Closo-dodecaborate-based dianionic surfactants with distorted
classical morphology: Synthesis and atypical micellization in
water

J 2023

Closo-dodecaborate-based dianionic surfactants with distorted classical morphology: Synthesis and atypical micellization in water

HLELI, Belhssen; Ziga MEDOS; Peter OGRIN; Zdenek TOSNER; Sami KEREICHE et al.

Základní údaje

Originální název

Closo-dodecaborate-based dianionic surfactants with distorted classical morphology: Synthesis and atypical micellization in water

Autoři

HLELI, Belhssen; Ziga MEDOS; Peter OGRIN; Zdenek TOSNER; Sami KEREICHE; Michael GRADZIELSKI; Tomaz URBIC; Marija BESTER-ROGAC a Pavel MATEJICEK

Vydání

Journal of Colloid and Interface Science, San Diego, USA, Academic Press Inc. Els, 2023, 0021-9797

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10403 Physical chemistry

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 9.400

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:90127/23:00139202

Organizační jednotka

CIISB II

Klíčová slova anglicky

Dodecaborate; Surfactants; Self -assembly; Micelles; Calorimetry; Simulations

Štítky

ne MU, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 28. 3. 2025 15:29, Mgr. Eva Dubská

Anotace

V originále

Hypothesis: To challenge the classical concept of step-like micellization of ionic surfactants with singular critical micelle concentration, novel amphiphilic compounds with bulky dianionic head and the alkoxy tail connected via short linker, which can complex sodium cations, were synthesized in the form of disodium salts.Experiment: The surfactants were synthesized by opening of a dioxanate ring attached to closo-dodecaborate by activated alcohol, which allows for attachment of alkyloxy tails of desired length to boron cluster dianion. The synthesis of the compounds with high cationic purity (sodium salt) is described. Self-assembly of the surfactant compound at air/water interface and in bulk water was studied by tensiometry, light and small angle X-ray scattering, electron microscopy, NMR spectroscopy, MD simulations and by isothermal titration calorimetry, ITC. The peculiarities in the micelle structure and formation were revealed by thermodynamic modelling and MD simulations of the micellization process. Findings: In an atypical process, the surfactants self-assemble in water to form relatively small micelles, where the aggregation number is decreasing with the surfactant concentration. The extensive counterion binding is a key characteristic of the micelles. The analysis strongly indicates complex compensation between the degree of bound sodium ions and the aggregation number. For the first time, a three-step thermodynamic model was used to estimate the thermodynamic parameters associated with micellization process. Diverse micelles differing in size and counterion binding can (co-)exist in the solution over the broad concentration and temperature range. Thus, the concept of step-like micellization was found inappropriate for these types of micelles.

Návaznosti

90127, velká výzkumná infrastruktura

Název: CIISB II

Citovat

HLELI, Belhssen; Ziga MEDOS; Peter OGRIN; Zdenek TOSNER; Sami KEREICHE; Michael GRADZIELSKI; Tomaz URBIC; Marija BESTER-ROGAC a Pavel MATEJICEK. Closo-dodecaborate-based dianionic surfactants with distorted classical morphology: Synthesis and atypical micellization in water. Journal of Colloid and Interface Science. San Diego, USA: Academic Press Inc. Els, 2023, roč. 648, oct, s. 809-819. ISSN 0021-9797. Dostupné z: https://doi.org/10.1016/j.jcis.2023.06.013.

@article{2487283,
   author = {Hleli, Belhssen and Medos, Ziga and Ogrin, Peter and Tosner, Zdenek and Kereiche, Sami and Gradzielski, Michael and Urbic, Tomaz and BesterandRogac, Marija and Matejicek, Pavel},
   article_location = {San Diego, USA},
   article_number = {oct},
   doi = {https://doi.org/10.1016/j.jcis.2023.06.013},
   keywords = {Dodecaborate; Surfactants; Self -assembly; Micelles; Calorimetry; Simulations},
   language = {eng},
   issn = {0021-9797},
   journal = {Journal of Colloid and Interface Science},
   title = {Closo-dodecaborate-based dianionic surfactants with distorted classical morphology: Synthesis and atypical micellization in water},
   url = {https://www.sciencedirect.com/science/article/pii/S0021979723010330?via%3Dihub},
   volume = {648},
   year = {2023}
}

TY  - JOUR
ID  - 2487283
AU  - Hleli, Belhssen - Medos, Ziga - Ogrin, Peter - Tosner, Zdenek - Kereiche, Sami - Gradzielski, Michael - Urbic, Tomaz - Bester-Rogac, Marija - Matejicek, Pavel
PY  - 2023
TI  - Closo-dodecaborate-based dianionic surfactants with distorted classical morphology: Synthesis and atypical micellization in water
JF  - Journal of Colloid and Interface Science
VL  - 648
IS  - oct
SP  - 809-819
EP  - 809-819
PB  - Academic Press Inc. Els
SN  - 00219797
KW  - Dodecaborate
KW  - Surfactants
KW  - Self -assembly
KW  - Micelles
KW  - Calorimetry
KW  - Simulations
UR  - https://www.sciencedirect.com/science/article/pii/S0021979723010330?via%3Dihub
N2  - Hypothesis: To challenge the classical concept of step-like micellization of ionic surfactants with singular critical micelle concentration, novel amphiphilic compounds with bulky dianionic head and the alkoxy tail connected via short linker, which can complex sodium cations, were synthesized in the form of disodium salts.Experiment: The surfactants were synthesized by opening of a dioxanate ring attached to closo-dodecaborate by activated alcohol, which allows for attachment of alkyloxy tails of desired length to boron cluster dianion. The synthesis of the compounds with high cationic purity (sodium salt) is described. Self-assembly of the surfactant compound at air/water interface and in bulk water was studied by tensiometry, light and small angle X-ray scattering, electron microscopy, NMR spectroscopy, MD simulations and by isothermal titration calorimetry, ITC. The peculiarities in the micelle structure and formation were revealed by thermodynamic modelling and MD simulations of the micellization process. Findings: In an atypical process, the surfactants self-assemble in water to form relatively small micelles, where the aggregation number is decreasing with the surfactant concentration. The extensive counterion binding is a key characteristic of the micelles. The analysis strongly indicates complex compensation between the degree of bound sodium ions and the aggregation number. For the first time, a three-step thermodynamic model was used to estimate the thermodynamic parameters associated with micellization process. Diverse micelles differing in size and counterion binding can (co-)exist in the solution over the broad concentration and temperature range. Thus, the concept of step-like micellization was found inappropriate for these types of micelles.
ER  -

HLELI, Belhssen; Ziga MEDOS; Peter OGRIN; Zdenek TOSNER; Sami KEREICHE; Michael GRADZIELSKI; Tomaz URBIC; Marija BESTER-ROGAC a Pavel MATEJICEK. Closo-dodecaborate-based dianionic surfactants with distorted classical morphology: Synthesis and atypical micellization in water. \textit{Journal of Colloid and Interface Science}. San Diego, USA: Academic Press Inc. Els, 2023, roč.~648, oct, s.~809-819. ISSN~0021-9797. Dostupné z: https://doi.org/10.1016/j.jcis.2023.06.013.

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