Diamond Rings or Dumbbells: Controlling the Structure of Poly(ethylene glycol)–Fullerene [60] Adducts by Varying Linking Chain Length | Zendy

Hin Chun Yau | Zendy; Mustafa K. Bayazit | Zendy; Joachim H. G. Steinke | Zendy; Milo S. P. Shaffer | Zendy

Open Access

Diamond Rings or Dumbbells: Controlling the Structure of Poly(ethylene glycol)–Fullerene [60] Adducts by Varying Linking Chain Length

Author(s) -

Hin Chun Yau,

Mustafa K. Bayazit,

Joachim H. G. Steinke,

Milo S. P. Shaffer

Publication year - 2014

Publication title -

macromolecules

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.994

H-Index - 313

eISSN - 1520-5835

pISSN - 0024-9297

DOI - 10.1021/ma501200e

Subject(s) - ethylene glycol , peg ratio , polymer chemistry , fullerene , dumbbell , proton nmr , diamond , polymer , fourier transform infrared spectroscopy , chemistry , adduct , ring (chemistry) , materials science , crystallography , chemical engineering , organic chemistry , medicine , finance , engineering , economics , physical therapy

Fullerene [60] (C60) and poly(ethylene glycol) (PEG) adducts were prepared via 1,3-dipolar cycloaddition of bis-azido-terminated linear PEG (N3-PEG-N3) and C60. While long chain length PEGs (Mn = 1000 and 3350 Da) yielded the cyclic diamond ring structures (⊂C60PEG1000⊃ and ⊂C60PEG3350⊃), short-chained PEG (Mn = 200 Da) yielded a telechelic dumbbell structure (C60-PEG200-C60). Both dumbbell and diamond ring structures were characterized by MALDI-TOF-MS, 1H NMR, FTIR, UV–vis, and elemental analysis (EA). The results highlight the structural dependence of the PEG-C60 adducts on the chain length of the azido-terminated polymer, a factor previously neglected.

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