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Updated: May 13, 2026

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
Published on: June 20, 2019
Extending the limits of precision polymer synthesis: giant polyphenylene dendrimers in the megadalton mass range
Thi-Thanh-Tam Nguyen1, Martin Baumgarten, Ali Rouhanipour
1Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany.
Abstract:
The catalyst-free Diels-Alder synthesis of polyphenylene dendrimers with a chromophore core has now been demonstrated to achieve the seventh to ninth generations upon divergent growth. Since standard analytical tools such as size-exclusion chromatography do not provide realistic molecular weights, MALDI-TOF mass spectrometry was applied to characterize the complete series of nine generations. Perfection and monodispersity were thus elucidated at such high masses. Transmission electron microscopy imaging was used to determine the size of these molecularly defined nanosized "particles" with diameters of up to 33 nm.
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