ATAB solution over a certain range of ATAB concentration, the concentration range being dependent on the particular member of the ATAB family. In our earlier reports on the precipitation of oppositely charged polymer-surfactant, the tensiometric profile for surfactant addition in polymer solution differed significantly from that expected from addition of surfactant in the dispersion medium. In the present study, the precipitation process could hardly affect the smoothness of the tensiometric profile. This indicates the interaction process is operative in bulk solution. Microcalorimetric profiles also evidenced an extra hump in the interaction profile at lower surfactant concentrations, without much affecting the dilution enthalpograms beyond micellization. This interaction appeared unimodal and the extent of interaction increased with increasing tail length of ATAB, evidencing the hydrophobic effect to be an important factor. Addition of salt (NaBr) also affected the nature of interaction: at lower concentration of NaBr, the interaction was mildly assisted, whereas 50 mM NaBr fairly assisted the interaction. The nonionic surfactant C12E5 modestly interacted with BSA. The anionic amphiphile SDS, on the other hand, interacted with BSA in two distinctly different stages, as evidenced from the tensiometric profile. The complexity of the BSA-SDS tensiometric isotherm compared to that of BSA-ATAB arose from the presence of cationic binding sites adjacent to hydrophobic patches of BSA in its native state, so that electrostatic and hydrophobic interactions can cooperatively operate side by side. The interfacial saturation occurred at a lower concentration in the presence of BSA compared to the normal cmc of SDS under identical solution conditions in the absence of BSA, which was slightly delayed for nonionic C12E5. The multitechnique approach evidenced that different experimental techniques probe different physicochemical phenomena and an attempt to show the concurrence of the break points in different techniques is only diluting the essence of this area.
Physicochemical studies of octadecyltrimethylammonium bromide: A critical assessment of its solution behavior with reference to formation of micelle, and microemulsion with n -butanol and n -heptane Kajari Maiti, Indranil Chakraborty, Subhash C. Bhattacharya, Amiya K. Panda, Satya P. Moulik Journal of Physical Chemistry B, 2007 Octadecyl-trimethyl-ammonium bromide (C18TAB) is a much less studied representative in the alkyltrimethylammonium halide surfactant series. A comprehensive study of its normal and reverse micelle (microemulsion) formation has been herein conducted by the methods of conductometry, tensiometry, fluorimetry, and microcalorimetry. The energetics of its air/liquid interfacial adsorption and self-association in aqueous solution have been examined. The phase behavior of its combinations with water, n-butanol, and n-heptane in the formation of microemulsions have been investigated with identification of a variety of phases. The energetics of formation of water dispersion in oil (w/o) has been evaluated from dilution experiments conducted at different temperatures. From the results, structural parameters of the droplets have been determined at different [water]/[surfactant] mole ratios (omega) and temperatures. The w/o dispersions have evidenced both volume- and temperature-induced conductance percolation. The results have been treated in light of the Scaling equations, and the associated parameters for the process have been determined. The activation energies for the temperature-induced percolation process of the w/o dispersion have been evaluated and assessed.
Interfacial and bulk behavior of sodium dodecyl sulfate in isopropanol-water and in isopropanol-poly (vinylpyrrolidone)-water media Abhijit Dan, Indranil Chakraborty, Soumen Ghosh, Satya P. Moulik Langmuir, 2007 The surface activity of isopropanol (IP) and poly(vinylpyrrolidone) (PVP) at the air/water interface has been studied. The self-aggregation of sodium dodecyl sulfate (SDS) in IP-water as well as in IP-PVP-water media has been investigated using physical methods, viz., tensiometry, conductometry, calorimetry, and viscometry. The interaction of SDS with PVP in IP-water medium as well as its self-aggregation (or micellization) in the presence of PVP has been assessed. The results reveal a fair degree of surface activity of IP in aqueous medium, which is only moderate for PVP. The critical micellar concentration (CMC) of SDS passes through a minimum at (v/v) % IP = 6.62. SDS interacts with PVP, yielding a critical aggregation concentration (CAC) at a low [SDS], independent of IP content in the medium. At a higher [SDS], free micelle formation takes place in solution, which is lower in mixed solvent than in water and is independent of solvent composition by tensiometry, but not by conductometry and calorimetry. The viscosity of micelle-interacted PVP in solution takes a long time to stabilize, whereas, for non-interacting additives, such as NaCl and cetyltrimethylammonium bromide (CTAB), it is time independent.
