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Fameau AL, Bordes R, Evenäs L, Stubenrauch C. Liquid foams as sensors for the detection of biomarkers. J Colloid Interface Sci 2023; 651:987-991. [PMID: 37586153 DOI: 10.1016/j.jcis.2023.08.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 08/18/2023]
Abstract
Bioassays are widely used in healthcare to detect and quantify biomarkers, such as molecules or enzymes, which are crucial in monitoring diseases and health conditions. In developed countries, healthcare professionals use specialized reagents and equipment's to perform these bioassays. However, in less-industrialized countries, the creation of low cost, fast, and technically simple bioassays is required. Herein, we propose a simple approach for detecting biochemical markers using host-guest complexes containing a surfactant. When the biochemical marker is present, the host-guest complex is disrupted, releasing the surfactant and producing foam. The read-out mechanism relies on the change of foam volume as function of biomarker concentration. This change is quantifiable by the naked eye and can be measured with a simple ruler. We claim that the use of foams as sensing tool is an attractive, inexpensive, fast, and easy to handle on-site detection method.
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Affiliation(s)
- Anne-Laure Fameau
- INRAe, University Lille, CNRS, Centrale Lille, UMET, 59000 Lille, France.
| | - Romain Bordes
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Göteborg, Sweden
| | - Lars Evenäs
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Göteborg, Sweden
| | - Cosima Stubenrauch
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
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Luviano AS, Costas M. High Interfacial Viscoelasticity of Aqueous Mixed Dodecyltrimethylammonium Bromide-Sodium Dodecyl Sulfate Surfactants Forming Inclusion Complexes with α-Cyclodextrin. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:11741-11749. [PMID: 37561396 DOI: 10.1021/acs.langmuir.3c01348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Mixtures of anionic-cationic surfactants have shown high synergistic effects in the bulk solution and at the liquid/air interface. These studies have been limited to a reduced concentration range, where there is no formation of aggregates or precipitates. The addition of host molecules, such as cyclodextrins, to these systems reduces the effects of precipitation by forming inclusion complexes and also modifies the values of other surfactant properties, like the Krafft temperature and the critical aggregation concentration (CAC). We studied the interfacial synergistic effects promoted by electrostatic interactions, using the Rosen model to calculate an interaction parameter for mixtures of sodium dodecyl sulfate (SDS) and dodecyltrimethylammonium bromide (DTAB) in the presence of α-cyclodextrin (αCD), in aqueous solutions. We measured the CAC of SDS-DTAB-αCD mixtures using a pendant drop tensiometer, with the αCD concentration fixed at 10 mM and at 283.15 K. We performed rheological measurements on the mixtures where the surfactant total concentration is fixed below the measured CAC, varying the αCD concentration and temperature. We found that the dilatational modulus shows a clear correlation with the interaction parameter. It appears that the attractive interactions within the film are those due to the inclusion complexes formed by two αCD and one surfactant molecule, which according to the previous studies, is the dominant species in both the bulk and liquid/air interface. The synergistic effect observed here for SDS-DTAB surfactant mixtures with αCD can be applied to systems and processes (drop emission, drug delivery methods, stabilization of viral capsids and bacterial membranes, and emulsification) where interfacial processes require specific viscoelastic properties.
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Affiliation(s)
- Alberto S Luviano
- Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, México
| | - Miguel Costas
- Laboratorio de Biofisicoquímica, Departamento de Fisicoquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 04510, México
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Dos Santos Silva Araújo L, Lazzara G, Chiappisi L. Cyclodextrin/surfactant inclusion complexes: An integrated view of their thermodynamic and structural properties. Adv Colloid Interface Sci 2021; 289:102375. [PMID: 33592397 DOI: 10.1016/j.cis.2021.102375] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/25/2021] [Accepted: 01/27/2021] [Indexed: 12/14/2022]
Abstract
Cyclodextrins (CDs) play an important role in self-assembly systems of amphiphiles. The structure of CDs provides distinguished physicochemical properties, including the ability to form host-guest complexes. The complexation affects the properties of guest molecules and can produce supramolecular aggregates with desirable characteristics for fundamental and practical applications. Surfactants are particularly attractive host molecules due to their wide variety, availability, responsiveness to different stimuli, and high relevance in different fields, e.g. medical, cosmetic, pharmaceutical, and food industries. The tendency of organization in higher-order supramolecular aggregates arises the interest in applying such versatile complexes in the development of novel materials. In this review, we provide a comprehensive overview of the thermodynamics aspects of surfactants and CDs inclusion complexes formation in aqueous environment, emphasizing the assessment of the interactions, thermodynamic driving forces, and structural aspects. Also, the most common analytical techniques used to gather deep insight into the aspects of CDs complexes are discussed and the perspectives for the surfactant-cyclodextrin complexes are pointed out.
