3 research outputs found
The mechanism for the electrooxidation of procarbazine pharmaceutical preparation in alkaline media and its mathematical description
The mechanism for the electrooxidation of procarbazine in alkaline media has been proposed. The process is realized completely on the electrode surface and is adsorption-controlled. The oscillatory behavior in this case is more probable, than for neutral media and may be caused by influences of electrochemical oxidation and salt dissolution from the electrode surface
ΠΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΎΠΏΠΈΡΠ°Π½ΠΈΠ΅ Β«ΠΏΠΎΠ»ΠΈΡΠΈΠΎΡΠ΅Π½ΠΎΠ²ΠΎΠ³ΠΎ ΠΏΠ°ΡΠ°Π΄ΠΎΠΊΡΠ°Β» Π΄Π»Ρ ΠΏΠΎΡΠ΅Π½ΡΠΈΠΎΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ»Π΅ΠΊΡΡΠΎΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠΈΠ·Π°ΡΠΈΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΡ ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ ΡΠΈΠΎΡΠ΅Π½ΠΎΠ²
The phenomenon of "polythiophene paradox" for insoluble polythiophenes based on electrochemically modified monomers has been described theoretically. The corresponding mathematical model was examined using linear theory of stability and bifurcation analysis. Stability conditions of steady state, monotonic and oscillatory instabilities have also been obtained.Π―Π²Π»Π΅Π½ΠΈΠ΅ Β«ΠΏΠΎΠ»ΠΈΡΠΈΠΎΡΠ΅Π½ΠΎΠ²ΠΎΠ³ΠΎ ΠΏΠ°ΡΠ°Π΄ΠΎΠΊΡΠ°Β» Π΄Π»Ρ Π½Π΅ΡΠ°ΡΡΠ²ΠΎΡΠΈΠΌΡΡ
ΠΏΠΎΠ»ΠΈΡΠΈΠΎΡΠ΅Π½ΠΎΠ² Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΡΠ»Π΅ΠΊΡΡΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΌΠΎΠ½ΠΎΠΌΠ΅ΡΠΎΠ² Π±ΡΠ»ΠΎ ΠΎΠΏΠΈΡΠ°Π½ΠΎ ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈ. Π‘ΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΡΡΡΠ°Ρ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠ°Ρ ΠΌΠΎΠ΄Π΅Π»Ρ Π±ΡΠ»Π° ΡΠ°ΡΡΠΌΠΎΡΡΠ΅Π½Π° Ρ ΠΏΠΎΠΌΠΎΡΡΡ Π»ΠΈΠ½Π΅ΠΉΠ½ΠΎΠΉ ΡΠ΅ΠΎΡΠΈΠΈ ΡΡΡΠΎΠΉΡΠΈΠ²ΠΎΡΡΠΈ ΠΈ Π±ΠΈΡΡΡΠΊΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π°. Π£ΡΠ»ΠΎΠ²ΠΈΡ ΡΡΡΠΎΠΉΡΠΈΠ²ΠΎΡΡΠΈ ΡΡΠ°ΡΠΈΠΎΠ½Π°ΡΠ½ΠΎΠ³ΠΎ ΡΠΎΡΡΠΎΡΠ½ΠΈΡ, ΠΌΠΎΠ½ΠΎΡΠΎΠ½Π½ΠΎΠΉ ΠΈ Π°Π²ΡΠΎΠΊΠΎΠ»Π΅Π±Π°ΡΠ΅Π»ΡΠ½ΠΎΠΉ Π½Π΅ΡΡΡΠΎΠΉΡΠΈΠ²ΠΎΡΡΠ΅ΠΉ ΡΠ°ΠΊΠΆΠ΅ Π±ΡΠ»ΠΈ ΠΏΠΎΠ»ΡΡΠ΅Π½Ρ
ΠΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΎΠΏΠΈΡΠ°Π½ΠΈΠ΅ Β«ΠΏΠΎΠ»ΠΈΡΠΈΠΎΡΠ΅Π½ΠΎΠ²ΠΎΠ³ΠΎ ΠΏΠ°ΡΠ°Π΄ΠΎΠΊΡΠ°Β» Π΄Π»Ρ ΠΏΠΎΡΠ΅Π½ΡΠΈΠΎΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ»Π΅ΠΊΡΡΠΎΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠΈΠ·Π°ΡΠΈΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΡ ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ ΡΠΈΠΎΡΠ΅Π½ΠΎΠ²
Received: 08.10.2016; accepted: 22.10.2016; published: 30.12.2016.ΠΠΎΡΡΡΠΏΠΈΠ»ΠΎ: 08.10.2016; ΠΏΡΠΈΡΠ½ΡΡΠΎ: 22.10.2016; ΠΎΠΏΡΠ±Π»ΠΈΠΊΠΎΠ²Π°Π½ΠΎ: 30.12.2016.The phenomenon of "polythiophene paradox" for insoluble polythiophenes based on electrochemically modified monomers has been described theoretically. The corresponding mathematical model was examined using linear theory of stability and bifurcation analysis. Stability conditions of steady state, monotonic and oscillatory instabilities have also been obtained.Π―Π²Π»Π΅Π½ΠΈΠ΅ Β«ΠΏΠΎΠ»ΠΈΡΠΈΠΎΡΠ΅Π½ΠΎΠ²ΠΎΠ³ΠΎ ΠΏΠ°ΡΠ°Π΄ΠΎΠΊΡΠ°Β» Π΄Π»Ρ Π½Π΅ΡΠ°ΡΡΠ²ΠΎΡΠΈΠΌΡΡ
ΠΏΠΎΠ»ΠΈΡΠΈΠΎΡΠ΅Π½ΠΎΠ² Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΡΠ»Π΅ΠΊΡΡΠΎΡ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈ ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΌΠΎΠ½ΠΎΠΌΠ΅ΡΠΎΠ² Π±ΡΠ»ΠΎ ΠΎΠΏΠΈΡΠ°Π½ΠΎ ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈ. Π‘ΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΡΡΡΠ°Ρ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠ°Ρ ΠΌΠΎΠ΄Π΅Π»Ρ Π±ΡΠ»Π° ΡΠ°ΡΡΠΌΠΎΡΡΠ΅Π½Π° Ρ ΠΏΠΎΠΌΠΎΡΡΡ Π»ΠΈΠ½Π΅ΠΉΠ½ΠΎΠΉ ΡΠ΅ΠΎΡΠΈΠΈ ΡΡΡΠΎΠΉΡΠΈΠ²ΠΎΡΡΠΈ ΠΈ Π±ΠΈΡΡΡΠΊΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π°. Π£ΡΠ»ΠΎΠ²ΠΈΡ ΡΡΡΠΎΠΉΡΠΈΠ²ΠΎΡΡΠΈ ΡΡΠ°ΡΠΈΠΎΠ½Π°ΡΠ½ΠΎΠ³ΠΎ ΡΠΎΡΡΠΎΡΠ½ΠΈΡ, ΠΌΠΎΠ½ΠΎΡΠΎΠ½Π½ΠΎΠΉ ΠΈ Π°Π²ΡΠΎΠΊΠΎΠ»Π΅Π±Π°ΡΠ΅Π»ΡΠ½ΠΎΠΉ Π½Π΅ΡΡΡΠΎΠΉΡΠΈΠ²ΠΎΡΡΠ΅ΠΉ ΡΠ°ΠΊΠΆΠ΅ Π±ΡΠ»ΠΈ ΠΏΠΎΠ»ΡΡΠ΅Π½Ρ