Self-aggregation of ionic C10 surfactants having different headgroups with special reference to the behavior of decyltrimethylammonium bromide in different salt environments: A calorimetric study with energetic analysis Indranil Chakraborty, Satya P. Moulik Journal of Physical Chemistry B, 2007 Self-aggregation of C10 ionic surfactants with different head groups, viz., decylpyridinium chloride, sodium decylsulfate, decylammonium bromide, decyldimethylammonium bromide, and decyltrimethylammonium bromide, was studied in the aqueous medium by microcalorimetric and conductometric methods. The effects of temperature and different salts (NaF, NaCl, NaBr, NaI, Na2SO4, Na2S2O7, Na-benzoate, and Na-salicylate) were also studied on decyltrimethylammonium bromide representatives. The cmc, counterion binding, and energetics of micellization were evaluated and discussed. The energetic parameters, enthalpy, entropy, and specific heat of micellization obtained from direct calorimetry and the indirect van't Hoff method were compared and discussed.
Role of surface‐active materials (amphiphiles and surfactants) in the formation of nanocolloidal dispersions, and their applications SP Moulik, I Chakraborty, AK Rakshit Journal of Surfactants and Detergents 25 (6), 703-727 , 2022 2022 Citations: 17
D-Glucose Derived Novel Gemini Surfactants: Synthesis and Study of Their Surface Properties, Interaction with DNA, and Cytotoxicity MB Vikash Kumar, Amrita Chatterjee,Nupur Kumar,Anasuya Ganguly, Anasuya ... Carbohydrate Research 397, 37-45 , 2014 2014 Citations: 32
JR 400–NaAOT interaction: a detailed thermodynamic study of polymer–surfactant interaction bearing opposite charges I Chakraborty, T Chakraborty, SP Moulik Colloid and polymer science 291 (8), 1939-1948 , 2013 2013 Citations: 6
The methods of determination of critical micellar concentrations of the amphiphilic systems in aqueous medium T Chakraborty, I Chakraborty, S Ghosh Arabian Journal of Chemistry 4 (3), 265-270 , 2011 2011 Citations: 193
Physicochemical and conformational studies on BSA− surfactant interaction in aqueous medium T Chakraborty, I Chakraborty, SP Moulik, S Ghosh Langmuir 25 (5), 3062-3074 , 2009 2009 Citations: 248
Physicochemical studies of octadecyltrimethylammonium bromide: a critical assessment of its solution behavior with reference to formation of micelle, and microemulsion with n … K Maiti, I Chakraborty, SC Bhattacharya, AK Panda, SP Moulik The Journal of Physical Chemistry B 111 (51), 14175-14185 , 2007 2007 Citations: 58
Studies on binary and ternary amphiphile combinations of tetradecyltrimethylammonium bromide (C14TAB), tetradecyltriphenylphosphonium bromide (C14TPB), and tetradecylpyridinium … G Basu Ray, I Chakraborty, S Ghosh, SP Moulik, C Holgate, K Glenn, ... The Journal of Physical Chemistry B 111 (33), 9828-9837 , 2007 2007 Citations: 61
Interfacial and bulk behavior of sodium dodecyl sulfate in isopropanol− water and in isopropanol− poly (vinylpyrrolidone)− water media A Dan, I Chakraborty, S Ghosh, SP Moulik Langmuir 23 (14), 7531-7538 , 2007 2007 Citations: 54
Self-Aggregation of Ionic C 10 Surfactants Having Different Headgroups with Special Reference to the Behavior of Decyltrimethylammonium Bromide in Different … I Chakraborty, SP Moulik The Journal of Physical Chemistry B 111 (14), 3658-3664 , 2007 2007 Citations: 66
Nanomaterials: A new dimension in material science SP Moulik, I Chakraborty ChemInform 38 (12), no-no , 2007 2007 Citations: 2
Physicochemical studies on pepsin− CTAB interaction: energetics and structural changes T Chakraborty, I Chakraborty, SP Moulik, S Ghosh the Journal of Physical Chemistry B 111 (10), 2736-2746 , 2007 2007 Citations: 75