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Affiliation(s)
- Larissa Dos Santos Silva Araújo
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Viale delle Scienze pad 17, 90128 Palermo, Italy; Institut Max von Laue - Paul Langevin, 71 avenue des Martyrs, 38042 Grenoble, France
| | - Giuseppe Lazzara
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Viale delle Scienze pad 17, 90128 Palermo, Italy.
| | - Leonardo Chiappisi
- Institut Max von Laue - Paul Langevin, 71 avenue des Martyrs, 38042 Grenoble, France.
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Kumari S, Halder S, Aggrawal R, Sundar G, Saha SK. Effect of gemini surfactants on binding interactions of Coumarin 485 with calf thymus deoxyribonucleic acid in presence of nanotubes of β-cyclodextrin. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kumari S, Sundar G, Saha SK. Binding Interaction of Gemini Surfactants with Nanotubes ofβ‐Cyclodextrin and Controlled Release of Guest Molecules: Effect of Spacer Chain Length and Concentration of Surfactants. ChemistrySelect 2019. [DOI: 10.1002/slct.201803998] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sunita Kumari
- Department of ChemistryBirla Institute of Technology & Science (BITS) PilaniPilani Campus, Pilani Rajasthan 333031 India
| | - Ganapathisubramanian Sundar
- Department of ChemistryBirla Institute of Technology & Science (BITS) PilaniHyderabad Campus, Jawahar Nagar Telangana 500078 India
| | - Subit K. Saha
- Department of ChemistryBirla Institute of Technology & Science (BITS) PilaniPilani Campus, Pilani Rajasthan 333031 India
- Department of ChemistryBirla Institute of Technology & Science (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Telangana 500078 India
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Oremusová J, Vitková Z, Vitko A, Tárník M, Miklovičová E, Ivánková O, Murgaš J, Krchňák D. Effect of Molecular Composition of Head Group and Temperature on Micellar Properties of Ionic Surfactants with C12 Alkyl Chain. Molecules 2019; 24:molecules24030651. [PMID: 30759856 PMCID: PMC6384972 DOI: 10.3390/molecules24030651] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 02/01/2019] [Accepted: 02/06/2019] [Indexed: 12/05/2022] Open
Abstract
The paper analyses influences of the temperature and hydrophilic groups on micellar properties of ionic surfactants with 12-carbonic hydrophobic chains. The aim is to assess the impact of hydrophilic groups and temperature on thermodynamic parameters and micellization. This knowledge is indispensable for the formulation of new dosage forms. The method uses conductometric measurements. The following hydrophilic groups are analyzed: trimethylammonium bromide, trimethylammonium chloride, ethyldimethylammonium bromide, didodecyldimethylammonium bromide, pyridinium chloride, benzyldimethyl-ammonium chloride, methylephedrinium bromide, cis and trans-[(2-benzyloxy)-cyclohexyl-methyl]-N, N-dimethylammonium bromide, sodium sulphate and lithium sulphate. Except for a few cases, there is a good agreement between values of critical micellar concentrations (CMC) and critical vesicle concentration (CVC) obtained here and those which were obtained by other authors and/or by other physicochemical methods. Values of the CMC are compared with respect to the molar masses of hydrophilic groups. It was found that CMC values increased non-linearly with increasing system temperature. The degrees of counterion binding and thermodynamic parameters, like the standard molar Gibbs energy, enthalpy and entropy of micellization are determined and discussed in detail. The results obtained will be incorporated into in silico processes of modeling and design of optimal dosage forms, a current interdisciplinary research focus of the team.
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Affiliation(s)
- Jarmila Oremusová
- Department of Physical Chemistry of Drugs, Faculty of Pharmacy, Comenius University, Odbojárov 10, 832 32 Bratislava, Slovakia.
| | - Zuzana Vitková
- Department of Galenic Pharmacy, Faculty of Pharmacy, Comenius University, 832 32 Bratislava, Slovakia.
| | - Anton Vitko
- Institute of Robotics and Cybernetics, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, 812 19 Bratislava, Slovakia.
| | - Marián Tárník
- Institute of Robotics and Cybernetics, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, 812 19 Bratislava, Slovakia.
| | - Eva Miklovičová
- Institute of Robotics and Cybernetics, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, 812 19 Bratislava, Slovakia.
| | - Oľga Ivánková
- Department of Structural Mechanics, Faculty of Civil Engineering, Slovak University of Technology, 810 05 Bratislava, Slovakia.
| | - Ján Murgaš
- Institute of Robotics and Cybernetics, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, 812 19 Bratislava, Slovakia.
| | - Daniel Krchňák
- Department of Galenic Pharmacy, Faculty of Pharmacy, Comenius University, 832 32 Bratislava, Slovakia.
