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Showing 13 to 24 of 228 entries
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Surface and interfacial segregation in blends of polystyrene with functional end groups and deuterated polystyrene.

Langmuir : the ACS journal of surfaces and colloids

Kawaguchi D, Tanaka K, Torikai N, Takahara A, Kajiyama T.
PMID: 17503863
Langmuir. 2007 Jun 19;23(13):7269-75. doi: 10.1021/la700418j. Epub 2007 May 16.

The effect of chain-end chemistry on surface and interfacial segregation in symmetric blends of polystyrene (hPS)/deuterated polystyrene (dPS) has been investigated by X-ray photoelectron and secondary ion mass spectroscopy in conjunction with neutron reflectivity measurements. Alpha,omega-fluoroalkyl- and alpha,omega-carboxy-terminated polystyrenes...

MALDI-TOF imaging mass spectrometry of artifacts in "dried droplet" polymer samples.

Analytical and bioanalytical chemistry

Weidner S, Knappe P, Panne U.
PMID: 21336787
Anal Bioanal Chem. 2011 Jul;401(1):127-34. doi: 10.1007/s00216-011-4773-1. Epub 2011 Feb 19.

Matrix-assisted laser desorption/ionization-time-of-flight (MALDI-TOF) imaging of polystyrenes with various molecular masses was applied to study spatial molecular mass distribution of polymers in sample spots prepared by the "dried droplet" method. When different solvents and target surfaces were examined, a...

Plasma polymerization of aniline on different surface functionalized substrates.

Journal of colloid and interface science

Wang J, Neoh KG, Zhao L, Kang ET.
PMID: 16290721
J Colloid Interface Sci. 2002 Jul 01;251(1):214-24. doi: 10.1006/jcis.2002.8389.

The plasma polymerization of aniline on different surface functionlized low-density polyethylene (LDPE) substrates was investigated, and the resulting polymer was characterized by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, and atomic force microscopy. The results showed...

Organoboronium-functionalized polystyrenes as a new class of polycations.

Chemical communications (Cambridge, England)

Cui C, Jäkle F.
PMID: 19532941
Chem Commun (Camb). 2009 May 21;(19):2744-6. doi: 10.1039/b902644d. Epub 2009 Mar 20.

The facile preparation of organoboronium polymers via spontaneous reaction of bromoborylated polystyrene with 2,2'-bipyridine is reported; these novel polycations represent an interesting alternative to commonly used ammonium-based polycations.

Experimental and theoretical studies of scaling of sizes and intrinsic viscosity of hyperbranched chains in good solvents.

The Journal of chemical physics

Li L, Lu Y, An L, Wu C.
PMID: 23534663
J Chem Phys. 2013 Mar 21;138(11):114908. doi: 10.1063/1.4795577.

Using a set of hyperbranched polystyrenes with different overall molar masses but a uniform subchain length or a similar overall molar mass but different subchain lengths, we studied their sizes and hydrodynamic behaviors in toluene (a good solvent) at...

AF4/MALS/QELS/DRI characterization of regular star polymers and their "span analogs".

The Analyst

Pitkänen L, Striegel AM.
PMID: 25221791
Analyst. 2014 Nov 21;139(22):5843-51. doi: 10.1039/c4an01105h.

Asymmetric flow field-flow fractionation (AF4) coupled with multi-angle static and quasi-elastic light scattering and differential refractive index detectors, was employed for the separation and characterization of regular star-shaped polystyrenes and their linear and span analogs in tetrahydrofuran. Stars with...

Ultrathin ammonium heptamolybdate films as efficient room-temperature hole transport layers for organic solar cells.

ACS applied materials & interfaces

Qiu W, Hadipour A, Müller R, Conings B, Boyen HG, Heremans P, Froyen L.
PMID: 25167921
ACS Appl Mater Interfaces. 2014 Sep 24;6(18):16335-43. doi: 10.1021/am504606u. Epub 2014 Sep 09.

