TY - JOUR
T1 - Second-order nonlinear optical properties of amphiphilic porphyrins in Langmuir-Blodgett monolayer assemblies
AU - Yamada, Sunao
AU - Kuwata, Kotaro
AU - Yonemura, Hiroaki
AU - Matsuo, Taku
N1 - Funding Information:
The authors thank M. Kawazu, T. Nakano, and M. Tateishi for their cooperation with the measurements. The work was partially supported by the Grant-in.Aid for Scientific Research (No. 04555199, 05453192) from the Ministry of Education, Science and Culture, and by the grant from The Asahi Glass Foundation.
PY - 1995/3/29
Y1 - 1995/3/29
N2 - Optical second harmonic generation (SHG) from the Langmuir-Blodgett (LB) monolayer assemblies of amphiphilic porphyrin and its some metal complexes has been investigated. Distinct SHG responses were observed with monolayers of amphiphilic 5-(4-N-hexadecylpyridinium)-10,15,20-triphenylporphine bromide (free base: H2 porphyrin) and its magnesium (Mg), copper (Cu), and zinc (Zn) complexes. The efficiency of SHG was in the order of Mg → Zn → Cu → H2-porphyrins, which could be well correlated with the order of the first reduction potential of the porphyrin. The result indicated that SHG was mainly attributed to charge transfer from the porphyrin ring to the pyridinium group. The tilt angle of the molecular hyperpolarizability for the Zn porphyrin was evaluated.
AB - Optical second harmonic generation (SHG) from the Langmuir-Blodgett (LB) monolayer assemblies of amphiphilic porphyrin and its some metal complexes has been investigated. Distinct SHG responses were observed with monolayers of amphiphilic 5-(4-N-hexadecylpyridinium)-10,15,20-triphenylporphine bromide (free base: H2 porphyrin) and its magnesium (Mg), copper (Cu), and zinc (Zn) complexes. The efficiency of SHG was in the order of Mg → Zn → Cu → H2-porphyrins, which could be well correlated with the order of the first reduction potential of the porphyrin. The result indicated that SHG was mainly attributed to charge transfer from the porphyrin ring to the pyridinium group. The tilt angle of the molecular hyperpolarizability for the Zn porphyrin was evaluated.
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U2 - 10.1016/1010-6030(94)03981-Y
DO - 10.1016/1010-6030(94)03981-Y
M3 - Article
AN - SCOPUS:0010395294
SN - 1010-6030
VL - 87
SP - 115
EP - 119
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
IS - 2
ER -