An electroreflectance study of novel hemin-imidazole complexes at a pyrolytic graphite electrode

Application of multi-walled carbon nanotubes functionalized with hemin for oxygen detection in neutral solution

“…This is only about 40 mV higher than that obtained with a hemin-modified basal plane PG [34,53], glassy carbon [33], or PG electrode [54]. In addition, it is about 20 mV more positive than the formal potential of hemin adsorbed on an edge plane PG electrode [55]. Our result indicates that (a) the formal potential of hemin depends only slightly on the characteristics of the electrode surface and (b) the small positive shift of the potential observed may be attributed to an improved reversibility of electron transfer processes on the MWNTs [56].…”

Electrochemical detection of dioxygen and hydrogen peroxide by hemin immobilized on chemically converted graphene

“…Atomic force microscopic (AFM) images were taken out using a Nanoscope III MultiMode SPM. [37,38]. In comparison, the UV-visible spectrum of CCG does not show any absorption band in the wavelength range of 300-800 nm.…”

An electroreflectance approach to study out the puzzling state of myoglobin in a DDAB film on a pyrolytic graphite electrode surface

“…2. The spectral curves are quite similar to the curves for hemin directly adsorbed on graphite electrodes [11,[14][15][16]. However, in light of the amount of electroactive species and the single-component signal feature, we look at hemin in the bulk film near the electrode but not only the adsorbed species.…”

“…2: two negative-going ER band peaks at 439 and 544 nm and two positive-going peaks at 476 and 608 nm were observed. The spectral curve shape was independent of the modulation frequency (8,14, and 84 Hz).…”

“…Previously, one of the authors (T.S.) made preliminary ER measurements and was surprised with the similarity of the ER spectra between Mb-DDAB and 4 hemin-DDAB [7,8]. Recent debates inspired us to revisit ER measurements of Mb in DDAB more carefully and systematically.…”