TY - JOUR
T1 - Synthesis of a low-bandgap polymer bearing side groups containing phenoxy radicals
AU - Innami, Yu
AU - Kiebooms, Rafaël H.L.
AU - Koyano, Tamotsu
AU - Ichinohe, Masaaki
AU - Ohkawa, Satoshi
AU - Kawabata, Kohsuke
AU - Kawamatsu, Masataka
AU - Matsuishi, Kiyoto
AU - Goto, Hiromasa
PY - 2011/10
Y1 - 2011/10
N2 - Poly(isothianaphthene methine) bearing di-tertbutylphenoxide in the side chain was prepared by reacting isothianaphthene and 3,5-di-tert-butyl-4- hydroxybenzaldehyde in the presence of POCl3. A reference polymer with no hydroxy group in the side chain was also synthesized. Both polymers are characterized by a low-bandgap with value of ca. 1.3 eV obtained by optical absorption spectroscopy, and ca. 1.7 eV estimated from an electrochemical method. After treatment with PbO2 as an oxidizer, phenoxy radicals were generated by oxidation in the polymer side groups. Optical absorption measurements and electron spin resonance (ESR) showed a characteristic signal due to phenoxy radicals. Magnetic properties of the polymer were examined with ESR and superconducting quantum interference device (SQUID) measurements. The results suggested that the polymer shows paramagnetic behavior.
AB - Poly(isothianaphthene methine) bearing di-tertbutylphenoxide in the side chain was prepared by reacting isothianaphthene and 3,5-di-tert-butyl-4- hydroxybenzaldehyde in the presence of POCl3. A reference polymer with no hydroxy group in the side chain was also synthesized. Both polymers are characterized by a low-bandgap with value of ca. 1.3 eV obtained by optical absorption spectroscopy, and ca. 1.7 eV estimated from an electrochemical method. After treatment with PbO2 as an oxidizer, phenoxy radicals were generated by oxidation in the polymer side groups. Optical absorption measurements and electron spin resonance (ESR) showed a characteristic signal due to phenoxy radicals. Magnetic properties of the polymer were examined with ESR and superconducting quantum interference device (SQUID) measurements. The results suggested that the polymer shows paramagnetic behavior.
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U2 - 10.1007/s10853-011-5602-9
DO - 10.1007/s10853-011-5602-9
M3 - Article
AN - SCOPUS:80051547836
SN - 0022-2461
VL - 46
SP - 6556
EP - 6562
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 20
ER -