SPECIAL ISSUE ON THE ASIAN SYMPOSIUM ON NANOTECHNOLOGY AND NANOSCIENCE 2002 (ASIANANO 2002); EDITED BY MASATSUGU SHIMOMURA AND TERUYA ISHIHARANo Access

SYNTHESIS OF THICK PORPHYRIN MOLECULAR WIRES BY A PALLADIUM CATALYZED OLIGOMERIZATION

HIROAKI OZAWA

Department of Chemistry, Faculty of Science, Ehime University, 2-5 Bunkyocho, Matsuyama, Ehime 790-8577, Japan

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and

TAKUJI OGAWA

Department of Chemistry, Faculty of Science, Ehime University, 2-5 Bunkyocho, Matsuyama, Ehime 790-8577, Japan

Precursory Research for Embryonic Science and Technology, Japan Science and Technology Corporation, 1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan

Corresponding author.

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https://doi.org/10.1142/S0219581X02000541Cited by:0 (Source: Crossref)

Abstract

In the aim to prepare thick porphyrin molecular wires, which is visible by atomic force microscopy (AFM), even on the rough surfaces of nanogap electrodes fabricated by electron beam lithography, dendrimer protected porphyrins whose two meso-positions are substituted with ethynyl groups. The porphyrin monomer was reacted with palladium catalyst to make oligomers. Analyses of them with time-of-flight mass spectroscopy (TOF-MS), gel-permeation-chromatography (GPC) revealed that the oligomers were distributed up to 16 mer, whose molecular weight was about 38 000 Daltons.

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