Probing the alkyl chain length effects on molecular packing characteristics of mixed ion pair amphiphile/double-chained cationic surfactant vesicular bilayers with the Langmuir monolayer approach

An Tsung Kuo, Wei Ta Li, Chia Yao Tseng, Fang Wei Hsiao, Chien-Hsiang Chang

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Alkyl chain length effects of added double-chained cationic surfactants, dialkyldimethylammonium bromides (DXDABs), including ditetradecyldimethylammonium bromide (DTDAB), dihexadecyldimethylammonium bromide (DHDAB), and dioctadecyldimethylammonium bromide (DODAB), on the Langmuir monolayer behavior of a pseudodouble-chained ion pair amphiphile, hexadecyltrimethylammonium-dodecylsulfate (HTMA-DS), were analyzed with the Langmuir monolayer technique, infrared reflection-absorption spectroscopy, and Brewster angle microscopy. It was found that DXDA+ of DXDAB could displace HTMA+ from HTMA-DS and the displaced HTMA+ might desorb into the aqueous subphase, with the extent depending on the alkyl chain length of DXDAB. In the mixed HTMA-DS/DODAB monolayer, DODAB possessing long alkyl chains was capable of restraining HTMA+ from desorption with enhanced intermolecular interaction reflected by the favorable molecule aggregation. As for the mixed monolayers of HTMA-DS and DTDAB with short alkyl chains, incomplete displacement of HTMA+ from HTMA-DS by DTDA+ was detected and ascribed to weak intermolecular attraction exhibited by the fractal-like domain formation. Among the three DXDABs, DHDAB with the best molecular structure match to HTMA-DS in terms of alkyl chain length could form well-packed monolayer structures with HTMA-DS. The finding has the implication on the surface characteristic control of catanionic vesicles composed of ion pair amphiphile with double-chained cationic surfactant.

Original languageEnglish
Pages (from-to)23-31
Number of pages9
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume454
Issue number1
DOIs
Publication statusPublished - 2014 Jul 20

Fingerprint

Amphiphiles
monomolecular films
Cationic surfactants
Bromides
Chain length
bromides
Monolayers
surfactants
Ions
ions
Absorption spectroscopy
Fractals
Molecular structure
Desorption
Microscopic examination
Agglomeration
Brewster angle
infrared reflection
Infrared radiation
Molecules

All Science Journal Classification (ASJC) codes

  • Colloid and Surface Chemistry

Cite this

@article{6b1d12cbd81e4feb87adb4438d6c6583,
title = "Probing the alkyl chain length effects on molecular packing characteristics of mixed ion pair amphiphile/double-chained cationic surfactant vesicular bilayers with the Langmuir monolayer approach",
abstract = "Alkyl chain length effects of added double-chained cationic surfactants, dialkyldimethylammonium bromides (DXDABs), including ditetradecyldimethylammonium bromide (DTDAB), dihexadecyldimethylammonium bromide (DHDAB), and dioctadecyldimethylammonium bromide (DODAB), on the Langmuir monolayer behavior of a pseudodouble-chained ion pair amphiphile, hexadecyltrimethylammonium-dodecylsulfate (HTMA-DS), were analyzed with the Langmuir monolayer technique, infrared reflection-absorption spectroscopy, and Brewster angle microscopy. It was found that DXDA+ of DXDAB could displace HTMA+ from HTMA-DS and the displaced HTMA+ might desorb into the aqueous subphase, with the extent depending on the alkyl chain length of DXDAB. In the mixed HTMA-DS/DODAB monolayer, DODAB possessing long alkyl chains was capable of restraining HTMA+ from desorption with enhanced intermolecular interaction reflected by the favorable molecule aggregation. As for the mixed monolayers of HTMA-DS and DTDAB with short alkyl chains, incomplete displacement of HTMA+ from HTMA-DS by DTDA+ was detected and ascribed to weak intermolecular attraction exhibited by the fractal-like domain formation. Among the three DXDABs, DHDAB with the best molecular structure match to HTMA-DS in terms of alkyl chain length could form well-packed monolayer structures with HTMA-DS. The finding has the implication on the surface characteristic control of catanionic vesicles composed of ion pair amphiphile with double-chained cationic surfactant.",
author = "Kuo, {An Tsung} and Li, {Wei Ta} and Tseng, {Chia Yao} and Hsiao, {Fang Wei} and Chien-Hsiang Chang",
year = "2014",
month = "7",
day = "20",
doi = "10.1016/j.colsurfa.2014.04.013",
language = "English",
volume = "454",
pages = "23--31",
journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",
issn = "0927-7757",
publisher = "Elsevier",
number = "1",

