PMID- 25361232 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20150511 LR - 20141114 IS - 1463-9084 (Electronic) IS - 1463-9076 (Linking) VI - 16 IP - 47 DP - 2014 Dec 21 TI - Effect of cationic head group on micellization behavior of new amide-functionalized surface active ionic liquids. PG - 26040-50 LID - 10.1039/c4cp04054f [doi] AB - Amide-functionalized surface active ionic liquids (SAILs), 1-methyl-1-dodecyl piperidinium chloride, [C12APip][Cl]; 1-methyl-1-dodecyl pyrrolidinium chloride, [C12APyrr][Cl]; 1-methyl-3-dodecyl imidazolium chloride, [C12Amim][Cl], and 1-methyl-1-dodecyl morpholinium chloride, [C12AMorph][Cl], have been synthesized, characterized and investigated for thermal stability, and micellization behavior in aqueous medium. The introduction of an amide moiety in the alkyl chain decreased the thermal stability of the functionalized SAILs compared to non-functionalized SAILs bearing a simple alkyl chain. A variety of state of the art techniques, viz. tensiometry, conductometry, steady-state fluorescence, isothermal titration calorimetry (ITC), dynamic light scattering (DLS) and atomic force microscopy (AFM), have been employed to investigate the micellization behavior. Amide-functionalized SAILs have shown much lower critical micelle concentration, cmc, and better surface active properties as compared to homologous non-functionalized SAILs. Steady-state fluorescence has provided information about cmc, aggregation number (Nagg) and polarity of the cybotactic region of the micelles, whereas ITC has provided insights into the thermodynamics of micellization. Furthermore, the size and shape of the micelles have been investigated using DLS and AFM techniques. FAU - Kamboj, Raman AU - Kamboj R AD - Department of Chemistry, UGC-Centre for Advanced Studies-I, Guru Nanak Dev University, Amritsar-143005, India. tejwantsinghkang@gmail.com sukhprit@gmail.com. FAU - Bharmoria, Pankaj AU - Bharmoria P FAU - Chauhan, Vinay AU - Chauhan V FAU - Singh, Gurbir AU - Singh G FAU - Kumar, Arvind AU - Kumar A FAU - Singh, Sukhprit AU - Singh S FAU - Kang, Tejwant Singh AU - Kang TS LA - eng PT - Journal Article DEP - 20141031 PL - England TA - Phys Chem Chem Phys JT - Physical chemistry chemical physics : PCCP JID - 100888160 EDAT- 2014/11/02 06:00 MHDA- 2014/11/02 06:01 CRDT- 2014/11/01 06:00 PHST- 2014/11/01 06:00 [entrez] PHST- 2014/11/02 06:00 [pubmed] PHST- 2014/11/02 06:01 [medline] AID - 10.1039/c4cp04054f [doi] PST - ppublish SO - Phys Chem Chem Phys. 2014 Dec 21;16(47):26040-50. doi: 10.1039/c4cp04054f. Epub 2014 Oct 31.