Structural and optical properties of CdS nanocrystals grown in water-soluble diblock copolymer

BAYKUL M. C., Ruzgar H., Arman E., Bas Y., BÜTÜN V.

12th International Conference on Formation of Semiconductor Interfaces, Weimar, Almanya, 01 Şubat 2010, cilt.7, ss.423-426 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 7
  • Doi Numarası: 10.1002/pssc.200982468
  • Basıldığı Şehir: Weimar
  • Basıldığı Ülke: Almanya
  • Sayfa Sayıları: ss.423-426
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

Methoxy-capped poly(ethylene glycol) (PEG) was used to prepare ATRP initiator (PEGBr). PEGBr was copolymerised with t-butyl methacrylate (tBMA) by using atom transfer radical polymerization (ATRP) chemistry. tBMA residues were converted to methacrylic acid (MAA) by acidic hydrolysis under mild conditions to give well-defined PEG-b-PMAA diblock copolymers. Near-monodisperse micellization was observed by the addition of CdCl2 (1.0 wt%) into PEG-b-PMAA diblock copolymer solution at pH 11.0 due to complexation of MAA(-) with Cd+2 ions. After addition of thioacetamide into the micellar solution, the Cd+2 cations in the resulting micelles were converted to CdS to obtain CdS nanocrystals in the micelles.