TY - JOUR
T1 - Medium effects on the photophysical properties of porphyrazine‐metal(II) complexes in micellar solutions
AU - Dürr, Heinz
AU - Hayo, Rudolf
AU - David, Elke
AU - Willner, Itamar
AU - Zahavy, Eran
PY - 1995
Y1 - 1995
N2 - The solubility of different phthalocyanine and porphyrazine metal(II) complexes 1–6 is described in cationic, neutral and anionic surfactants under various conditions. Optimal conditions were evaluated and photophysical properties of the dyes were measured. Various possibilities which have a direct effect on the aggregation phenomena were tested and dimerization constants and extinction coefficients are derived for the optimal monomer conditions. Each study was carried out in cationic, neutral and anionic micelles. With light‐scattering experiments micellar shapes were measured and compared with theoretical models. Triplet‐absorption spectra of the porphyrazine 2–4 were recorded and showed similar maxima to phthalocyanine 1. In steady‐state experiments photoinduced electron transfer reactions of 1, 2, 5 and 6 were investigated for several electron acceptors and hydrogen was evolved from 1, 3, 5 and 6 in a four‐component sacrificial system in order to check the photocatalytic properties of hydrophobic porphyrazines dissolved in surfactants.
AB - The solubility of different phthalocyanine and porphyrazine metal(II) complexes 1–6 is described in cationic, neutral and anionic surfactants under various conditions. Optimal conditions were evaluated and photophysical properties of the dyes were measured. Various possibilities which have a direct effect on the aggregation phenomena were tested and dimerization constants and extinction coefficients are derived for the optimal monomer conditions. Each study was carried out in cationic, neutral and anionic micelles. With light‐scattering experiments micellar shapes were measured and compared with theoretical models. Triplet‐absorption spectra of the porphyrazine 2–4 were recorded and showed similar maxima to phthalocyanine 1. In steady‐state experiments photoinduced electron transfer reactions of 1, 2, 5 and 6 were investigated for several electron acceptors and hydrogen was evolved from 1, 3, 5 and 6 in a four‐component sacrificial system in order to check the photocatalytic properties of hydrophobic porphyrazines dissolved in surfactants.
UR - http://www.scopus.com/inward/record.url?scp=11744322815&partnerID=8YFLogxK
U2 - 10.1002/recl.19951141121
DO - 10.1002/recl.19951141121
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AN - SCOPUS:11744322815
SN - 0165-0513
VL - 114
SP - 549
EP - 555
JO - Recueil des Travaux Chimiques des Pays‐Bas
JF - Recueil des Travaux Chimiques des Pays‐Bas
IS - 11-12
ER -