Supporting Information

Fabrication of A Polypropylene Immunoassay Platform by Photografting Reaction

Jing Jina, b, Jiao Mac, Lingjie Songa, Wei Jiang*a, Thomas Ederth*b

a State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China

b Division of Molecular Physics, IFM, Linköping University, 58183 Linköping, Sweden

c MOE Key Laboratory of Interface Science and Engineering in Advanced Materials and Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China

Figure S1. ART-FTIR spectra of PP and modified PP with different monomer molar ratios: (A) PP-g-P (HEMA-co-SBMA)-1 (SBMA: HEMA=1:4), (B) PP-g-P (HEMA-co-SBMA)-2 (SBMA: HEMA=1:1) and (C) PP-g-P(HEMA).

Figure S2. Fluorescent images of FITC-fibrinogen adsorption on the surfaces of PP and modified PP.

Figure S3. XPS C1s core-level spectra of PP-g-P(HEMA-co-SBMA) (A) and PP-g-P(HEMA-co-SBMA)-CDI (B).

Figure S4. Fluorescence intensity of antibody immobilized PP surfaces when the FITC-bovine IgG antigen concentration was 10pg/mL, the data from a representative of five independent experiments are presented as mean±SD values (*p< 0.05).