Luminescent phosphonium polyelectrolyte prepared from a diphosphine chromophore: synthesis, photophysics, and layer-by-layer assembly

Tennyson, Eleanor G.; He, Susan; Osti, Naresh C.; Perahia, Dvora; Smith, Rhett C.

doi:10.1039/c0jm01430c

Cited by 25 publications

(36 citation statements)

References 42 publications

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“…The Smith group has reported phosphonium‐bearing materials (Scheme , P1 and P2 ) derived from a visible absorbing/emitting diphosphine . These phosphonium polyelectrolytes were the first to be investigated for the supramolecular assembly of highly ordered, optically active films via the layer‐by‐layer (LbL) assembly process .…”

Section: Introductionmentioning

confidence: 58%

Phosphonium polyelectrolytes: influence of diphosphine spacer on layer‐by‐layer assembly with anionic conjugated polymers

Conrad

Bedford

Buelt

et al. 2015

Polymer International

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Three phosphonium polyelectrolytes have been prepared wherein the flexibility of the spacer between charge‐bearing phosphonium units was varied from 1,2‐ethyl to 1,4‐phenyl to 1,1′‐ferrocenyl. The influence of inter‐phosphonium spacer flexibility on the ability of the polyelectrolyte to form ordered films via layer‐by‐layer supramolecular assembly with anionic polythiophene and anionic poly(p‐phenylenevinylene) derivatives was also assessed through a combination of UV−visible spectroscopy and atomic force microscopy. The more flexible ionic polymers were found to be capable of forming thicker films and to maintain growth linearity up to at least 800 bilayers in some cases. © 2015 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 58%

Phosphonium polyelectrolytes: influence of diphosphine spacer on layer‐by‐layer assembly with anionic conjugated polymers

Conrad

Bedford

Buelt

et al. 2015

Polymer International

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“…Amorphous poly[2‐methoxy‐5‐(2′‐ethyl‐hexyloxy)‐1,4‐phenylene vinylene] (MEH‐PPV) (Figure ) is a prototypical example of such a soluble polymer that is also an excellent red light emitting material, with an electronic bandgap that can be tuned by means of either chemical substitution or mixing for practical applications. As in other π‐conjugated polymers and polyelectrolytes, long‐range charge transport in MEH‐PPV is enabled by the delocalization of π‐electrons capable of moving over several monomer units along the main carbon chains (∼5–10 monomers), making it a useful semiconducting material. The extent of delocalization of the π‐electrons, referred to as conjugation length, determines the energy gap, which sets the optical and electrical properties of the materials, and ultimately determines the performance of derived devices.…”

Section: Introductionmentioning

confidence: 99%

Side chain dynamics in semiconducting polymer MEH‐PPV

Osti

Mamontov

Daemen

et al. 2018

J of Applied Polymer Sci

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The characteristic nanoscale dynamics of the alkyl side groups in the light‐emitting polymer poly[2‐methoxy‐5‐(2′‐ethyl‐hexyloxy)‐1,4‐phenylene vinylene] have been investigated using quasi‐elastic neutron scattering (QENS). The measurements were taken below the polymer's glass transition (T ≤ Tg ≃ 353 K), where the main backbone is in a rigid state and does not contribute to the broadening of the QENS signal. An analytical diffusion model consisting of a static term and two dynamical components, characterizing the flexible side groups, provide an excellent fit to the experimental data. The two observed dynamical processes are all localized in character, with no meaningful dependence on temperature. The faster process, with characteristic timescale of ∼18 ps at room temperature (RT), can be linked to the average mobility of the terminal protons of the alkyl chain, while the slower process, with characteristic timescale of ∼170 ps at RT, to those protons at the other end of the alkyl chain, closest to the backbone. While the fraction of mobile protons contributing to the QENS signal increases with increasing temperature, the characteristic timescale and confining volume within which the protons are able to move locally depend chiefly on the polymer conformational state. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47394.

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“…These polyelectrolytes possess basic or acid groups covalently bonded in their structures and are able to reduce metallic ions and stabilize metallic nanoparticles . The basic polyelectrolytes generally have in their structures amino, phosphonium, sulfonium, boronium, imidazolium, or pyridinium groups. The acid polyelectrolytes have carboxylate, sulfate, sulfonate, phosphonate, or arsonate groups.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and stabilization of Au nanoparticles in colloidal solution using macroelectrolytes with sulfonic acid groups

Herrera‐González

Garcı́a-Serrano

Caldera‐Villalobos

2017

J of Applied Polymer Sci

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Metal nanoparticles are obtained by different chemical reactions using reducing agents that are not environmentally friendly. This work report the synthesis of Au nanoparticles in colloidal solution using three monodisperse macroelectrolytes, with peripheral sulfonic acid groups bonded covalently, without toxic reducing agents. During the synthesis of Au nanoparticles were used the new macroelectrolytes as reducing and stabilizing agents in aqueous solution or ethylene glycol. The macroelectrolytes were synthesized using hexachlorocyclotriphosphazene as core, and o‐ or p‐aminobenzenesulfonic acid, obtaining acid macroelectrolytes with two and six sulfonic acid groups in ortho‐ position, and four sulfonic acid groups in para‐ position. The ultraviolet–visible (UV–vis) absorption spectroscopy and transmission electron microscopy study show that the macroelectrolytes with sulfonic acid groups in ortho‐ position are reducing agents for Au+++ ions in colloidal solution and produced Au nanoparticles with anisotropic shapes, such as decahedrons and prisms. The macroelectrolyte with sulfonic acid groups in para‐ position is reducing agent for Au+++ and produces quasispherical Au nanoparticles with sizes between 8 and 40 nm. The colloidal solutions with Au nanoparticles were stable by several months due to the protection of imine and sulfonic groups of macroelectrolytes on the Au nanoparticles. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45888.

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Luminescent phosphonium polyelectrolyte prepared from a diphosphine chromophore: synthesis, photophysics, and layer-by-layer assembly

Cited by 25 publications

References 42 publications

Phosphonium polyelectrolytes: influence of diphosphine spacer on layer‐by‐layer assembly with anionic conjugated polymers

Phosphonium polyelectrolytes: influence of diphosphine spacer on layer‐by‐layer assembly with anionic conjugated polymers

Side chain dynamics in semiconducting polymer MEH‐PPV

Synthesis and stabilization of Au nanoparticles in colloidal solution using macroelectrolytes with sulfonic acid groups

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