title: Self-assembly of anionic gemini surfactant: fluorescence resonance energy transfer and simulation study.
abstract: The interaction of dyes with a sulfonated Gemini surfactant was investigated in aqueous solution using Förster resonance energy transfer with acridine orange (AO) as a donor and rhodamine B (RhB) as an acceptor. Surface tension results showed that AO and RhB have different effects on the self-assembly of the Gemini surfactant, with AO giving a higher critical micelle concentration (cmc) and lower surface tension, while the opposite was observed for RhB. Energy transfer from AO to RhB was observed in the presence of the surfactant, and the energy transfer efficiency initially improved with increased surfactant concentration but then decreased significantly when the surfactant reached a higher concentration due to the formation of larger aggregates, which increased the average distance between AO and RhB. Dynamic light scattering demonstrated the existence of these large aggregates. Moreover, simulations using dissipative particle dynamics supported the experimental results.
authors.affiliation: School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China.
authors.forename: Lijuan
authors.initials: L
authors.lastname: Liu
authors.forename: Xuening
authors.initials: X
authors.lastname: Fei
authors.forename: Sen
authors.initials: S
authors.lastname: Zhu
authors.forename: Lu
authors.initials: L
authors.lastname: Yu
authors.forename: Baolian
authors.initials: B
authors.lastname: Zhang
mesh_terms: D000165:Acridine Orange / Q000737:chemistry; D000838:Anions / Q000138:chemical synthesis / Q000737:chemistry; D031541:Fluorescence Resonance Energy Transfer; D005456:Fluorescent Dyes / Q000737:chemistry*; D057446:Hydrodynamics; D008823:Micelles; D056004:Molecular Dynamics Simulation; D015394:Molecular Structure; D012235:Rhodamines / Q000737:chemistry; D013500:Surface Tension; D013501:Surface-Active Agents / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D000838:Anions; D005456:Fluorescent Dyes; D008823:Micelles; D012235:Rhodamines; D013501:Surface-Active Agents; D000165:Acridine Orange; C029773:rhodamine B