Photoinduced synthesis of oligoesters


Kumbaraci V., Talinli N. , YAGCI Y.

MACROMOLECULES, cilt.39, ss.6031-6035, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 39 Konu: 18
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1021/ma0607721
  • Dergi Adı: MACROMOLECULES
  • Sayfa Sayıları: ss.6031-6035

Özet

For the first time, a true step-growth polymerization, i.e, polyesterification, was achieved by a photochemical means. Thus, heterobifunctional monomers, namely benzodioxinone and naphthodioxinone compounds possessing both chromophoric and aliphatic hydroxyl groups in the structure ( HDPD and HDNP, respectively), were synthesized by a ring closure and subsequent etherification processes and characterized. Photolysis of these compounds in CH2Cl2 at lambda(inc) = 300 nm yielded oligoesters with narrow molecular weight distribution. In the case of HDNP, photolysis can be performed at higher wavelengths, e. g., at lambda(inc) = 350 nm, because of the extended absorption introduced by the naphthalene ring. The structure of the photochemically formed oligoester was confirmed by FT-IR and H-1 NMR spectral measurements.