Ammonium heptamolybdate (NH4)6Mo7O24·4H2O (AHM) and its peroxo derivatives are analyzed as solution-processed room temperature hole transport layer (HTL) in organic solar cells. Such AHM based HTLs are investigated in devices with three different types of active layers, i.e., solution-processed...

One-Step Synthesis of Dendritic Highly Branched Polystyrenes by Organotellurium-Mediated Copolymerization of Styrene and a Dienyl Telluride Monomer.

Angewandte Chemie (International ed. in English)

Lu Y, Yamago S.
PMID: 30697891
Angew Chem Int Ed Engl. 2019 Mar 18;58(12):3952-3956. doi: 10.1002/anie.201814566. Epub 2019 Feb 14.

Dendritic highly branched polystyrenes (HB-PSts) were prepared by a one-step copolymerization of dienyl telluride 6 and St in the presence of organotellurium chain transfer agent 2. The molecular weight (MW), dendritic generation, and branching density were easily controlled by...

Plexcitons: The Role of Oscillator Strengths and Spectral Widths in Determining Strong Coupling.

ACS nano

Thomas R, Thomas A, Pullanchery S, Joseph L, Somasundaran SM, Swathi RS, Gray SK, Thomas KG.
PMID: 29261287
ACS Nano. 2018 Jan 23;12(1):402-415. doi: 10.1021/acsnano.7b06589. Epub 2018 Jan 05.

Strong coupling interactions between plasmon and exciton-based excitations have been proposed to be useful in the design of optoelectronic systems. However, the role of various optical parameters dictating the plasmon-exciton (plexciton) interactions is less understood. Herein, we propose an...

PEDOT(PSS) as Solid Contact for Ion-Selective Electrodes: The Influence of the PEDOT(PSS) Film Thickness on the Equilibration Times.

Analytical chemistry

Guzinski M, Jarvis JM, Perez F, Pendley BD, Lindner E, De Marco R, Crespo GA, Acres RG, Walker R, Bishop J.
PMID: 28194968
Anal Chem. 2017 Mar 21;89(6):3508-3516. doi: 10.1021/acs.analchem.6b04625. Epub 2017 Feb 27.

To understand the rate determining processes during the equilibration of poly(3,4-ethylenedioxythiophene):polystyrenesulfonate-based (PEDOT(PSS)-based) solid contact (SC) ion-selective electrodes (ISEs), the surfaces of Pt, Au, and GC electrodes were coated with 0.1, 1.0, 2.0, and 4.0 μm thick galvanostatically deposited PEDOT(PSS)...

Colorimetric Ion Sensors Based on Polystyrenes Bearing Side Chain Triazole and Donor-Acceptor Chromophores.

Analytical sciences : the international journal of the Japan Society for Analytical Chemistry

Li Y, Washino Y, Hyakutake T, Michinobu T.
PMID: 28496064
Anal Sci. 2017;33(5):599-604. doi: 10.2116/analsci.33.599.

Side chain clicked polystyrene derivatives formed by the Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction showed colorimetric ion sensing behaviors when donor-acceptor chromophores, prepared by a [2+2] cylcoladdition-retroelectrocyclization between electron-rich alkynes and tetracyanoethylene (TCNE)/7,7,8,8-tetracyanoquinodimethane (TCNQ), were attached to the triazole rings....

Inverted Quantum-Dot Light Emitting Diode Using Solution Processed p-Type WOx Doped PEDOT:PSS and Li Doped ZnO Charge Generation Layer.

ACS applied materials & interfaces

Kim HM, Kim J, Lee J, Jang J.
PMID: 26492573
ACS Appl Mater Interfaces. 2015 Nov 11;7(44):24592-600. doi: 10.1021/acsami.5b06505. Epub 2015 Nov 02.

UNLABELLED: Quantum dots (QDs) are a promising material for emissive display with low-cost manufacturing and excellent color purity. In this study, we report colloidal quantum-dot light emitting diodes (QLEDs) with an inverted architecture with a solution processed charge generation...

Showing 13 to 24 of 228 entries