On mixed binary surfactant systems comprising MEGA 10 and alkyltrimethylammonium bromides: a detailed physicochemical study with a critical analysis GB Ray, I Chakraborty, S Ghosh, SP Moulik Journal of colloid and interface science 307 (2), 543-553 , 2007 2007 Citations: 104
Interfacial and solution properties of tetraalkylammonium bromides and their sodium dodecyl sulfate interacted products: a detailed physicochemical study D Mitra, I Chakraborty, SC Bhattacharya, SP Moulik Langmuir 23 (6), 3049-3061 , 2007 2007 Citations: 64
A critical and comprehensive assessment of interfacial and bulk properties of aqueous binary mixtures of anionic surfactants, sodium dodecylsulfate, and sodium … G Basu Ray, I Chakraborty, S Ghosh, SP Moulik Colloid and polymer science 285 (4), 457-469 , 2007 2007 Citations: 76
Preparation and characterisation of CoS 2 nanomaterial in aqueous cationic surfactant medium of cetyltrimethylammonium bromide (CTAB) I Chakraborty, PK Malik, SP Moulik Journal of Nanoparticle Research 8 (6), 889-897 , 2006 2006 Citations: 54
Sodium carboxymethylcellulose− CTAB interaction: a detailed thermodynamic study of polymer− surfactant interaction with opposite charges T Chakraborty, I Chakraborty, S Ghosh Langmuir 22 (24), 9905-9913 , 2006 2006 Citations: 274
Physicochemical studies on cetylammonium bromide and its modified (mono-, di-, and trihydroxyethylated) head group analogues. Their micellization characteristics in water and … D Mitra, I Chakraborty, SC Bhattacharya, SP Moulik, S Roy, D Das, ... The Journal of Physical Chemistry B 110 (23), 11314-11326 , 2006 2006 Citations: 48
Critical evaluation of micellization behavior of nonionic surfactant MEGA 10 in comparison with ionic surfactant tetradecyltriphenylphosphonium bromide studied by … M Prasad, I Chakraborty, AK Rakshit, SP Moulik The Journal of Physical Chemistry B 110 (20), 9815-9821 , 2006 2006 Citations: 60
Pyrene absorption can be a convenient method for probing critical micellar concentration (cmc) and indexing micellar polarity GB Ray, I Chakraborty, SP Moulik Journal of colloid and interface science 294 (1), 248-254 , 2006 2006 Citations: 516
Self-aggregation of alkyltrimethylammonium bromides (C10-, C12-, C14-, and C16TAB) and their binary mixtures in aqueous medium: a critical and comprehensive assessment of … GB Ray, I Chakraborty, S Ghosh, SP Moulik, R Palepu Langmuir 21 (24), 10958-10967 , 2005 2005 Citations: 246
MOST CITED SCHOLAR PUBLICATIONS
Pyrene absorption can be a convenient method for probing critical micellar concentration (cmc) and indexing micellar polarity GB Ray, I Chakraborty, SP Moulik Journal of colloid and interface science 294 (1), 248-254 , 2006 2006 Citations: 516
Sodium carboxymethylcellulose− CTAB interaction: a detailed thermodynamic study of polymer− surfactant interaction with opposite charges T Chakraborty, I Chakraborty, S Ghosh Langmuir 22 (24), 9905-9913 , 2006 2006 Citations: 274
Physicochemical and conformational studies on BSA− surfactant interaction in aqueous medium T Chakraborty, I Chakraborty, SP Moulik, S Ghosh Langmuir 25 (5), 3062-3074 , 2009 2009 Citations: 248
Self-aggregation of alkyltrimethylammonium bromides (C10-, C12-, C14-, and C16TAB) and their binary mixtures in aqueous medium: a critical and comprehensive assessment of … GB Ray, I Chakraborty, S Ghosh, SP Moulik, R Palepu Langmuir 21 (24), 10958-10967 , 2005 2005 Citations: 246
The methods of determination of critical micellar concentrations of the amphiphilic systems in aqueous medium T Chakraborty, I Chakraborty, S Ghosh Arabian Journal of Chemistry 4 (3), 265-270 , 2011 2011 Citations: 193
On mixed binary surfactant systems comprising MEGA 10 and alkyltrimethylammonium bromides: a detailed physicochemical study with a critical analysis GB Ray, I Chakraborty, S Ghosh, SP Moulik Journal of colloid and interface science 307 (2), 543-553 , 2007 2007 Citations: 104
