A novel method for the preparation of polymethacrylates with nonlinear optically active side groups

Müller, H.; Nuyken, Oskar; Strohriegl, Peter

doi:10.1002/marc.1992.030130209

Cited by 18 publications

(6 citation statements)

References 21 publications

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“…When compared to the copolymethacrylates with DANS as chromophore, these molecules demonstrated electro-optic effects up to three times the values obtained with DANS as chromophore. Müller et al 52) and Wong et al 53) also synthesized chromophore functionalized polymethacrylates but no second-order properties were measured. Fluorinated NLO-copolymethacrylates were synthesized by Mc.…”

Section: Polymethacrylatesmentioning

confidence: 99%

Second-order non-linear optical polymers

Samyn

Verbiest

Persoons

2000

Macromol. Rapid Commun.

122

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In this article we discuss the state of the art in the field of second‐order non‐linear optical polymers. More specifically, we highlight those results that we think made an important contribution to the field, combined with some of our own results. We start with a general overview of all the aspects involved in characterizing second‐order non‐linear optical polymers, from thin film formation and poling to second‐harmonic generation and electro‐optic measurements on such systems. Next, we review the second‐order non‐linear optical properties of selected polymer systems such as poly(vinyl ether)s, polystyrenes, polymethacrylates, main‐chain polymers and high Tg polymers like polyimides and polymaleimides. Finally, we discuss some new polymer systems that might become important in the field of non‐linear optics in the near future.

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Section: Polymethacrylatesmentioning

confidence: 99%

Second-order non-linear optical polymers

Samyn

Verbiest

Persoons

2000

Macromol. Rapid Commun.

122

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“…Core−shell systems represent interesting structures with preparative and theoretical research relevance. Topics such as electrostatic interactions between highly charged colloids, polyelectrolytes on surfaces, and chemical modifications in already structured arrays of monodisperse spheres are exciting and interesting fields of colloidal research. − …”

Section: Introductionmentioning

confidence: 99%

Tuning the Properties of Photonic Films from Polymer Beads by Chemistry

Egen

Zentel

2002

Chem. Mater.

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This paper describes the preparation of monodisperse colloids from various methacrylates. These colloids sediment well on glass slides and formsin the dried stateslarge threedimensional face-centered cubic photonic crystal films with Bragg reflection in the visible region. Depending on crystallization conditions, the domain sizes vary between 50 and 300 µm. By cross-linking the polymer within the colloids, it is possible to increase the thermal stability of the polymeric photonic structure tremendously (up to 1 h at 200 °C). These photonic structures soften above T g (rubbery photonic structure), but they cannot fuse. Crosslinked colloids from poly(tert-butyl methacrylate) can either thermally or chemically be modified. During thermal treatment (above 200 °C) the colloids shrink, as isobutene is split off. This allows a change of the lattice constant and the reflection color of an already crystallized dry photonic film. The acid-catalyzed cleavage of the ester bond allows the conversion of existing photonic structures into photonic crystals from core-shell colloids with hydrophilic polyelectrolytes in the shell.

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“…The polymer analogous reaction was carried out to produce a novel photorefractive polymer with HE‐PDCST 2 as the NLO and the carbazole derivative 3 as photoconductive moieties according to the literature 13, 14. To a solution of HE‐PDCST 2 (1.0 g, 3.55 mmol) and 6‐(9H‐carbazol‐9‐yl)hexan‐1‐ol 3 (0.95 g, 3.55 mmol) in pyridine (15 mL) was added poly(methacryloyl chloride) 4 (0.682 g, 6.52 mmol) dissolved in pyridine (20 mL) and the mixture was stirred at 100 °C.…”

Section: Methodsmentioning

confidence: 99%

Photorefractive Composite Based on a Monolithic Polymer

Giang

Kinashi

Sakai

et al. 2012

Macro Chemistry & Physics

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A new class of photorefractive (PR) composite based on a fully functionalized polymer with high phase-stability is reported. The polymer containing non-linear optical (NLO) chromophores and charge-transporting carbazole moieties is synthesized by a polymer-analogous reaction. The polymer is doped with plasticizer, NLO dye, and sensitizer to fabricate the PR composite. The NLO dye is the same as the NLO chromophore moiety in the polymer side chain. The PR performance of the composite is evaluated by degenerated four-wave mixing and two-beam coupling measurements. A diffraction effi ciency of 30% at a relatively low applied electric fi eld of 45 V μ m − 1 is achieved. Despite a high concentration of NLO dye, the composites show good stability for a long period without phase separation.displays. The holograph can be recorded in a polymeric photorefractive device by two coherent laser beams, one is the object beam and the other is the reference beam and then read out by a probe beam to reproduce the holographic image. The ability to continuously record and read the hologram imparts photorefractive materials with the potential to be used in 3D communication.Required elements in photorefractive materials are charge photogeneration, a charge transporting medium, trapping sites, and non-linear optical (NLO) molecules. With a polymer, these functional properties can be combined into one material as a composite or a monolithic polymer which means a fully functionalized polymer. A typical photorefractive composite consists of a photoconductive polymer, a NLO dye, plasticizer, and sensitizer. The sensitizer is used to assist the charge photogeneration. The plasticizer is added to lower the glass transition temperature ( T g ). The primary role of the NLO dye is to provide a refractive index change in response to electric fi eld through Pockels effect. [ 2 ] The concentration of the NLO dye must be high to maximize the refractive index modulation. However, a high concentration of the highly polar NLO dye tends to induce phase separation in the relatively non-polar photoconductive polymer. In Macromol. Chem. Phys. 2012, 213, 982−988

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A novel method for the preparation of polymethacrylates with nonlinear optically active side groups

Cited by 18 publications

References 21 publications

Second-order non-linear optical polymers

Second-order non-linear optical polymers

Tuning the Properties of Photonic Films from Polymer Beads by Chemistry

Photorefractive Composite Based on a Monolithic Polymer

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