Effect of salts and temperature on the interaction of levofloxacin hemihydrate drug with cetyltrimethylammonium bromide: Conductometric and molecular dynamics investigations

Hoque, Md. Anamul; Alam, Md. Mahabub; Molla, Mohammad Robel; Rana, Shahed; Rub, Malik Abdul; Halim, Mohammad A.; Khan, Mohammed Abdullah; Ahmed, Anwar

doi:10.1016/j.molliq.2017.09.004

Cited by 56 publications

(22 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The observed cmc and ideal values of cmc , cmc id for pure surfactants (DTAC & CTAB) and their mixed systems are viewed in Tables . In aqueous solution, the value of cmc of individual CTAB was found to be 0.91 mmol·kg −1 at 298.15 K viewing a fine agreement with formerly accounted value, and the cmc of value of individual DTAC was achieved 3.54 mmol·kg −1 at 298.15 K is also found to be sound conformity with the earlier reported value …”

Section: Resultssupporting

confidence: 89%

“…The solutions of the surfactants utilized in this study were prepared either in H 2 O or in H 2 N‐CO‐NH 2 (300 mmol.kg −1 /700 mmol.kg −1 ). The conductivity measurement technique was resorted to evaluate the cmc of the amphiphiles studied herein following the process mentioned in the literature . To perform the experiments, Jenway 4510 conductivity meter (UK) with a deep cell having cell‐constant 0.97 cm −1 (the cell constant value was given by the manufacturer) has been utilized.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Mixed micellization study of dodecyltrimethylammonium chloride and cetyltrimethylammonium bromide mixture in aqueous/urea medium at different temperatures: Theoretical and experimental view

Mahbub

Rub

Hoque

et al. 2018

J of Physical Organic Chem

Self Cite

View full text Add to dashboard Cite

The behavior of mixed micelle formation between two cationic surfactants‐dodecyltrimethylammonium chloride (DTAC) and cetyltrimethylammonium bromide (CTAB) in absence/attendance of urea has been investigated by means of conductivity measurements over temperature range of 298.15 to 318.15 K. Lower magnitudes of the critical micelle concentration from their ideal values imply the strong interaction between the studied amphiphiles. The micellar mole fraction (X1) on the basis of the different proposed model (Rubingh, Motomura & Rodenas) and the ideal micellar mole fraction (Xid) were evaluated, and estimated results imply the high contribution of CTAB in the mixed micelle formation that enhances with the augment of the mole fraction of the CTAB. The values of activity coefficients (f1 and f2) (less than unity) and negative values of the interaction parameter (β) in all cases signify the attractive interaction between the amphiphiles studied. Spontaneous mixed micelle formation between the studied amphiphiles (dodecyltrimethylammonium chloride and CTAB) was indicated by the negative magnitudes of free energy of micellization (ΔGm0). The negative values of excess free energy of micellization (ΔGex) indicate the higher stability of the mixed micelle compared with the single micelle. The standard enthalpy change of micellization (ΔHm0) and standard entropy change of micellization (ΔSm0) were also calculated and discussed.

show abstract

Section: Resultssupporting

confidence: 89%

Section: Methodsmentioning

confidence: 99%

Mixed micellization study of dodecyltrimethylammonium chloride and cetyltrimethylammonium bromide mixture in aqueous/urea medium at different temperatures: Theoretical and experimental view

Mahbub

Rub

Hoque

et al. 2018

J of Physical Organic Chem

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, all of the solutions of SDS/CTAB were prepared in 0.17 M acetic acid solution as a solvent in case of presence of chitosan. In this study, conductivity measurement was employed to estimate the cmc following the procedure reported by different researchers (Attwood and Florence, ; Hoque et al, ; Khan et al, ; Kumar and Rub, ). A conductivity meter (model 4510, Jenway, UK), having a cell constant of 0.97 cm −1 (the value of the cell constant is presented by the supplier) was utilized for this purpose.…”

Section: Methodsmentioning

confidence: 99%

Aggregation Behavior of Sodium Dodecyl Sulfate and Cetyltrimethylammonium Bromide Mixtures in Aqueous/Chitosan Solution at Various Temperatures: An Experimental and Theoretical Approach

