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Synthesis and Characterization of a High Molecular Weight Stiff Dendrimer
Author(s) -
Xu Zhifu,
Moore Jeffrey S.
Publication year - 1993
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199302461
Subject(s) - dendrimer , yield (engineering) , benzene , monomer , elemental analysis , pentane , chemistry , catalysis , characterization (materials science) , carbon 13 nmr , polymer chemistry , materials science , organic chemistry , nanotechnology , polymer , composite material
94 Monomeric units make up 1 , the largest pure hydrocarbon yet characterized (C 1134 H 1146 ). The compound which, thanks to its di‐ tert ‐butyl‐phenyl groups, is extremely soluble in pentane (!) was obtained from the monodendron precursor and triiodobenzene with a Pd catalyst in 37% yield. Elemental analysis and 1 H NMR spectra clearly prove its structure. The benzene rings are shown as filled circles; the lines in between represent CC units.