Electrochemical oxidation of asymmetric chalcones containing two terminal electroactive moieties

Effect of the Position and Amount of the Electron‐Donating Groups in Substituted 2,4,6‐Triphenylpyrimidines on their Thermal, Optical and Electrochemical Properties

“…The presence of the peak on the cathodic curve of compounds 9–13 is probably due to the formation of a dimer structure, the two molecules being linked via 3‐position of the carbazole fragment. The data obtained are consistent with our previous studies on the electrochemical oxidation of the compounds containing several electroactive fragments [32] …”

“…The data obtained are consistent with our previous studies on the electrochemical oxidation of the compounds containing several electroactive fragments. [32] Further potential sweep for 2,4,6-trisubstituted pyrimidines 10, 11 is accompanied by a current strength increase with each subsequent cycle.…”

Synthesis and Characterization of Neutral Cyclometalated Platinum(II) Complexes and their Antibacterial and Cytotoxic Evaluations

“…The E ox (onset) vs. Ag/Ag + data of each fluorophore are summarized in Table 4. The highest occupied molecular orbital (HOMO) could be estimated by the equation of E HOMO =−( E ox +4.42) eV, while the lowest unoccupied molecular orbital (LUMO) could be estimated by the difference of HOMO and optical band gap ( E g, opt ) from the onset of the UV‐visible absorption spectra measured in dichloromethane and the corresponding HOMO value [29] …”

“…The highest occupied molecular orbital (HOMO) could be estimated by the equation of E HOMO = (E ox + 4.42) eV, while the lowest unoccupied molecular orbital (LUMO) could be estimated by the difference of HOMO and optical band gap (E g, opt ) from the onset of the UVvisible absorption spectra measured in dichloromethane and the corresponding HOMO value. [29] The cyclic voltammograms and electrochemical data of Pt(II) complexes are summarized in Figure 2 and Table 4, respectively. The E onset ox value, which reflects the ease of oxidation of a compound, is directly related to the HOMO value of the compound.…”

“…Complex 2 shows an oxidation peak at 0.61 V, which may be attributed to the oxidation of NMe 2 group. [29] An oxidation peak at 0.99 to 1.06 V for Pt(II) complexes is attributed to the ligand-centered transitions (IL)[π!π*] with MLCT [d(Pt)!π*-(C^N^C)] and ligand-to-ligand charge transfer (LLCT) [π!π*] character. [30] Since 2 has a first oxidation with lower voltage, it shows a higher HOMO value compared to the others.…”