Ground and excited state chemistry of some hydrophilic thiazine dyes for possible photogalvanic applications
Abstract
The research was designed to study the ground and excited state properties of hydrophilic analogues of the thiazine dye, thionine. The analogues were prepared by substituting ..beta..-hydroxyethyl or N-methylpiperazine groups onto the thiazine chromophore. Positive charges were introduced into the analogues containing the N-methylpiperazine groups by methylation of the N-methyl nitrogen atom of the piperazine ring. After purification and characterization of the analogues, ground state properties such as water solubility and aggregation were studied. Excited state studies involved determination of triplet state lifetimes (tau), and triplet state rate constants for, self quenching, (k/sub SQ/), ferrous quenching (k/sub Q/), and bromide and iodide (k/sub Br/ and K/sub I/) quenching. Oxidation and decay of the photoproducts, semireduced dyes and leuco dyes, was also studied.
- Authors:
- Publication Date:
- Research Org.:
- University of Southern Mississippi, Hattiesburg (USA)
- OSTI Identifier:
- 5265538
- Report Number(s):
- DOE/ER/10534-T2
ON: DE84009096
- DOE Contract Number:
- FG02-79ER10534
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: Thesis
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; PHOTOGALVANIC CELLS; DYES; THIONINE; EXCITED STATES; GROUND STATES; ABSORPTION SPECTRA; AGGLOMERATION; LIFETIME; PHOTOLYSIS; QUENCHING; SOLUBILITY; AMINES; CHEMICAL REACTIONS; DECOMPOSITION; ELECTROCHEMICAL CELLS; ENERGY LEVELS; EQUIPMENT; HETEROCYCLIC COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANIC SULFUR COMPOUNDS; PHOTOCHEMICAL REACTIONS; PHOTOELECTROCHEMICAL CELLS; SOLAR EQUIPMENT; SPECTRA; 140505* - Solar Energy Conversion- Photochemical, Photobiological, & Thermochemical Conversion- (1980-)
Citation Formats
Burton, W C. Ground and excited state chemistry of some hydrophilic thiazine dyes for possible photogalvanic applications. United States: N. p., 1982.
Web.
Burton, W C. Ground and excited state chemistry of some hydrophilic thiazine dyes for possible photogalvanic applications. United States.
Burton, W C. 1982.
"Ground and excited state chemistry of some hydrophilic thiazine dyes for possible photogalvanic applications". United States.
@article{osti_5265538,
title = {Ground and excited state chemistry of some hydrophilic thiazine dyes for possible photogalvanic applications},
author = {Burton, W C},
abstractNote = {The research was designed to study the ground and excited state properties of hydrophilic analogues of the thiazine dye, thionine. The analogues were prepared by substituting ..beta..-hydroxyethyl or N-methylpiperazine groups onto the thiazine chromophore. Positive charges were introduced into the analogues containing the N-methylpiperazine groups by methylation of the N-methyl nitrogen atom of the piperazine ring. After purification and characterization of the analogues, ground state properties such as water solubility and aggregation were studied. Excited state studies involved determination of triplet state lifetimes (tau), and triplet state rate constants for, self quenching, (k/sub SQ/), ferrous quenching (k/sub Q/), and bromide and iodide (k/sub Br/ and K/sub I/) quenching. Oxidation and decay of the photoproducts, semireduced dyes and leuco dyes, was also studied.},
doi = {},
url = {https://www.osti.gov/biblio/5265538},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Aug 01 00:00:00 EDT 1982},
month = {Sun Aug 01 00:00:00 EDT 1982}
}