Study the effect of α,β,γ-cyclodextrins on the critical micelles concentration (c.m.c.) of sodium dodecyl sulphate (SDS) by using 1-methyl-4-[4′-aminostyryl]pyridinium iodide

Al-Sherbini, El-Sayed A.M.

doi:10.1016/j.colsurfa.2009.09.018

Cited by 9 publications

(12 citation statements)

References 16 publications

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“…Similar results of CMC increase in the mixture of cyclodextrins and sodium dodecyl sulfate (SDS) micelles were reported previously. 39,40 Further increasing the concentration of α-CD (2−4 mM) resulted in increased inhomogeneity in the system. In other words, the addition of CD and the formation of inclusion complex may lead to a mixture of unimers, CD, micelles and dissociated micelles, micelle aggregates, Figure 6a shows the micelles size decrement after addition of α-CD.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Similar results of CMC increase in the mixture of cyclodextrins and sodium dodecyl sulfate (SDS) micelles were reported previously. 40,41 Further increasing concentration of α-CD…”

Section: Formation Of Inclusion Complex With α-Cdmentioning

confidence: 99%

“…When CD is added, the pseudorotaxane structure no longer resembles a normal micelle. 40,41 The particle size and morphology were examined by atomic force microscopy (AFM), as shown in Figure 6 (b-c).…”

Section: Formation Of Inclusion Complex With α-Cdmentioning

confidence: 99%

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Highly Efficient Supramolecular Aggregation-Induced Emission-Active Pseudorotaxane Luminogen for Functional Bioimaging

et al. 2017

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The direct tracking of cells using fluorescent dyes is a constant challenge in cell therapy due to aggregation-induced quenching (ACQ) effect and biocompatibility issues. Here, we demonstrate the development of a biocompatible and highly efficient aggregation-induced emission (AIE)-active pseudorotaxane luminogen based on tetraphenylethene conjugated poly(ethylene glycol) (TPE-PEG) (guest) and α-cyclodextrin (α-CD) (host). It is capable of showing significant fluorescent emission enhancement at the 400-600 nm range when excited at 388 nm, without increasing the concentration of AIE compound. The fluorescent intensity of TPE-PEG solution was effectively enhanced by 4-12 times with gradual addition of 1-4 mM of α-CD. 2D NOSEY H NMR revealed clear correlation spots between the characteristic peaks of α-CD and PEG, indicating the interaction between protons of ethylene glycol and cyclodextrin, and the structures are mainly based on threaded α-CD. The host-guest complex exhibits boosted fluorescent emission because the PEG side chains are confined in "nano-cavities" (host), thus, applying additional restriction on intermolecular rotation of TPE segments. In vitro cell experiments demonstrated the potential of AIE-active pseudorotaxane polymer as a biocompatible bioimaging probe.

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Section: ■ Results and Discussionmentioning

confidence: 99%

“…Similar results of CMC increase in the mixture of cyclodextrins and sodium dodecyl sulfate (SDS) micelles were reported previously. 40,41 Further increasing concentration of α-CD…”

Section: Formation Of Inclusion Complex With α-Cdmentioning

confidence: 99%

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Highly Efficient Supramolecular Aggregation-Induced Emission-Active Pseudorotaxane Luminogen for Functional Bioimaging

et al. 2017

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“…7), as the surfactant molecules that form inclusion complexes with ␣-CDs have lower hydrophobicity. A CMC increase upon cyclodextrin addition to SDS aqueous solution has been observed by other experimental methods [20,28,53]. The micelle number density increases compared to that in the absence of CD (by ∼15% for the case of 25 mM SDS and 39% for the case of 50 mM SDS) when the molar ratio of ␣-CD to SDS is less Effect of ␣-CD on parameters describing the SDS micelle structure and inter-micelle interactions in D2O obtained by fitting SANS data using the form and structure factors described in the text.…”

Section: Effect Of ˛-Cyclodextrin On Sds Micelle Composition Structumentioning

confidence: 80%

Self-assembly control via molecular recognition: Effect of cyclodextrins on surfactant micelle structure and interactions determined by SANS

Fajalia

Tsianou

2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…Such an increase in the CMC value in CD solution is known for several other surfactants. 65 However, once the formation of micelles is completed at B15 mM of SDS, no further change in the emission intensity of ThT was observed. This result clearly indicates that in the presence of excess SDS, ThT is quantitatively transferred from the g-CD nanocavity to the SDS micelles.…”

Section: Ternarymentioning

confidence: 97%

An ultrafast molecular rotor based ternary complex in a nanocavity: a potential “turn on” fluorescence sensor for the hydrocarbon chain

Murudkar

Mora

Singh

et al. 2015

Phys. Chem. Chem. Phys.

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Formation of a ternary complex by an ultrafast molecular rotor (UMR) with a macrocyclic cavitand has been investigated for the sensitive detection of the alkyl chain of a surfactant. A benzothiazole based UMR, Thioflavin-T (ThT), has been used as a fluorescent probe. It is shown that ThT forms a very weak inclusion complex with γ-cyclodextrin (γ-CD) with an association constant of 8.8 M(-1). However, the addition of a small amount of surfactant results in a significant increase in the emission intensity of ThT in γ-CD solution. From detailed steady-state and time-resolved fluorescence measurements and NMR studies, it has been inferred that the addition of the surfactant results in the formation of a ternary complex through the inclusion of its alkyl chain inside the γ-CD nanocavity. In such a ternary complex, the non-radiative torsional motion in ThT is largely prevented due to a large increase in the frictional force inside the nanocavity and results in a significant fluorescence enhancement. The formation of the binary and the ternary complexes in the present system has been further supported by the molecular docking and subsequent molecular dynamics simulation studies. The present result indicates that the inclusion complex with an UMR as a guest could be a potential candidate for the efficient detection of insoluble organic molecules, especially hydrocarbons.

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Study the effect of α,β,γ-cyclodextrins on the critical micelles concentration (c.m.c.) of sodium dodecyl sulphate (SDS) by using 1-methyl-4-[4′-aminostyryl]pyridinium iodide

Cited by 9 publications

References 16 publications

Highly Efficient Supramolecular Aggregation-Induced Emission-Active Pseudorotaxane Luminogen for Functional Bioimaging

Highly Efficient Supramolecular Aggregation-Induced Emission-Active Pseudorotaxane Luminogen for Functional Bioimaging

Self-assembly control via molecular recognition: Effect of cyclodextrins on surfactant micelle structure and interactions determined by SANS

An ultrafast molecular rotor based ternary complex in a nanocavity: a potential “turn on” fluorescence sensor for the hydrocarbon chain

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