Isomerization and fluorescence depolarization of merocyanine 540 in polyacrylic acid. Effect ofpH
نویسندگان
چکیده
منابع مشابه
Photodynamic action of merocyanine 540 on carcinoma of cervix cells.
Results of the studies carried out on localization and photodynamic action of merocyanine 540 (MC540) on carcinoma of cervix (HeLa) cells are presented. Fluorescence microscopic study showed that when HeLa cells were incubated with MC540 in dark, the dye localized in plasma membrane of cells. Photoirradiation of cells in presence of MC540 led to enhancement of dye uptake, intracellular localiza...
متن کاملThe Inertial Effect in Rotational Fluorescence Depolarization
The influence of the moment of inertia on the rotational fluorescence depolarization is discussed. Based on experimental results obtained for five luminescent compounds: 2,5-diphenyloxazole (PPO), 2,2'-p-phenylene-bis(5-phenyloxazole) (POPOP) , p-bis[2-(5-a-naphthyloxazolyl)]-benzene (a-NOPON), 4-dimethylamino-a)-methylsulphonyl-trans-styrene (3 a) in n-parafines at low viscosity (from 0.22 x 1...
متن کاملhistological evaluation of the effect of three medicaments; trichloracetic acid, formocresol and mineral trioxide aggregate on pulpotomized teeth of dogs
چکیده ندارد.
15 صفحه اولPhotophysical Processes of Merocyanine 540 in Solutions and in Organized Media
Photophysical processes of merocyanine 540 (MC540) are studied using picosecond time-resolved emission spectroscopy. The nonradiative rate of MC540 increases from 0.32 × 109 s-1 in dioxane to 8.73 × 109 s-1 in water, i.e., nearly 27 times. This is attributed to the decrease in the barrier of photoisomerization with increase in polarity and the consequent increase in the rate of photoisomerizati...
متن کاملMerocyanine 540-sensitized photoinactivation of enveloped viruses in blood products: site and mechanism of phototoxicity.
The amphipathic dye, merocyanine 540 (MC540), which preferentially photosensitizes enveloped viruses and virus-infected cells, is currently being evaluated in preclinical models as a blood sterilizing agent. In this communication, we report on an initial analysis of the site and nature of MC540-mediated photodynamic damages to human herpes simplex virus type 1 and human cytomegalovirus. The com...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Chemical Sciences
سال: 2002
ISSN: 0253-4134,0973-7103
DOI: 10.1007/bf02704194