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Shape‐Persistent Polyphenylene Dendrimers—Restricted Molecular Dynamics from Advanced Solid‐State Nuclear Magnetic Resonance Techniques
Author(s) -
Wind M.,
Wiesler U.M.,
Saalwächter K.,
Müllen K.,
Spiess H. W.
Publication year - 2001
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(200105)13:10<752::aid-adma752>3.0.co;2-v
Subject(s) - dendrimer , materials science , solid state , solid state nuclear magnetic resonance , molecular dynamics , chemical physics , nanotechnology , polymer chemistry , nuclear magnetic resonance , chemistry , computational chemistry , physics
The molecular dynamics of polyphenylene dendrimers (e.g., the second generation dendrimer shown in the Figure) is investigated here using advanced solid‐state NMR techniques. It is found that well‐localized, restricted reorientation of single terminal phenyl substituents occurs around fixed axes only, clearly demonstrating the shape persistence of these dendrimers. The synthetic approach to these polyaromatic dendrimers is also described.