Zobrazeno 1 - 10
of 290
pro vyhledávání: '"77"'
Publikováno v:
The Journal of Physical Chemistry. 97:9852-9862
At both room temperature (RT) and 77 K, the absorption and fluorescence spectra of the three individual chromophore types ([alpha][sub 84], [beta][sub 84], and [beta][sub 155]) found in monomeric C-phycocyanin ([alpha][sup PC][beta][sup PC]), isolate
Publikováno v:
The Journal of Physical Chemistry. 100:627-632
Nanosecond laser photolysis studies of chloropyridinato- and chloroaquachromium(III) tetraphenylporphyrin, ClCrIIITPP(Py) and ClCrIIITPP(H2O), dissolved in polystyrene films have been carried out in the temperature range 77−300 K. The transient obs
Publikováno v:
The Journal of Physical Chemistry. 100:4848-4852
Photoinduced isomerization of alkyl radicals of n-alkanes trapped in 77 K solids was examined by the ESR method. In crystalline n-alkanes, penultimate radicals (CH3ĊHCH2−) and interior radicals (−CH2ĊHCH2−) are converted to primary radicals (
Autor:
Ivo H. M. van Stokkum, Marie Louise Groot, Jan P. Dekker, H. Matthieu Visser, Frank van Mourik, Rienk van Grondelle
Publikováno v:
The Journal of Physical Chemistry. 99:15304-15309
To further characterize the processes of charge separation and excitation energy transfer in the isolated photosystem II reaction center complex (the D1-D2-cytochrome b-559 complex), subpicosecond absorption difference spectra were measured at 77 K.
Publikováno v:
The Journal of Physical Chemistry. 98:1044-1048
Photoinduced electron transfer from (alkoxyphenyl)triphenylporphyrins (C[sub n]OPTPP) to the interface water of anionic aerosol dioctyl- (AOT) and cationic cetytrimethylammonium bromide/alcohol (CTAB/ROH) reverse micelles at 77 K produces paramagneti
Publikováno v:
The Journal of Physical Chemistry. 97:3680-3684
In solvents with an oxygen atom such as EPA (ether-isopentane-ethanol 5:5:2 in volume ratio), ethanol, ethanol-water, and 2-methyltetrahydrofuran at 77 K, o-benzoylbenzoic acid (BBA) and methyl o-benzoylbenzoate (MBB) exhibit dual phosphorescences, a
Publikováno v:
The Journal of Physical Chemistry. 97:565-568
The photochemical reaction of dihydrotetraruthenium tridecacarbonyl, H[sub 2]Ru[sub 4](CO)[sub 13], was investigated by UV-visible and FT-IR absorption spectroscopies at 77 K in both a 3-methylpentane matrix and a polystyrene film. Upon irradiation a
Publikováno v:
The Journal of Physical Chemistry. 96:9565-9568
The photochemical reaction of dihydroirontriosmium tridecacarbonyl, H 2 FeOS 3 (CO) 13 , was invetigated by UV-visible and FT-IR absorption spectroscopies at 77 K both in a polystyrene film and a 3-methylpentane matrix. Upon UV-visible light irratati
Publikováno v:
The Journal of Physical Chemistry. 96:2059-2065
Fluorescence spectra of the photolyzed phenylsilane and its methyl derivatives have been measured in 3-methylpentane at 77 K. Broad emission bands have been observed around 400 nm for the photolyzed phenylsilane and phenylmethylsilanes. In addition t
Autor:
Mj. Remy, Georges Poncelet
Publikováno v:
The Journal of Physical Chemistry. 99:773-779
Nitrogen adsorption isotherms have been carried out on Y zeolites and dealuminated Y zeolites, mordenites and dealuminated mordenites, and ZSM-5 zeolites. The treatment of these isotherms by the Dubinin-Radushkevich method has led to a first estimati