Studies on Langmuir-Blodgett films fabricated from the monolayers containing polydiacetylene and polythiophene derivatives

Tsumura, Akira; Kurata, Tetsuyuki; Suzuki, S.; Nobutoki, Hideharu; Koezuka, Hiroshi; Moriwaki, T.

doi:10.1016/0040-6090(89)90328-3

Cited by 20 publications

(6 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was found that polythiophene does not affect the polymerisation of the diacetylenic acid and the LB film has a layered structure with oriented molecules of both components; the area per molecule in the mixed monolayer and the structure spacing in the LB film indicate the formation of bilayer films. 85 In this LB film variant, the bilayer consists of identical mixed monolayers rather than of alternating monolayers of different polymers (as in the previous case).…”

Section: Polythiophene Monolayers and Langmuir ± Blodgett Filmsmentioning

confidence: 98%

“…the absence of interactions between the polydiacetylene exciton and the polythiophene macromolecules. 32 Mixed monolayers of poly(3-hexylthiophene) and pentacosa-10,12-diynoic acid were studied by Tsumura et al 85 Stable monolayers were obtained for various component ratios; after transferring them onto a solid substrate by the vertical method they were polymerised by exposure to light. It was found that polythiophene does not affect the polymerisation of the diacetylenic acid and the LB film has a layered structure with oriented molecules of both components; the area per molecule in the mixed monolayer and the structure spacing in the LB film indicate the formation of bilayer films.…”

Section: Polythiophene Monolayers and Langmuir ± Blodgett Filmsmentioning

confidence: 99%

See 1 more Smart Citation

Polymer monolayers and Langmuir–Blodgett films. Polythiophenes

Arslanov¹

2000

Russ. Chem. Rev.

View full text Add to dashboard Cite

Section: Polythiophene Monolayers and Langmuir ± Blodgett Filmsmentioning

confidence: 98%

Section: Polythiophene Monolayers and Langmuir ± Blodgett Filmsmentioning

confidence: 99%

Polymer monolayers and Langmuir–Blodgett films. Polythiophenes

Arslanov¹

2000

Russ. Chem. Rev.

View full text Add to dashboard Cite

“…In order to obtain solubility, linear aliphatic side chains can be attached to the backbone. These polymers can directly be processed by means of the LB technique. − …”

Section: Introductionmentioning

confidence: 99%

“…These polymers can directly be processed by means of the LB technique. [2][3][4][5][6][7][8][9][10] Alternatively, to obtain multilayer films of poly(pphenylenevinylene) and poly(p-thienylenevinylene), flexible nonconjugated precursor polymers have been used. Langmuir monolayers of polyanion complexes of these precursor polymers could be transferred by a conventional LB dipping process.…”

Section: Introductionmentioning

confidence: 99%

Oxidative Coupling Polymerization in a Langmuir Monolayer of Octadecyl 3,5-Diaminobenzoate

et al. 1996

View full text Add to dashboard Cite

In a Langmuir monolayer of the surface active monomer octadecyl 3,5-diaminobenzoate (ODDB), stabilized at a surface pressure of 10 mN/m and a temperature of 23.7°C at the air-water interface, oxidative coupling polymerization occurs when copper(II) chloride was added or already was present in the subphase. Even in the absence of the catalyst this reaction takes place. Deposition of the polymerized monolayer onto glass, zinc sulfide, or gold substrates, using the vertical dipping method, gave transfer ratios between 0 and 0.4 on the downstroke and 1 on the upstroke. The multilayer films on zinc sulfide and gold substrates were characterized by means of Fourier transform IR spectroscopy, and multilayer films on quartz were characterized by means of UV/vis spectroscopy. Collected monolayers were characterized by means of size exclusion chromatography and again Fourier transform IR and UV/vis spectroscopy. During the stabilization of the monolayer without addition of copper(II) chloride to the subphase, the area per molecule decreased very slowly. Addition of copper(II) chloride enhanced this effect. The reduction of the area per molecule is probably caused by the polymerization itself accompanied by a reorientation of the molecules in the monolayer at the air-water interface. After stabilization the area per molecule was found to be about 27 Å 2 and electron micrographs showed the formation of a smooth monolayer. From this it has been concluded that a closely packed monolayer was formed. Fourier transform IR and UV/vis spectra of polymerized multilayer materials are analogous to the spectra of the azo polymer of ODDB prepared in bulk solution. Size exclusion chromatography revealed that the molecular weight and the molecular weight distribution of the coupling product with and without copper(II) chloride in the subphase were the same. The average molecular weight was somewhat lower than the high-molecular-weight part of the corresponding material prepared in bulk solution.

show abstract

“…Poly(3-n-alkylthiophenes) have been of interest to several groups studying polymer LB films (Refs. [14][15][16][17][18][19][20][21][22], the interest being focused mostly on PAT'S containing 5 to 8 carbons in the alkyl chain. We used polymers with longer alkyl chains expecting that a better compatibility between Long hydrocarbon chains of the polymers and those of the builders would improve the homogeneity of the mixed monolayers and, in consequence, would enhance the stability of the mixed LB films.…”

Section: Introductionmentioning

confidence: 99%

Multicomponent lb films containing pre‐formed poly(3‐n‐Alkylthiophenes)

Sworakowski

Bieńkowski

Chyla

et al. 1996

Macromolecular Symposia

View full text Add to dashboard Cite

The paper reports on the deposition of two‐component Langmuir‐Blodgett films containing poly(3‐n‐alkylthiophenes) with “film‐builders” —low‐molecular‐weight amphiphilic molecules facilitating film formation. Fatty acids and 3‐n‐octadecylpyrrole were used as builders. The thicknesses and electric permittivities of the films were determined by measurements of the surface plasmon resonance; it was found that the former parameter is controlled by the length of the builder molecules. The electrical conductivities of the deposited films were of the order of 1 μS/m. The contact with oxides gives rise to an abrupt increase of conductivity by several orders of magnitude, followed by a decrease due to an irreversible destruction of the π‐electron system of the polymer.

show abstract

Studies on Langmuir-Blodgett films fabricated from the monolayers containing polydiacetylene and polythiophene derivatives

Cited by 20 publications

References 5 publications

Polymer monolayers and Langmuir–Blodgett films. Polythiophenes

Polymer monolayers and Langmuir–Blodgett films. Polythiophenes

Oxidative Coupling Polymerization in a Langmuir Monolayer of Octadecyl 3,5-Diaminobenzoate

Multicomponent lb films containing pre‐formed poly(3‐n‐Alkylthiophenes)

Contact Info

Product

Resources

About