Platinum acetylide dendrons

Scheme 25 Porphyrin core dendrimers with platinum acetylide dendrons by Onitsuka and coworkers [76]...

Onitsuka and Takahashi reported the synthesis and characterization of zinc porphyrin core dendrimers with platinum acetylide based dendrons... 

A number of metal acetylide-containing dendrimers and stars have also been prepared." Scheme 25 shows the synthesis of a first-generation platinum acetylide dendrimer (87) containing 9 platimun complexes in its structure. Dendrimer 87 was made by the reaction of a chloro-substituted platinum complex (85) with an ethynyl functionalized dendron (86) in the presence of Cul." Dendrimers with up to 45 platinum emits were synthesized using this methodology. 

A variety of metal acetylide-containing stars and dendrimers have been synthesized.329-332 Dendrimer 280 was prepared via reaction of a chloro-substituted platinum complex 278 with ethynyl functionalized dendron 279 in the presence of Cul (Scheme 2.73).329 This method generated dendrimers with up to 45 platinum units. 

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