Electron spin resonance and electron spin echo modulation studies of N,N,N prime ,N prime -tetramethylbenzidine photoionization adsorbed at the interface of polymeric latices

Journal Article · Thu Feb 23 00:00:00 EST 1989 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100341a074· OSTI ID:5038615

Baglioni, P; Rivara-Minten, E; Kevan, L ^[1]

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1. Univ. of Houston, TX (USA)

Electron spin resonance (ESR) and electron spin echo modulation (ESEM) of photoionized N,N,N{prime},N{prime}-tetramethylbenzidine (TMB) cation adsorbed at the interface of butadiene-acrylonitrile-methacrylic acid and butadiene-styrene-acrylic acid polymeric latices have been studied as a function of sodium dodecyl sulfate (SDS) concentration adsorbed at the latex interface. The photoionization yield of TMB in frozen latices mainly depends on the strength of TMB{sup +}-water interactions, which are enhanced by added SDS as measured by ESEM. An increase in the negative surface potential of the latex particles, due to the adsorption of SDS at the latex surface, does not affect the photoionization yield, showing that the particle surface potential has, for negatively charged systems, a secondary role in promoting the photoionization yield. Differences in the TMB{sup +} yield are found for the two polymeric latices and are attributed to the different latex compositions and/or different interfacial structures.

• OSTI ID: 5038615
• Journal Information: Journal of Physical Chemistry; (USA), Vol. 93:4; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ACRYLIC ACID
CATALYTIC EFFECTS
ACRYLONITRILE
BENZIDINE
PHOTOIONIZATION
BUTADIENE
DEUTERIUM COMPOUNDS
METHACRYLIC ACID
STYRENE
ACOUSTIC ESR
ADSORPTION
CATALYSIS
CATALYSTS
CATIONS
ELECTRON SPIN RESONANCE
EXPERIMENTAL DATA
POLYMERS
ALKYLATED AROMATICS
AMINES
AROMATICS
CARBOXYLIC ACIDS
CHARGED PARTICLES
DATA
DIENES
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
IONIZATION
IONS
MAGNETIC RESONANCE
MONOCARBOXYLIC ACIDS
NITRILES
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
POLYENES
RESONANCE
SORPTION
400500* - Photochemistry