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Zhang M, Yang H, Wang S, Zhang W, Hou Q, Guo D, Liu F, Chen T, Wu X, Wang J. PAMAM-Based Dendrimers with Different Alkyl Chains Self-Assemble on Silica Surfaces: Controllable Layer Structure and Molecular Aggregation. J Phys Chem B 2018; 122:6648-6655. [PMID: 29897753 DOI: 10.1021/acs.jpcb.8b02534] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Amphiphilic poly(amidoamine) (PAMAM) dendrimers are a well-known dendritic family due to their remarkable ability to self-assemble on solid surface. However, the relationship between molecular conformation (or adsorption kinetics) of a self-assembled layer and molecular amphiphilicity of such kind of dendrimer is still lacking, which limits the development of modulating self-assembling structures and surface functionality. With this in mind, we synthesized a series of amphiphilic PAMAM-based dendrimers, denoted as G1C n, with different alkyl chains ( n = 8, 12, and 16), and investigated the molecular aggregation on silica surfaces by means of quartz crystal microbalance with dissipation, atomic force microscopy, and contact angle. After rinsing, remaining adsorption amounts of G1C12 were higher than those of G1C8 at high concentrations, suggesting that G1C12 adlayers were more stable due to the stronger intermolecular hydrophobic interactions, whereas it preferred to adopt the intramolecular hydrophobic interactions for G1C16, with low adsorption amounts and unstable adlayers. Bilayer-like structures were inferred in G1C8 and G1C12 adlayers with loose conformation, whereas monolayer structures were likely to exist in the sparse adsorption film of G1C16. Our results provided more detailed understanding of the effect of molecular structure on the self-assembled structures of amphiphilic dendrimers on solid surfaces, shedding light on the controlled microstructure and wettability of functional surface by modulating the length of hydrophobic chains of dendrimers and a potential application of dendrimer-substrate combinations.
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Affiliation(s)
- Minghui Zhang
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Hui Yang
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Shujuan Wang
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Wei Zhang
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Qingfeng Hou
- Key Laboratory of Oilfield Chemistry , Research Institute of Petroleum Exploration and Development (RIPED), CNPC , Beijing 100083 , P. R. China
| | - Donghong Guo
- Key Laboratory of Oilfield Chemistry , Research Institute of Petroleum Exploration and Development (RIPED), CNPC , Beijing 100083 , P. R. China
| | - Fanghui Liu
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Ting Chen
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
| | - Xu Wu
- Department of Chemistry and Chemical Engineering , Guangzhou University , Guangzhou 510006 , Guangdong , P. R. China
| | - Jinben Wang
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , P. R. China
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Fan B, Hao H, Yang B, Li Y. Insights into the inhibition mechanism of a novel supramolecular complex towards the corrosion of mild steel in the condensate water: experimental and theoretical studies. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3451-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Host-guest interactions between cyclodextrins and surfactants with functional groups at the end of the hydrophobic tail. J Colloid Interface Sci 2016; 491:336-348. [PMID: 28056443 DOI: 10.1016/j.jcis.2016.12.040] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Revised: 12/15/2016] [Accepted: 12/16/2016] [Indexed: 11/23/2022]
Abstract
The aim of this work was to investigate the influence of the incorporation of substituents at the end of the hydrophobic tail on the binding of cationic surfactants to α-, β-, and γ-cyclodextrins. The equilibrium binding constants of the 1:1 inclusion complexes formed follow the trend K1(α-CD)>K1(β-CD)≫K1(γ-CD), which can be explained by considering the influence of the CD cavity volume on the host-guest interactions. From the comparison of the K1 values obtained for dodecyltriethylammonium bromide, DTEAB, to those estimated for the surfactants with the substituents, it was found that the incorporation of a phenoxy group at the end of the hydrocarbon tail does not affect K1, and the inclusion of a naphthoxy group has some influence on the association process, slightly diminishing K1. This makes evident the importance of the contribution of hydrophobic interactions to the binding, the length of the hydrophobic chain being the key factor determining K1. However, the presence of the aromatic rings does influence the location of the host and the guest in the inclusion complexes. The observed NOE interactions between the aromatic protons and the CD protons indicate that the aromatic rings are partially inserted within the host cavity, with the cyclodextrin remaining close to the aromatic rings, which could be partially intercalated in the host cavity. To the authors' knowledge this is the first study on the association of cyclodextrins with monomeric surfactants incorporating substituents at the end of the hydrophobic tail.
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