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Convergent Synthesis of Platinum–Acetylide Dendrimers
Author(s) -
Onitsuka Kiyotaka,
Fujimoto Masanori,
Kitajima Hotaka,
Ohshiro Nobuaki,
Takei Fumie,
Takahashi Shigetoshi
Publication year - 2004
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200400544
Subject(s) - acetylide , dendrimer , platinum , chemistry , acetylene , conjugated system , molecule , combinatorial chemistry , polymer chemistry , photochemistry , organic chemistry , catalysis , polymer
An efficient convergent route to the main chain type of organometallic dendrimers, in which platinum moieties are linked by 1,3,5‐triethynylbenzene, has been developed. The synthesis of platinum–acetylide dendrons involved the use of two types of trialkylsilyl groups for protection of the terminal acetylene. The platinum–acetylide dendrimers were prepared up to the third generation by reacting dendrons with a triplatinum core and a tetraplatinum core. Spectroscopic characterization and trace experiments by gel permeation chromatography indicated that the dendrimer molecules have no structural defects. Although a π‐conjugated system was used as the bridging ligand, electronic and fluorescence spectra suggested that the interaction among the platinum–acetylide moieties in the dendrimers was small.