TY - JOUR
T1 - Direct electron transfer of haemoglobin and myoglobin in methanol and ethanol at didodecyldimethylammonium bromide modified pyrolytic graphite electrodes
AU - Ivanova, Ekaterina V.
AU - Magner, Edmond
PY - 2005/4
Y1 - 2005/4
N2 - In aqueous buffer, haemoglobin and myoglobin undergo direct electron transfer at bare and didodecyldimethylammonium bromide modified pyrolytic graphite electrodes. On immersion of the protein modified electrodes in methanol and ethanol, both proteins displayed a faradaic response, with E°′ decreasing in comparison to the values obtained in aqueous buffer. Unlike haemoglobin, the E°′ of myoglobin displayed a complex dependence on temperature, which was not observed with Hb, and displayed significant changes in ΔH°′ and ΔS°′.
AB - In aqueous buffer, haemoglobin and myoglobin undergo direct electron transfer at bare and didodecyldimethylammonium bromide modified pyrolytic graphite electrodes. On immersion of the protein modified electrodes in methanol and ethanol, both proteins displayed a faradaic response, with E°′ decreasing in comparison to the values obtained in aqueous buffer. Unlike haemoglobin, the E°′ of myoglobin displayed a complex dependence on temperature, which was not observed with Hb, and displayed significant changes in ΔH°′ and ΔS°′.
KW - DDAB
KW - Direct electrochemistry
KW - Haemoglobin
KW - Myoglobin
KW - Non-aqueous
UR - http://www.scopus.com/inward/record.url?scp=15044363457&partnerID=8YFLogxK
U2 - 10.1016/j.elecom.2005.01.015
DO - 10.1016/j.elecom.2005.01.015
M3 - Article
AN - SCOPUS:15044363457
SN - 1388-2481
VL - 7
SP - 323
EP - 327
JO - Electrochemistry Communications
JF - Electrochemistry Communications
IS - 4
ER -