Matches in SemOpenAlex for { <https://semopenalex.org/work/W2050041623> ?p ?o ?g. }
Showing items 1 to 80 of
80
with 100 items per page.
- W2050041623 endingPage "63" @default.
- W2050041623 startingPage "43" @default.
- W2050041623 abstract "Abstract— Flash photolysis of chlorophyll a alone in CBE (cyclohexanol-t-butanol-ethanol) yields a difference spectrum similar to those obtained upon steady illumination of chlorophyll a-quinone mixtures in this solvent. Decay kinetics in CBE and dimethylsulfoxide are faster at the Soret band than at 460–580 nm and red band regions. This difference is not obtained in other solvents (CHCI3, CCI4, t-butanol, ethanol), implying that two or more species are obtained in CBE and DMSO. β-Carotene in CBE increases the rate of decay of the flash-induced chlorophyll transients at 430 and 660 nm but only decreases the magnitude of the signal at 470 nm. This implies that the 470 nm absorbance is due to a product formed from the triplet state. This effect is not observed in ethanol. Adding quinone to chlorophyll solutions results in slowly decaying species being generated by flash excitation in CBE. Three components can be distinguished: the first (t1/2˜ 0.2 msec) corresponds to the triplet state; the second (t1/2= 5–10 msec) is quinone concentration and species independent; the third (t1/2= several seconds) is dependent upon quinone concentration and species (rate is faster for higher concentrations and lower potential quinones). The ESR signal decay rate is approximately equal to the third component flash decay rate when the chlorophyll and quinone concentrations are equal. With excess quinone, the flash decay rate becomes faster, and the ESR decay rate decreases slightly. These slowly-decaying species are not produced when quinone is added to chlorophyll a in ethanol or t-butanol, or to pheophytin in CBE. One observes merely a decrease in signal height with no accompanying increase in decay rate. Mechanisms to account for all of these phenomena are presented which involve an initial chlorophyll triplet-solvent reaction with the subsequent formation of several species of chloro-phyll-quinone radical complexes." @default.
- W2050041623 created "2016-06-24" @default.
- W2050041623 creator A5012627839 @default.
- W2050041623 creator A5046075419 @default.
- W2050041623 date "1971-07-01" @default.
- W2050041623 modified "2023-09-26" @default.
- W2050041623 title "CHLOROPHYLL ONE-ELECTRON PHOTOCHEMISTRY: FLASH PHOTOLYSIS STUDIES OF THE CHLOROPHYLL-QUINONE REACTION IN ALCOHOL SOLVENTS" @default.
- W2050041623 cites W1981571380 @default.
- W2050041623 cites W2005352066 @default.
- W2050041623 cites W2005470572 @default.
- W2050041623 cites W2018310923 @default.
- W2050041623 cites W2030143104 @default.
- W2050041623 cites W2057932785 @default.
- W2050041623 cites W2062366873 @default.
- W2050041623 cites W2091144014 @default.
- W2050041623 cites W2329458168 @default.
- W2050041623 doi "https://doi.org/10.1111/j.1751-1097.1971.tb06152.x" @default.
- W2050041623 hasPublicationYear "1971" @default.
- W2050041623 type Work @default.
- W2050041623 sameAs 2050041623 @default.
- W2050041623 citedByCount "7" @default.
- W2050041623 countsByYear W20500416232014 @default.
- W2050041623 crossrefType "journal-article" @default.
- W2050041623 hasAuthorship W2050041623A5012627839 @default.
- W2050041623 hasAuthorship W2050041623A5046075419 @default.
- W2050041623 hasBestOaLocation W20500416232 @default.
- W2050041623 hasConcept C113196181 @default.
- W2050041623 hasConcept C121332964 @default.
- W2050041623 hasConcept C13472781 @default.
- W2050041623 hasConcept C148898269 @default.
- W2050041623 hasConcept C178790620 @default.
- W2050041623 hasConcept C185592680 @default.
- W2050041623 hasConcept C2776373379 @default.
- W2050041623 hasConcept C2778902199 @default.
- W2050041623 hasConcept C2780643102 @default.
- W2050041623 hasConcept C32909587 @default.
- W2050041623 hasConcept C55493867 @default.
- W2050041623 hasConcept C62520636 @default.
- W2050041623 hasConcept C71240020 @default.
- W2050041623 hasConcept C75473681 @default.
- W2050041623 hasConcept C76766466 @default.
- W2050041623 hasConcept C93391505 @default.
- W2050041623 hasConceptScore W2050041623C113196181 @default.
- W2050041623 hasConceptScore W2050041623C121332964 @default.
- W2050041623 hasConceptScore W2050041623C13472781 @default.
- W2050041623 hasConceptScore W2050041623C148898269 @default.
- W2050041623 hasConceptScore W2050041623C178790620 @default.
- W2050041623 hasConceptScore W2050041623C185592680 @default.
- W2050041623 hasConceptScore W2050041623C2776373379 @default.
- W2050041623 hasConceptScore W2050041623C2778902199 @default.
- W2050041623 hasConceptScore W2050041623C2780643102 @default.
- W2050041623 hasConceptScore W2050041623C32909587 @default.
- W2050041623 hasConceptScore W2050041623C55493867 @default.
- W2050041623 hasConceptScore W2050041623C62520636 @default.
- W2050041623 hasConceptScore W2050041623C71240020 @default.
- W2050041623 hasConceptScore W2050041623C75473681 @default.
- W2050041623 hasConceptScore W2050041623C76766466 @default.
- W2050041623 hasConceptScore W2050041623C93391505 @default.
- W2050041623 hasIssue "1" @default.
- W2050041623 hasLocation W20500416231 @default.
- W2050041623 hasLocation W20500416232 @default.
- W2050041623 hasOpenAccess W2050041623 @default.
- W2050041623 hasPrimaryLocation W20500416231 @default.
- W2050041623 hasRelatedWork W2030143104 @default.
- W2050041623 hasRelatedWork W2053772394 @default.
- W2050041623 hasRelatedWork W2062376211 @default.
- W2050041623 hasRelatedWork W2076600698 @default.
- W2050041623 hasRelatedWork W2149481483 @default.
- W2050041623 hasRelatedWork W2167189296 @default.
- W2050041623 hasRelatedWork W2213501915 @default.
- W2050041623 hasRelatedWork W2401015842 @default.
- W2050041623 hasRelatedWork W2409928440 @default.
- W2050041623 hasRelatedWork W2181994406 @default.
- W2050041623 hasVolume "14" @default.
- W2050041623 isParatext "false" @default.
- W2050041623 isRetracted "false" @default.
- W2050041623 magId "2050041623" @default.
- W2050041623 workType "article" @default.