Mahbub

Rahman

Rana

et al. 2018

J Surfact & Detergents

Self Cite

View full text Add to dashboard Cite

A conductometric study of the mixed micellization behavior between cetyltrimethylammonium bromide (CTAB, a cationic surfactant) and sodium dodecyl sulfate (SDS, an anionic surfactant) was carried out in the absence/presence of various percentages of chitosan in the temperature range of 298.15–318.15 K. The deviations of critical micelle concentration (cmc) from the ideal values indicate the interaction between CTAB and SDS. The micellar mole fraction values according to different proposed models X1Rub (Rubingh), X1M (Motomura), X1Rod (Rodenas), and X1id (ideal mole fraction) were estimated and the results obtained reveal the high contribution of CTAB in the mixed micellization, which enhances with the increase of the mole fraction of CTAB. The negative magnitudes of normalΔGm0 indicate the spontaneous formation of mixed micelles between CTAB and SDS. The values of activity coefficients (f1 and f2) were less than unity and the values of the interaction parameter (β) are negative in all cases, which indicate the attractive interaction between CTAB and SDS. The negative values of excess free energy of micellization (ΔGex) signify the stability of the mixed micelles. The negative values of normalΔHm0 in the chitosan systems indicate that micellization is exothermic. The values of normalΔSm0 were found to be positive in all cases.

show abstract

“…Therefore this salt executes as a water-structure promoter, lessening the accessibility of H 2 O to the micelles. Analogous manner of these cations on the CMC values of ionic surfactant has also been narrated before [3,25].…”

Section: Critical Micelle Concentration (Cmc) and Counter Ion Bindingmentioning

confidence: 53%

“…For considering salt holding surfactantdrug system, 10 Na + and 10 Cl − ions were added. All molecular dynamics simulations were lead using NOVA force field in the suite of YASARA Dynamic program [24,25]. A cut-off radius of 8.0 Å was retained for short-range van der Waals as well as Coulomb interactions.…”

Section: Molecular Dynamics Simulationsmentioning

confidence: 99%

Investigation of the Interaction of Drug Tetradecyltrimethylammonium Bromide with Cetyltrimethylammonium Bromide at Different Temperature

Rahman

Nasiruddin

2020

AJOCS

View full text Add to dashboard Cite

Antibiotic interaction between tetradecyltrimethylammonium bromide (TTAB) with cetyltrimethylammonium bromide (CTAB) has been studied in solution and within the attendance of salts at several temperatures (298.15, 303.15, 308.15, 313.15 and 318.15 K). One critical micelle concentration (CMC) was noted for pure CTAB and their mixture with the drug tetradecyltrimethylammonium bromide (TTAB). The CMC values for mixed systems (TTAB + CTAB) within the presence of salt exhibited lower in magnitude as compared to their absence. This acknowledged the first micellization of the mixture of TTAB and CTAB. All the G0m values were found to be negative for all systems. The H0m and S0m values disclosed that hydrophobic and electrostatic interactions were increased within the presence of salts compared to their absence at lower and better temperatures respectively. The opposite thermodynamics parameters like transfer energy (G0m.tr.), transfer enthalpy (H0m.tr.) also as transfer entropy (S0m.tr.) were also determined and discussed intimately. The inherent enthalpy gain (H0m) and therefore the compensation temperature (Tc) were also estimated and deliberated. Molecular dynamics simulation exposes that aqueous also as salt environment have an impact on the hydrophobic interaction between tetradecyltrimethylammonium bromide (TTAB) with cetyltrimethylammonium bromide (CTAB).

show abstract

Effect of salts and temperature on the interaction of levofloxacin hemihydrate drug with cetyltrimethylammonium bromide: Conductometric and molecular dynamics investigations

Cited by 56 publications

References 41 publications

Mixed micellization study of dodecyltrimethylammonium chloride and cetyltrimethylammonium bromide mixture in aqueous/urea medium at different temperatures: Theoretical and experimental view

Mixed micellization study of dodecyltrimethylammonium chloride and cetyltrimethylammonium bromide mixture in aqueous/urea medium at different temperatures: Theoretical and experimental view

Aggregation Behavior of Sodium Dodecyl Sulfate and Cetyltrimethylammonium Bromide Mixtures in Aqueous/Chitosan Solution at Various Temperatures: An Experimental and Theoretical Approach

Investigation of the Interaction of Drug Tetradecyltrimethylammonium Bromide with Cetyltrimethylammonium Bromide at Different Temperature

Contact Info

Product

Resources

About