The structure of langmuir–blodgett films from substituted phthalocyaninato-polysiloxanes

Sauer, Thomas; Arndt, Thomas; Batchelder, D. N.; Калачев, А. А.; Wegner, Gerhard

doi:10.1016/0040-6090(90)90057-k

Cited by 113 publications

(77 citation statements)

References 23 publications

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“…This result is in contrast with the results obtained for LB films of phthalocyaninatopolysiloxanes and some other rigid-rod polymers, where a flow-induced orientation during the transfer process was observed. [4][5][6][7][8] There are some small differences between the IR spectra of the transferred films obtained before (Figure 6, spectra A and B) and after ( Figure 6, spectra C and D) monolayer expansion. Especially in the carbonyl region differences are observed due to either the polymeric ester carbonyl vibration at 1735 cm-1 or the arachidic acid vibrations at 1715 and 1750 cm-1.…”

Section: Resultsmentioning

confidence: 99%

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Slow structural rearrangement of a side-chain phthalocyanine methacrylate polymer at the air-water interface

Nostrum¹,

Nolte²,

Devillers³

et al. 1993

Macromolecules

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A polymethacrylate with dodecoxy-substituted phthalocyanine units in the side chains has been used to form Langmuir-Blodgett monolayers at the air-water interface. The monolayers are highly crystalline. They expand slowly even when a constant surface pressure is applied. The structural change coupled with this process has been studied by electron microscopy, electron diffraction, and ellipsometry. It is proposed that the expansion is the result of a change in conformation of the peripheral alkoxy chains on the phthalocyanine rings. The polymer can be deposited on various substrates with Y-type transfer if it is mixed with arachidic acid. The resulting multilayers have been characterized by UV/vis and FT-IR spectroscopies and ellipsometry. No flow-induced orientation was observed during the transfer process.

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Section: Resultsmentioning

confidence: 99%

“…4 In a LB m ul tilayer of this polymer the molecules were shown to be oriented with the siloxane axis parallel to the substrate surface. They displayed a preference to be aligned in one direction.…”

Section: Introductionmentioning

confidence: 99%

Slow structural rearrangement of a side-chain phthalocyanine methacrylate polymer at the air-water interface

Nostrum¹,

Nolte²,

Devillers³

et al. 1993

Macromolecules

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show abstract

“…The Langmuir-Blodgett (LB) technique induces a classical anisotropy in the fi lm between out-of-plane and in-plane properties. As found, rodlike polymers, [ 12 ] rodlike polymer crystals, [ 13 ] and self-aggregated molecules [ 14 ] can be oriented during transfer, resulting in an in-plane anisotropy. Rubbing-induced alignment of segmented PPV precursors has also been used for the preparation of two-layer light-emitting diodes (LEDs) that gave high emission dichroic ratio ( DR E ) of linearly polarized electroluminescence.…”

Section: Introductionmentioning

confidence: 94%

Induced Chain Alignment of Conjugated Polymers Within Nanoporous Template

Lo¹,

Ho²,

Liao³

et al. 2011

Adv Funct Materials

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International audienceThis work presents a simple method to generate ordered conjugated polymer nanoarrays through a pore-filling process for nanoporous polymer templates so as to enhance the efficiency of photoluminescence (PL). PL results combined with the morphological evolution examined by scanning probe microscopy revealed that the enhanced PL reaches maximum intensity as the template pores are completely filled by conjugated polymers. Polarized PL spectroscopy and grazing incidence Fourier transform infrared spectroscopy were used to determine the chain orientation of templated conjugated polymer; the spectroscopic results indicate a parallel chain orientation along the cylindrical direction of nanopores. The induced alignment of the polymer chains is attributed to a nanoscale spatial effect that increases the PL intensity and the lifetime of the conjugated polymer. The enhanced luminescence of nanostructured conjugated polymers is highly promising for use in designing luminescent nanodevices

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“…Here, the absorption band at 732 cm Ϫ1 , assigned to the C-H out-of-plane bending in the phthalocyanine ring, 35 was used to investigate the stacking of phthalocyanine rings in PPc-PVDF films. Its vibration mode of the dipole moment was perpendicular to the plane of the phthalocyanine ring.…”

Section: Molecular Orientation-photosensitivity Relationshipsmentioning

confidence: 99%

Molecular orientation-photoconductivity relationship study of phthalocyanine polymer-oriented thin films

Chen

Wang

Yang

2000

J. Appl. Polym. Sci.

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The structure of langmuir–blodgett films from substituted phthalocyaninato-polysiloxanes

Cited by 113 publications

References 23 publications

Slow structural rearrangement of a side-chain phthalocyanine methacrylate polymer at the air-water interface

Slow structural rearrangement of a side-chain phthalocyanine methacrylate polymer at the air-water interface

Induced Chain Alignment of Conjugated Polymers Within Nanoporous Template

Molecular orientation-photoconductivity relationship study of phthalocyanine polymer-oriented thin films

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