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- By comparison with Reference 9.
- Poths , H. 1989 . Diploma thesis , FR-Germany : Mainz .
- For side group polymer 6, a solvent mixture CH2Cl2/THF (vol. ratio 1:1) was used.
- By comparison of the integrals of the proton signals at 0.9 ppm and the aromatic protons at 6.87–8.23 ppm (see Figure 1).
- Bualek , S. and Zentel , R. 1988 . Makromol. Chem. , 189 : 797