Linear‐Dendritic Alternating Copolymers. (27th June 2019)

• Record Type: Journal Article
• Authors: Sun, Haotian; Haque, Farihah M.; Zhang, Yi; Commisso, Alex; Mohamed, Mohamed Alaa; Tsianou, Marina; Cui, Honggang; Grayson, Scott M.; Cheng, Chong
• Is Part Of: Angewandte Chemie. Volume 131:Number 31(2019)
• Page Start: 10682
• Page End: 10686
• Publication Date: 2019-06-27
• Subjects: Alternierende Copolymere -- Klickchemie -- Linear-dendritische Copolymere -- Nanostäbchen -- Selbstorganisation; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201903402
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Herein, the design, synthesis, and characterization of an unprecedented copolymer consisting of alternating linear and dendritic segments is described. First, a 4th‐generation Hawker‐type dendron with two azide groups was synthesized, followed by a step‐growth azide‐alkyne "click" reaction between the 4th‐generation diazido dendron and poly(ethylene glycol) diacetylene to create the target polymers. Unequal reactivity of the functional groups was observed in the step‐growth polymerization. The resulting copolymers, with alternating hydrophilic linear and hydrophobic dendritic segments, can spontaneously associate into a unique type of microphase‐segregated nanorods in water. Abstract : Die Stufenwachstumspolymerisation mit gut definierten linearen polymeren und dendritischen Reaktanden führt zu linear‐dendritischen Copolymeren, in denen die linearen Segmente als Abstandhalter zwischen den Dendronen dienen. Mit den alternierenden hydrophilen linearen Blöcken und hydrophoben Dendronen können sich die Copolymere spontan zu einem einzigartigen Typ von mikrophasensegregierten Nanostäbchen zusammenfügen.