Preparation of cross-linked ultrathin films based on layer-by-layer assembly of polymers

Izumi Ichinose, Suguru Mizuki, Shinji Ohno, Hiroaki Shiraishi, Toyoki Kunitake

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Ultrathin cross-linked polymer films were prepared by means of two different assembly techniques. As one of the two approaches, alternate adsorption of poly(allylamine hydrochloride) (PAH) and glutaraldehyde, terephthalaldehyde, and valeraldehyde was studied. Cross-linked polymer layers regularly grow via condensation of glutaraldehyde with the adjacent polymer layers, as confirmed by UV, FT-IR, and XPS measurements. The resulting multilayer film has a nano-porous structure with density of 0.65 g/cm3, and unit thickness of ca. 45 angstroms. The hydrophobic interaction at the PAH surface modified with the aldehyde group appears to be crucial to the successful assembly. In the second approach, multilayer films were similarly prepared from PAH and (methyl vinyl ether)-alt-(monomethyl maleate) copolymer (MMC). Linear film growth is achieved only in limited pH ranges, pH 7-8 for MMC and pH 6 for PAH, to give unit bilayer (PAH+MMC) thickness of 26-33 angstroms. Upon heating in vacuo, more than half of the amino groups in PAH form the imide linkage with monomethyl maleate units of MMC. The cross-linked ultrathin polymer films prepared on a microporous polymer support display selective permeation of methyl orange against myoglobin.

Original languageEnglish
Pages (from-to)1065-1070
Number of pages6
JournalPolymer Journal
Volume31
Issue number11 pt 2
Publication statusPublished - Dec 1 1999

Fingerprint

Ultrathin films
Polycyclic aromatic hydrocarbons
Polymers
Copolymers
Multilayer films
Glutaral
Polymer films
Imides
Myoglobin
Film growth
Aldehydes
Permeation
Condensation
Ethers
X ray photoelectron spectroscopy
maleic acid
Heating
Adsorption

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Ichinose, I., Mizuki, S., Ohno, S., Shiraishi, H., & Kunitake, T. (1999). Preparation of cross-linked ultrathin films based on layer-by-layer assembly of polymers. Polymer Journal, 31(11 pt 2), 1065-1070.

Preparation of cross-linked ultrathin films based on layer-by-layer assembly of polymers. / Ichinose, Izumi; Mizuki, Suguru; Ohno, Shinji; Shiraishi, Hiroaki; Kunitake, Toyoki.

In: Polymer Journal, Vol. 31, No. 11 pt 2, 01.12.1999, p. 1065-1070.

Research output: Contribution to journalArticle

Ichinose, I, Mizuki, S, Ohno, S, Shiraishi, H & Kunitake, T 1999, 'Preparation of cross-linked ultrathin films based on layer-by-layer assembly of polymers', Polymer Journal, vol. 31, no. 11 pt 2, pp. 1065-1070.
Ichinose I, Mizuki S, Ohno S, Shiraishi H, Kunitake T. Preparation of cross-linked ultrathin films based on layer-by-layer assembly of polymers. Polymer Journal. 1999 Dec 1;31(11 pt 2):1065-1070.
Ichinose, Izumi ; Mizuki, Suguru ; Ohno, Shinji ; Shiraishi, Hiroaki ; Kunitake, Toyoki. / Preparation of cross-linked ultrathin films based on layer-by-layer assembly of polymers. In: Polymer Journal. 1999 ; Vol. 31, No. 11 pt 2. pp. 1065-1070.
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