{"title":"Effect of Hofmeister Anions Series on the Langmuir Film of Tetronic 90R4 and Tetronic 701 Block Copolymers.","authors":"Dipali Roy, Bappaditya Naskar, Tanushree Bala","doi":"10.1021/acs.langmuir.4c01878","DOIUrl":null,"url":null,"abstract":"<p><p>The air-water interfacial behavior of Tetronic 90R4 and Tetronic 701 was studied in the presence of sodium salts with different anions namely <math><msubsup><mrow><mi>PO</mi></mrow><mrow><mn>4</mn></mrow><mrow><mrow><mn>3</mn></mrow><mrow><mo>-</mo></mrow></mrow></msubsup></math>, <math><msubsup><mrow><mi>SO</mi></mrow><mrow><mn>4</mn></mrow><mrow><mrow><mn>2</mn></mrow><mrow><mo>-</mo></mrow></mrow></msubsup></math>, <math><msubsup><mrow><mi>MoO</mi></mrow><mrow><mn>4</mn></mrow><mrow><mrow><mn>2</mn></mrow><mrow><mo>-</mo></mrow></mrow></msubsup></math>, <math><msubsup><mrow><mi>WO</mi></mrow><mrow><mn>4</mn></mrow><mrow><mrow><mn>2</mn></mrow><mrow><mo>-</mo></mrow></mrow></msubsup></math>, Cl<sup>-</sup>, Br<sup>-</sup>, <math><msubsup><mrow><mi>NO</mi></mrow><mrow><mn>3</mn></mrow><mrow><mo>-</mo></mrow></msubsup></math>, I<sup>-</sup>, and SCN<sup>-</sup>. Their presence in the subphase altered the arrangement of both tetronic molecules at the air-water interface. The limiting mean molecular area of the Langmuir film for both tetronics was found to be ion specific; it increased following the series <math><msubsup><mrow><mi>PO</mi></mrow><mrow><mn>4</mn></mrow><mrow><mrow><mn>3</mn></mrow><mrow><mo>-</mo></mrow></mrow></msubsup></math>< <math><msubsup><mrow><mi>SO</mi></mrow><mrow><mn>4</mn></mrow><mrow><mrow><mn>2</mn></mrow><mrow><mo>-</mo></mrow></mrow></msubsup></math>< <math><msubsup><mrow><mi>MoO</mi></mrow><mrow><mn>4</mn></mrow><mrow><mrow><mn>2</mn></mrow><mrow><mo>-</mo></mrow></mrow></msubsup></math>< <math><msubsup><mrow><mi>WO</mi></mrow><mrow><mn>4</mn></mrow><mrow><mrow><mn>2</mn></mrow><mrow><mo>-</mo></mrow></mrow></msubsup></math>< Cl<sup>-</sup>< Br<sup>-</sup>< <math><msubsup><mrow><mi>NO</mi></mrow><mrow><mn>3</mn></mrow><mrow><mo>-</mo></mrow></msubsup></math>< I<sup>-</sup>< SCN<sup>-</sup>, which was found to be aligned with the Hofmeister series of anions. Furthermore, the study explored the effects of the hydration enthalpy, free energy, viscosity B<sub>JD</sub> coefficient, and polarizability of these anions on the interfacial behavior of tetronics. The Langmuir-Blodgett film morphology was also examined in the presence of these salt species using SEM. Morphologies were explained considering kosmotropic and chaotropic nature of these anions.</p>","PeriodicalId":50,"journal":{"name":"Langmuir","volume":" ","pages":"20927-20937"},"PeriodicalIF":3.7000,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Langmuir","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acs.langmuir.4c01878","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/9/24 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The air-water interfacial behavior of Tetronic 90R4 and Tetronic 701 was studied in the presence of sodium salts with different anions namely , , , , Cl-, Br-, , I-, and SCN-. Their presence in the subphase altered the arrangement of both tetronic molecules at the air-water interface. The limiting mean molecular area of the Langmuir film for both tetronics was found to be ion specific; it increased following the series < < < < Cl-< Br-< < I-< SCN-, which was found to be aligned with the Hofmeister series of anions. Furthermore, the study explored the effects of the hydration enthalpy, free energy, viscosity BJD coefficient, and polarizability of these anions on the interfacial behavior of tetronics. The Langmuir-Blodgett film morphology was also examined in the presence of these salt species using SEM. Morphologies were explained considering kosmotropic and chaotropic nature of these anions.
期刊介绍:
Langmuir is an interdisciplinary journal publishing articles in the following subject categories:
Colloids: surfactants and self-assembly, dispersions, emulsions, foams
Interfaces: adsorption, reactions, films, forces
Biological Interfaces: biocolloids, biomolecular and biomimetic materials
Materials: nano- and mesostructured materials, polymers, gels, liquid crystals
Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry
Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals
However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do?
Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*.
This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).