The effect of bovine myoglobin on ultraviolet fluorescence of gadolinium-doped zinc oxide films

ZnO thin films doped with 0.1 mass% of Gd have been firstly developed with the aim of using as sensitive surfaces for bioanalysis with fluorescent registration. Gd-doped films were prepared by sol-gel and spin coating techniques on monocrystalline silicon supports. Adding Gd3+ ions resulted in a red shift maximum (em = 380 nm) band of ZnO fluorescence by 8-10 nm. Bovine myoglobin (MB) at neutral pH =7 (isoelectric point) was deposited from solutions with concentrations of MB in the interval from 10-6 to 10-12 M on Gd-doped ZnO surfaces by spin coating techniques. This led to 5-8 % fluorescence quenching for 10-6 – 10-10 М MB concentrations and 20 % fluorescence enhancing for the 10-12 M one. © 2019 Bulgarian Academy of Sciences, Union of Chemists in Bulgaria.

Authors
Publisher
Bulgarian Academy of Sciences
Language
English
Pages
135-137
Status
Published
Volume
51
Year
2019
Organizations
  • 1 RUDN University - Peoples’ Friendship University of Russia, Moscow Miklukho-Maklaya str.6, Moscow, Russian Federation
  • 2 National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russian Federation
  • 3 General Physics Institute RAS, Moscow, Russian Federation
  • 4 Semenov Institute of Chemical Physics RAS, Moscow, Russian Federation
Keywords
Gadolinium; Myoglobin (MB); Sol-gel method; Ultraviolet fluorescence; ZnO thin film
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