Polymerization of mono- and multilayer forming diacetylenes

Tieke, Bernd; Graf, Hagen; Wegner, Gerhard; Naegele, B.; Ringsdorf, Helmut; Banerjie, A.; Day, David R.; Lando, J. B.

doi:10.1007/bf01549738

Cited by 128 publications

(46 citation statements)

References 16 publications

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“…[3][4][5][6][7][8][9][10]. This order agrees with the order of the melting points, corresponding to the increasing difficulty of tight packing of the head groups, thus disturbing the packing of the chains and lowering T G .…”

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confidence: 71%

Polymerization of hydrocarbon and fluorocarbon amphiphiles in Langmuir-Blodgett multilayers

1985

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supporting

confidence: 71%

Polymerization of hydrocarbon and fluorocarbon amphiphiles in Langmuir-Blodgett multilayers

1985

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“…The first technique requires specially designed amphiphilic molecules with long aliphatic chains and polar groups assuring them a good stability on water subphase. It works with some polydiacetylenes [7] giving polycrystalline thin films with polymer chains parallel to the substrate plane [8]. A recent paper of Tomioka et al [9] reports a method of preparation of highly oriented Langmuir-Blodgett monolayers using a polydiacety]ene with urethane side-groups.…”

Section: Oriented Thin Film Preparation Techniquesmentioning

confidence: 99%

“…With KBr single crystal substrate and DCH molecule it was possible to obtain a bi-orientation [6] with polymer chains (after thermal polymerization of deposited monomer thin film) mutually perpendicular and parallel to the cubic edges of KBr. With the choice of KAP single crystal substrate a mono-orientation of polymer chains was obtained [7]. For phthalate acid with other alkali ions like Rb single crystals the technique leads to an orientation distribution of polymer chains [7].…”

Section: Oriented Thin Film Preparation Techniquesmentioning

confidence: 99%

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Oriented Thin Films for Nonlinear Optics

et al. 1995

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Nonlinear optical dichroism technique is shown to be an useful tool for the 1D conjugated polymer chain orientation study. When done as a function of rotation angle it gives the order parameters. These parameters can be also obtained by coupling this technique with linear dichroism method. The technique is illustrated by third harmonic generation on epitaxied polydiacetylene thin films either on single-crystalline or on preoriented ultrathin films by rubbing. Whereas an almost perfect orientation is obtained in the case of epitaxy of p-DCH, poly [1,6-bis(N-carbazolyl)-2,4-hexadiyne], on KAP, potassium acid phthalate, single crystal, this is smaller for epitaxy on preoriented substrate. The results are correlated with thin film texture measurements with X-rays. A good overall agreement is seen except that X-ray data show better order than nonlinear optical dichroism. A possible origin of this difference is shortly discussed.

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“…1). Amphiphilic diacetylene lipids have been polymerized to form single crystals, 4,5 Langmuir-Blodgett films, 3,[6][7][8] self-assembled monolayers, 9 and vesicles [10][11][12][13] and ribbons 14,15 in aqueous solution. Recently, immobilization of disulfide-modified PDA vesicles on gold surfaces 16 and amine-terminated vesicles on aldehyde-functionalized glass slides 17 were reported.…”

Section: Introductionmentioning

confidence: 99%

Functional Self-Assembling Bolaamphiphilic Polydiacetylenes as Colorimetric Sensor Scaffolds

2004

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ABSTRACT. Conjugated polymers capable of responding to external stimuli by changes in optical, electrical or electrochemical properties can be used for the construction of direct sensing devices.Polydiacetylene-based systems are attractive for sensing applications due to their colorimetric response to changes in the local environment. Here we present the design, preparation and characterization of self-assembling functional bolaamphiphilic polydiacetylenes (BPDAs) inspired by Nature's strategy for membrane stabilization. We show that by placing polar headgroups on both ends of the diacetylene lipids in a transmembranic fashion, and altering the chemical nature of the polar surface residues, the conjugated polymers can be engineered to display a range of radiation-, thermaland pH-induced colorimetric responses. We observed dramatic nanoscopic morphological 2 transformations accompanying charge-induced chromatic transitions, suggesting that both side chain disordering and main chain rearrangement play important roles in altering the effective conjugation lengths of the poly(ene-yne). These results establish the foundation for further development of BPDAbased colorimetric sensors. Introduction:

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Polymerization of mono- and multilayer forming diacetylenes

Cited by 128 publications

References 16 publications

Polymerization of hydrocarbon and fluorocarbon amphiphiles in Langmuir-Blodgett multilayers

Polymerization of hydrocarbon and fluorocarbon amphiphiles in Langmuir-Blodgett multilayers

Oriented Thin Films for Nonlinear Optics

Functional Self-Assembling Bolaamphiphilic Polydiacetylenes as Colorimetric Sensor Scaffolds

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