Photochemical events during photosensitization of colloidal ZnO nanoparticles by riboflavin
نویسندگان
چکیده
منابع مشابه
control of the optical properties of nanoparticles by laser fields
در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
15 صفحه اولRiboflavin-mediated photosensitization of Vinca alkaloids distorts drug sensitivity assays.
Poor reproducibility of cytotoxicity tests with Vinca alkaloids has frequently been reported. A commonly presumed light sensitivity of the drugs could not be confirmed. However, we found that they are photosensitized by riboflavin (vitamin B2), an obligatory component of cell culture media. Light of wavelengths below 500 nm triggered rapid photoreactions of riboflavin with vinblastine, vincrist...
متن کاملRiboflavin-mediated Photosensitization of Vinca Alkaloids Distorts Drug Sensitivity Assays1
Poor reproducibility of cytotoxicity tests with Vinca alkaloids has fre quently been reported. A commonly presumed light sensitivity of the drugs could not be confirmed. However, we found that they are photo sensitized by riboflavin (vitamin li.i, an obligatory component of cell culture media. Light of wavelengths below 500 nm triggered rapid photoreactions of riboflavin with vinblastine, \ im ...
متن کاملPhotochemical electronic doping of colloidal CdSe nanocrystals.
A method for electronic doping of colloidal CdSe nanocrystals (NCs) is reported. Anaerobic photoexcitation of CdSe NCs in the presence of a borohydride hole quencher, Li[Et3BH], yields colloidal n-type CdSe NCs possessing extra conduction-band electrons compensated by cations deposited by the hydride hole quencher. The photodoped NCs possess excellent optical quality and display the key spectro...
متن کاملSynthesis of ZnO Nanoparticles by Spray Pyrolysis Method
Zinc oxide (ZnO) nanoparticles were synthesized by spray pyrolysis method using an aqueous solution of zinc acetate at various concentrations from 5 to 25 wt%. The decomposition of precursor solutions was carried out at 800, 1000 and 1200ºC under different atomizing pressures. The crystal structure and morphology of synthesized nanoparticles were characterized by X-Ray Diffraction ...
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ژورنال
عنوان ژورنال: Bulletin of Materials Science
سال: 2012
ISSN: 0250-4707,0973-7669
DOI: 10.1007/s12034-012-0415-2