A critical and comprehensive assessment of interfacial and bulk properties of aqueous binary mixtures of anionic surfactants, sodium dodecylsulfate, and sodium … G Basu Ray, I Chakraborty, S Ghosh, SP Moulik Colloid and polymer science 285 (4), 457-469 , 2007 2007 Citations: 76
Physicochemical studies on pepsin− CTAB interaction: energetics and structural changes T Chakraborty, I Chakraborty, SP Moulik, S Ghosh the Journal of Physical Chemistry B 111 (10), 2736-2746 , 2007 2007 Citations: 75
Self-Aggregation of Ionic C 10 Surfactants Having Different Headgroups with Special Reference to the Behavior of Decyltrimethylammonium Bromide in Different … I Chakraborty, SP Moulik The Journal of Physical Chemistry B 111 (14), 3658-3664 , 2007 2007 Citations: 66
Interfacial and solution properties of tetraalkylammonium bromides and their sodium dodecyl sulfate interacted products: a detailed physicochemical study D Mitra, I Chakraborty, SC Bhattacharya, SP Moulik Langmuir 23 (6), 3049-3061 , 2007 2007 Citations: 64
Studies on binary and ternary amphiphile combinations of tetradecyltrimethylammonium bromide (C14TAB), tetradecyltriphenylphosphonium bromide (C14TPB), and tetradecylpyridinium … G Basu Ray, I Chakraborty, S Ghosh, SP Moulik, C Holgate, K Glenn, ... The Journal of Physical Chemistry B 111 (33), 9828-9837 , 2007 2007 Citations: 61
Critical evaluation of micellization behavior of nonionic surfactant MEGA 10 in comparison with ionic surfactant tetradecyltriphenylphosphonium bromide studied by … M Prasad, I Chakraborty, AK Rakshit, SP Moulik The Journal of Physical Chemistry B 110 (20), 9815-9821 , 2006 2006 Citations: 60
Physicochemical studies of octadecyltrimethylammonium bromide: a critical assessment of its solution behavior with reference to formation of micelle, and microemulsion with n … K Maiti, I Chakraborty, SC Bhattacharya, AK Panda, SP Moulik The Journal of Physical Chemistry B 111 (51), 14175-14185 , 2007 2007 Citations: 58
Interfacial and bulk behavior of sodium dodecyl sulfate in isopropanol− water and in isopropanol− poly (vinylpyrrolidone)− water media A Dan, I Chakraborty, S Ghosh, SP Moulik Langmuir 23 (14), 7531-7538 , 2007 2007 Citations: 54
Preparation and characterisation of CoS 2 nanomaterial in aqueous cationic surfactant medium of cetyltrimethylammonium bromide (CTAB) I Chakraborty, PK Malik, SP Moulik Journal of Nanoparticle Research 8 (6), 889-897 , 2006 2006 Citations: 54
Spectroscopic studies on nanodispersions of CdS, HgS, their core-shells and composites prepared in micellar medium I Chakraborty, D Mitra, SP Moulik Journal of Nanoparticle Research 7 (2), 227-236 , 2005 2005 Citations: 54
Physicochemical studies on cetylammonium bromide and its modified (mono-, di-, and trihydroxyethylated) head group analogues. Their micellization characteristics in water and … D Mitra, I Chakraborty, SC Bhattacharya, SP Moulik, S Roy, D Das, ... The Journal of Physical Chemistry B 110 (23), 11314-11326 , 2006 2006 Citations: 48
On PbS nanoparticles formed in the compartments of water/AOT/n-heptane microemulsion I Chakraborty, SP Moulik Journal of Nanoparticle Research 7 (2), 237-247 , 2005 2005 Citations: 41
Physicochemical studies on microemulsions: 9. Conductance percolation of AOT-derived W/O microemulsion with aliphatic and aromatic hydrocarbon oils I Chakraborty, SP Moulik Journal of colloid and interface science 289 (2), 530-541 , 2005 2005 Citations: 37
D-Glucose Derived Novel Gemini Surfactants: Synthesis and Study of Their Surface Properties, Interaction with DNA, and Cytotoxicity MB Vikash Kumar, Amrita Chatterjee,Nupur Kumar,Anasuya Ganguly, Anasuya ... Carbohydrate Research 397, 37-45 , 2014 2014 Citations: 32
