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| Home > Publications database > Using Inclusion Complexes with Cyclodextrins To Explore the Aggregation Behavior of a Ruthenium Metallosurfactant > print |
| 001 | 189819 | ||
| 005 | 20240619091134.0 | ||
| 024 | 7 | _ | |a 10.1021/la504929x |2 doi |
| 024 | 7 | _ | |a 0743-7463 |2 ISSN |
| 024 | 7 | _ | |a 1520-5827 |2 ISSN |
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| 037 | _ | _ | |a FZJ-2015-02837 |
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| 100 | 1 | _ | |a Iza, Nerea |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a Using Inclusion Complexes with Cyclodextrins To Explore the Aggregation Behavior of a Ruthenium Metallosurfactant |
| 260 | _ | _ | |a Washington, DC |c 2015 |b ACS Publ. |
| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1430726615_23234 |2 PUB:(DE-HGF) |
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| 520 | _ | _ | |a The aggregation behavior of a chiral metallosurfactant, bis(2,2′-bipyridine)(4,4′-ditridecyl-2,2′-bipyridine)ruthenium(II) dichloride (Ru24C13), synthesized as a racemic mixture was characterized by small-angle neutron scattering, light scattering, NMR, and electronic spectroscopies. The analysis of the SANS data indicates that micelles are prolate ellipsoids over the range of concentrations studied, with a relatively low aggregation number, and the micellization takes place gradually with increasing concentration. The presence of cyclodextrins (β-CD and γ-CD) induces the breakup of the micelles and helps to establish that micellization occurs at a very slow exchange rate compared to the NMR time scale. The open structure of this metallosurfactant enables the formation of very stable complexes of 3:1 stoichiometry, in which one CD threads one of the hydrocarbon tails and two CDs the other, in close contact with the polar head. The complex formed with β-CD, more stable than the one formed with the wider γ-CD, is capable of resolving the Δ and Λ enantiomers at high CD/surfactant molar ratios. The chiral recognition is possible due to the very specific interactions taking place when the β-CD covers—via its secondary rim—part of the diimine moiety connected to the hydrophobic tails. A SANS model comprising a binary mixture of hard spheres (complex + micelles) was successfully used to study quantitatively the effect of the CDs on the aggregation of the surfactant. |
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| 700 | 1 | _ | |a Tardajos, Gloria |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a Ortiz, María José |0 P:(DE-HGF)0 |b 3 |
| 700 | 1 | _ | |a Palao, Eduardo |0 P:(DE-HGF)0 |b 4 |
| 700 | 1 | _ | |a Montoro, Teresa |0 P:(DE-HGF)0 |b 5 |
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| 700 | 1 | _ | |a Dreiss, Cécile A. |0 P:(DE-HGF)0 |b 7 |
| 700 | 1 | _ | |a González-Gaitano, Gustavo |0 P:(DE-HGF)0 |b 8 |e Corresponding Author |
| 773 | _ | _ | |a 10.1021/la504929x |g Vol. 31, no. 9, p. 2677 - 2688 |0 PERI:(DE-600)2005937-1 |n 9 |p 2677 - 2688 |t Langmuir |v 31 |y 2015 |x 1520-5827 |
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