title: Interaction between water-soluble rhodium complex RhCl(CO)(TPPTS)₂ and surfactants probed by spectroscopic methods.
abstract: The interactions of rhodium complex RhCl(CO)(TPPTS)(2) [TPPTS=P(m-C(6)H(4)SO(3)Na)(3)] with cationic, nonionic, and anionic surfactants have been investigated by UV-vis, fluorescence and (1)H NMR measurements. The presence of four different species of RhCl(CO)(TPPTS)(2) in cationic cetyltrimethylammonium (CTAB) solution has been demonstrated: free rhodium complex, rhodium complex bound to CTAB monomer, rhodium complex bound to CTAB premicelles, rhodium complex bound to CTAB micelles. The spectroscopy data show that RhCl(CO)(TPPTS)(2) can adsorb on the interface of cationic CTAB micelles by strong electrostatic attraction, weakly bind to the nonionic polyoxyethylene (20) sorbitan monolaurate (Tween 20) micelles by hydrophobic interaction, and does not interact with anion sodium dodecyl sulfate (SDS) micelles due to the strong electrostatic repulsion.
authors.affiliation: Institute of Homogeneous Catalysis, College of Chemistry, Sichuan University, Key Laboratory of Green Chemistry and Technology of Ministry of Education, Chengdu 610064, Sichuan, China.
authors.forename: Li-Mei
authors.initials: LM
authors.lastname: Zhou
authors.forename: Cai-Hong
authors.initials: CH
authors.lastname: Guo
authors.forename: Hai-Yan
authors.initials: HY
authors.lastname: Fu
authors.forename: Xiao-Hui
authors.initials: XH
authors.lastname: Jiang
authors.forename: Hua
authors.initials: H
authors.lastname: Chen
authors.forename: Rui-Xiang
authors.initials: RX
authors.lastname: Li
authors.forename: Xian-Jun
authors.initials: XJ
authors.lastname: Li
mesh_terms: D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry; D056831:Coordination Complexes / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008823:Micelles; D011136:Polysorbates / Q000737:chemistry; D012238:Rhodium / Q000737:chemistry*; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry; D012995:Solubility; D013050:Spectrometry, Fluorescence; D013501:Surface-Active Agents / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D002593:Cetrimonium Compounds; D056831:Coordination Complexes; D008823:Micelles; D011136:Polysorbates; D013501:Surface-Active Agents; D014867:Water; D012967:Sodium Dodecyl Sulfate; D012238:Rhodium; D000077286:Cetrimonium