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Ly TQ, Yang F, Baldelli S. In situ quantitative study of the phase transition in surfactant adsorption layers at the silica-water interface using total internal reflection Raman spectroscopy. Phys Chem Chem Phys 2021; 23:21701-21713. [PMID: 34581333 DOI: 10.1039/d1cp02645c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Dimethyldodecylamine N-oxide (DDAO), a unique type of surfactant, shows high surface activity with two distinct energy states at the buried hydrophilic silica/aqueous solution interface studied by total internal reflection (TIR) Raman spectroscopy combined with ratiometric and kinetic analysis. Different from other types of surfactant, i.e., ionic and nonionic, the adsorption of DDAO demonstrates a specific critical surface aggregation concentration (csac) at 0.15 mM gives a complete surface coverage of 6.6 ± 0.3 μmol m-2, much lower than the bulk critical micellization concentration (cmc) at the same conditions (csac ≈ 0.072 cmc). A phase transition of adsorbed layers from liquid crystalline as the intermediate state to the disordered liquid phase is spectroscopically and energetically analyzed. The adsorption of DDAO on silica surfaces is described quantitatively in a potential energy curve.
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Affiliation(s)
- Thong Q Ly
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, USA.
| | - Fangyuan Yang
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, USA.
| | - Steven Baldelli
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, USA.
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Salajkova S, Benkova M, Marek J, Sleha R, Prchal L, Malinak D, Dolezal R, Sepčić K, Gunde-Cimerman N, Kuca K, Soukup O. Wide-Antimicrobial Spectrum of Picolinium Salts. Molecules 2020; 25:E2254. [PMID: 32403238 PMCID: PMC7248777 DOI: 10.3390/molecules25092254] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/05/2020] [Accepted: 05/08/2020] [Indexed: 01/27/2023] Open
Abstract
Nosocomial infections, which greatly increase morbidity among hospitalized patients, together with growing antibiotic resistance still encourage many researchers to search for novel antimicrobial compounds. Picolinium salts with different lengths of alkyl chains (C12, C14, C16) were prepared by Menshutkin-like reaction and evaluated with respect to their biological activity, i.e., lipophilicity and critical micellar concentration. Picolinium salts with C14 and C16 side chains achieved similar or even better results when in terms of antimicrobial efficacy than benzalkoniums; notably, their fungicidal efficiency was substantially more potent. The position of the methyl substituent on the aromatic ring does not seem to affect antimicrobial activity, in contrast to the effect of length of the N-alkyl chain. Concurrently, picolinium salts exhibited satisfactory low cytotoxicity against mammalian cells, i.e., lower than that of benzalkonium compounds, which are considered as safe.
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Affiliation(s)
- Sarka Salajkova
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic; (Sa.S.); (M.B.); (J.M.); (L.P.); (D.M.); (R.D.)
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague, Czech Republic
| | - Marketa Benkova
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic; (Sa.S.); (M.B.); (J.M.); (L.P.); (D.M.); (R.D.)
- Department of Epidemiology, University of Defence in Brno, Trebesska 1575, 500 05 Hradec Kralove, Czech Republic;
| | - Jan Marek
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic; (Sa.S.); (M.B.); (J.M.); (L.P.); (D.M.); (R.D.)
- Department of Epidemiology, University of Defence in Brno, Trebesska 1575, 500 05 Hradec Kralove, Czech Republic;
| | - Radek Sleha
- Department of Epidemiology, University of Defence in Brno, Trebesska 1575, 500 05 Hradec Kralove, Czech Republic;
| | - Lukas Prchal
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic; (Sa.S.); (M.B.); (J.M.); (L.P.); (D.M.); (R.D.)
| | - David Malinak
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic; (Sa.S.); (M.B.); (J.M.); (L.P.); (D.M.); (R.D.)
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
| | - Rafael Dolezal
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic; (Sa.S.); (M.B.); (J.M.); (L.P.); (D.M.); (R.D.)
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
| | - Kristina Sepčić
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia; (K.S.); (N.G.-C.)
| | - Nina Gunde-Cimerman
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia; (K.S.); (N.G.-C.)
| | - Kamil Kuca
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic; (Sa.S.); (M.B.); (J.M.); (L.P.); (D.M.); (R.D.)
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Rokitanskeho 62, 500 03 Hradec Kralove, Czech Republic
| | - Ondrej Soukup
- Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, 500 05 Hradec Kralove, Czech Republic; (Sa.S.); (M.B.); (J.M.); (L.P.); (D.M.); (R.D.)
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Wagay TA, Shergujri MA, Askari H. Mixed micellization behavior of benzyldimethylhexadecylammonium chloride with gemini surfactants and their applications in the synthesis of silver nanoparticles. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2019.1710186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Tariq Ahmad Wagay
- Department of Chemistry, North-Eastern Hill University, Shillong, India
| | | | - Hassan Askari
- Department of Chemistry, North-Eastern Hill University, Shillong, India
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Ngo D, Baldelli S. Adsorption of Dimethyldodecylamine Oxide and Its Mixtures with Triton X-100 at the Hydrophilic Silica/Water Interface Studied Using Total Internal Reflection Raman Spectroscopy. J Phys Chem B 2016; 120:12346-12357. [PMID: 27934225 DOI: 10.1021/acs.jpcb.6b08853] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dien Ngo
- Department of Chemistry, University of Houston, Lamar Fleming Jr. Building, 3585 Cullen Blvd.,
Room 112, Houston, Texas 77204-5003, United States
| | - Steven Baldelli
- Department of Chemistry, University of Houston, Lamar Fleming Jr. Building, 3585 Cullen Blvd.,
Room 112, Houston, Texas 77204-5003, United States
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Dutta Choudhury S, Vir P, Mohanty J, Bhasikuttan AC, Pal H. Selective prototropism of lumichrome in cationic micelles and reverse micelles: a photophysical perspective. RSC Adv 2016. [DOI: 10.1039/c5ra23562f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
BHDC micelles and reverse micelles selectively transform the alloxazine form of lumichrome to the anionic isoalloxazine form, around neutral pH.
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Affiliation(s)
| | - Praveen Vir
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Jyotirmayee Mohanty
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | | | - Haridas Pal
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
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Chang H, Jia Z, Zhang P, Li X, Gao W, Wei W. Interaction between quaternary ammonium surfactants with coal pitch and analysis surfactants effects on preparing coal pitch water slurry. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.02.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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7
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Grenoble Z, Baldelli S. Adsorption of Benzyldimethylhexadecylammonium Chloride at the Hydrophobic Silica–Water Interface Studied by Total Internal Reflection Raman Spectroscopy: Effects of Silica Surface Properties and Metal Salt Addition. J Phys Chem B 2013; 117:9882-94. [DOI: 10.1021/jp4015096] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Zlata Grenoble
- Department of Chemistry, University of Houston, 4800 Calhoun
Road, Houston,
Texas 77204-5003, United States
| | - Steven Baldelli
- Department of Chemistry, University of Houston, 4800 Calhoun
Road, Houston,
Texas 77204-5003, United States
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