Changing the structural and physical properties of 3-arm star poly(δ-valerolactone)s by a branch-point design. Issue 32 (23rd March 2021)

• Record Type: Journal Article
• Authors: Ogiwara, Hibiki; Ishiwari, Fumitaka; Kimura, Tadahiro; Yamashita, Yukihiro; Kajitani, Takashi; Sugimoto, Atsuki; Tokita, Masatoshi; Takata, Masaki; Fukushima, Takanori
• Is Part Of: Chemical communications. Volume 57:Issue 32(2021)
• Page Start: 3901
• Page End: 3904
• Publication Date: 2021-03-23
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc01092a
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : This study provides an answer to the question of whether polymer properties can be modulated by the design of branching points. Abstract : The chemical structure of a branch point of star-shaped polymers has been considered to have a small influence on the physical properties of the entire polymer. Contrary to this general notion, here we show that a 3-arm star polymer, composed of three poly(δ-valerolactone) arms extended from one side of a triptycene branch point, exhibits a remarkably high complex viscosity, compared to the analogous star-shaped polymers with a branch point of a triptycene isomer or triphenylethane.