Photoinduced electron transfer from N-alkylphenothiazines to interface water of sodium dodecyl sulfate micelles as a function of poly(ethylene oxide) interaction with the interface
- Univ. of Houston, TX (United States)
Photoinduced electron transfer from N-alkylphenothiazines (PC[sub n], n = 1, 3, 6, 12, and 16) solubilized in sodium dodecyl sulfate (SDS) micelle interacting with poly(ethylene oxide) (PEO) to interface D[sub 2]O as an electron acceptor is studied with electron spin resonance (ESR) and electron spin echo modulation. The photoproduced radicals are identified as the N-alkylphenothiazine cation radical and the surfactant alkyl chain radical of SDS. The total photoyield decreased from PC[sub 1] to PC[sub 3] and then increased to PC[sub 16]. The photoyields increased monotonically with increasing PEO concentration. The photoyields are correlated with the deuterium modulation depth of PC[sub n][sup +] with D[sub 2]O at the micelle interface as a function of the alkyl chain length of PC[sub n] and the concentration of PEO since the modulation depth measures relative changes in the interaction distance between the phenothiazine moiety and interface D[sub 2]O. The photoyield and deuterium modulation depth trends show a good correlation. 36 refs., 6 figs.
- OSTI ID:
- 7165950
- Journal Information:
- Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 98:9; ISSN JPCHAX; ISSN 0022-3654
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400102 -- Chemical & Spectral Procedures
400201* -- Chemical & Physicochemical Properties
400500 -- Photochemistry
ALCOHOLS
AQUEOUS SOLUTIONS
AZINES
CHEMISTRY
DISPERSIONS
ELECTRON SPIN RESONANCE
ELECTRON TRANSFER
GLYCOLS
HEAVY WATER
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MAGNETIC RESONANCE
MICELLAR SYSTEMS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PHENOTHIAZINES
PHOTOCHEMISTRY
POLYETHYLENE GLYCOLS
POLYMERS
RADICALS
RESONANCE
SOLUTIONS
SURFACTANTS
WATER