PMID- 31634657 OWN - NLM STAT- MEDLINE DCOM- 20200122 LR - 20200122 IS - 1090-2414 (Electronic) IS - 0147-6513 (Linking) VI - 186 DP - 2019 Dec 30 TI - Validating interfacial behaviour of surface-active ionic liquids (SAILs) with computational study integrated with biocidal and cytotoxic assessment. PG - 109784 LID - S0147-6513(19)31115-7 [pii] LID - 10.1016/j.ecoenv.2019.109784 [doi] AB - Surface-active ionic liquids (SAILs) belonging to the series of N-alkylmethylimidazolium halides [C(8)mimX] (X = Br, Cl, and BF(4)) and [C(n)mimBr] (n = 10, 12, 14, and 16) were employed to understand the influence of hydrophobicity of alkyl chain length and the chaotropicity of counter-ions of SAILs on the micellization, antimicrobial action and cytotoxicity properties. The micellization phenomenon of SAILs in an aqueous environment was examined employing tensiometry and steady-state fluorescence spectrophotometry. The corresponding interfacial parameters viz., critical micelle concentration (CMC), effectiveness (gamma(CMC)), surface pressure (capital PE, Cyrillic(CMC)), maximum surface excess concentration (capital GHE, Cyrillic(max)), and the minimum area engaged per molecule (A(min)) at the air-water interface were evaluated at 303.15 K. These experimental findings were monitored and geometrically optimized theoretically using Gaussian software to highlight the recent advances in this field of theoretical calculations for putative structure. The simulation descriptors correlated the micellization behavior as a function of hydrophobicity which may contribute to obtaining awareness on their ecological behavior and fate. In addition, the biological screening of all the examined SAILs was undertaken with a combined experimental and theoretical (optimized) method against bacteria and fungus. Results revealed that SAILs with the alkyl chain-length greater than C(8)- act as a fair antimicrobial agent against the selected microbial strain which is attributed to the enhanced degree of SAILs hydrophobicity. The cytotoxicity of these imidazolium-based SAILs was also assessed on the cervical human cell line (HeLa) using the MTT cell viability assay and the data thus obtained were subjected to statistical analysis. CI - Copyright (c) 2019 Elsevier Inc. All rights reserved. FAU - Dani, Unnati AU - Dani U AD - Department of Zoology, P. T. Sarvajanik College of Science (PTSCS), Surat, 395001, Gujarat, India. FAU - Bahadur, Anita AU - Bahadur A AD - Department of Zoology, P. T. Sarvajanik College of Science (PTSCS), Surat, 395001, Gujarat, India. FAU - Kuperkar, Ketan AU - Kuperkar K AD - Applied Chemistry Department, Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat, 395007, Gujarat, India. Electronic address: ketankuperkar@gmail.com. LA - eng PT - Journal Article DEP - 20191018 PL - Netherlands TA - Ecotoxicol Environ Saf JT - Ecotoxicology and environmental safety JID - 7805381 RN - 0 (Anti-Infective Agents) RN - 0 (Imidazoles) RN - 0 (Ionic Liquids) RN - 0 (Micelles) RN - 0 (Surface-Active Agents) RN - 059QF0KO0R (Water) SB - IM MH - Anti-Infective Agents/chemistry/pharmacology MH - Cell Survival/drug effects MH - HeLa Cells MH - Humans MH - Hydrophobic and Hydrophilic Interactions MH - Imidazoles/chemistry MH - Ionic Liquids/*chemistry/pharmacology MH - Micelles MH - Surface-Active Agents/*chemistry/pharmacology MH - Water/chemistry OTO - NOTNLM OT - Antimicrobial activity OT - Cytotoxicity OT - Micellization OT - Simulation OT - Surface-active ionic liquids (SAILs) EDAT- 2019/10/22 06:00 MHDA- 2020/01/23 06:00 CRDT- 2019/10/22 06:00 PHST- 2019/08/31 00:00 [received] PHST- 2019/10/07 00:00 [revised] PHST- 2019/10/08 00:00 [accepted] PHST- 2019/10/22 06:00 [pubmed] PHST- 2020/01/23 06:00 [medline] PHST- 2019/10/22 06:00 [entrez] AID - S0147-6513(19)31115-7 [pii] AID - 10.1016/j.ecoenv.2019.109784 [doi] PST - ppublish SO - Ecotoxicol Environ Saf. 2019 Dec 30;186:109784. doi: 10.1016/j.ecoenv.2019.109784. Epub 2019 Oct 18.