Behavior of polymeric stars with fullerene core in aqueous solution: structural investigation by neutron and light scattering
✍ Scribed by V.T Lebedev; Gy Török; D.N Orlova; V.V Klyubin; A.V Arutyunyan; A.I Sibilev; O.V Nazarova; S.N Bokov; G.M Pavlov; E.F Panarin
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 211 KB
- Volume
- 350
- Category
- Article
- ISSN
- 0921-4526
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✦ Synopsis
Star-shape derivatives of C 60 with poly(N-vinylpyrrolidone) chains, grafted to C 60 ; were studied in aqueous solution by small-angle neutron scattering in the range of q ¼ 0:0420:8 nm À1 and dynamic light scattering. From SANS data we found the functionality of fullerene center nE4: Really a star's gyration radius B6 nm exceeded the Gaussian molecular size by B40% and the volume was increased by the factor of 3. Such polymer shells make stars' interaction stronger leading to their association. Dynamic light scattering indicates the formation of extended associates (B1000 nm in diameter) involving B10% of stars.