}

TY - JOUR

T1 - Probing the alkyl chain length effects on molecular packing characteristics of mixed ion pair amphiphile/double-chained cationic surfactant vesicular bilayers with the Langmuir monolayer approach

AU - Kuo, An Tsung

AU - Li, Wei Ta

AU - Tseng, Chia Yao

AU - Hsiao, Fang Wei

AU - Chang, Chien-Hsiang

PY - 2014/7/20

Y1 - 2014/7/20

N2 - Alkyl chain length effects of added double-chained cationic surfactants, dialkyldimethylammonium bromides (DXDABs), including ditetradecyldimethylammonium bromide (DTDAB), dihexadecyldimethylammonium bromide (DHDAB), and dioctadecyldimethylammonium bromide (DODAB), on the Langmuir monolayer behavior of a pseudodouble-chained ion pair amphiphile, hexadecyltrimethylammonium-dodecylsulfate (HTMA-DS), were analyzed with the Langmuir monolayer technique, infrared reflection-absorption spectroscopy, and Brewster angle microscopy. It was found that DXDA+ of DXDAB could displace HTMA+ from HTMA-DS and the displaced HTMA+ might desorb into the aqueous subphase, with the extent depending on the alkyl chain length of DXDAB. In the mixed HTMA-DS/DODAB monolayer, DODAB possessing long alkyl chains was capable of restraining HTMA+ from desorption with enhanced intermolecular interaction reflected by the favorable molecule aggregation. As for the mixed monolayers of HTMA-DS and DTDAB with short alkyl chains, incomplete displacement of HTMA+ from HTMA-DS by DTDA+ was detected and ascribed to weak intermolecular attraction exhibited by the fractal-like domain formation. Among the three DXDABs, DHDAB with the best molecular structure match to HTMA-DS in terms of alkyl chain length could form well-packed monolayer structures with HTMA-DS. The finding has the implication on the surface characteristic control of catanionic vesicles composed of ion pair amphiphile with double-chained cationic surfactant.

AB - Alkyl chain length effects of added double-chained cationic surfactants, dialkyldimethylammonium bromides (DXDABs), including ditetradecyldimethylammonium bromide (DTDAB), dihexadecyldimethylammonium bromide (DHDAB), and dioctadecyldimethylammonium bromide (DODAB), on the Langmuir monolayer behavior of a pseudodouble-chained ion pair amphiphile, hexadecyltrimethylammonium-dodecylsulfate (HTMA-DS), were analyzed with the Langmuir monolayer technique, infrared reflection-absorption spectroscopy, and Brewster angle microscopy. It was found that DXDA+ of DXDAB could displace HTMA+ from HTMA-DS and the displaced HTMA+ might desorb into the aqueous subphase, with the extent depending on the alkyl chain length of DXDAB. In the mixed HTMA-DS/DODAB monolayer, DODAB possessing long alkyl chains was capable of restraining HTMA+ from desorption with enhanced intermolecular interaction reflected by the favorable molecule aggregation. As for the mixed monolayers of HTMA-DS and DTDAB with short alkyl chains, incomplete displacement of HTMA+ from HTMA-DS by DTDA+ was detected and ascribed to weak intermolecular attraction exhibited by the fractal-like domain formation. Among the three DXDABs, DHDAB with the best molecular structure match to HTMA-DS in terms of alkyl chain length could form well-packed monolayer structures with HTMA-DS. The finding has the implication on the surface characteristic control of catanionic vesicles composed of ion pair amphiphile with double-chained cationic surfactant.

UR - http://www.scopus.com/inward/record.url?scp=84899073235&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84899073235&partnerID=8YFLogxK

U2 - 10.1016/j.colsurfa.2014.04.013

DO - 10.1016/j.colsurfa.2014.04.013

M3 - Article

VL - 454

SP - 23

EP - 31

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

SN - 0927-7757

IS - 1

ER -