title: Synthesis and preparation of fluorinated polycarbonates enhancing the light absorption of fluorescent nanoparticles.
abstract: A new synthetic method for fluorinated polycarbonates without the use of any toxic phosgene gas is presented. The synthesis consists of a monomer synthesis followed by polymerization. The fluorinated polycarbonate (FPC) was confirmed by Fourier transform infrared spectroscopy (FT-IR) and NMR spectroscopy. The refractive index of the polymer was 1.466 determined by an Abbe refractometer. The contact angle measurement of the FPC films showed the hydrophobicity with water contact angle about 112.6 degrees. These films of varying thicknesses had over 98% transmittance. Taking advantage of the hydrophobicity and high transmittance of the FPCs, nanoparticles of FPCs were prepared directly in an aqueous solution with a reprecipitation method. Combining FPC solution with a solution containing fluorescent polymer (DTMSPV), nanoparticles with a core-shell structure were obtained easily with the reprecipitation method. The fluorescence intensity of the DTMSPV in the core-shell nanoparticles were much enhanced up to 34.1% compared to the molecularly dispersed DTMSPV solution.
authors.affiliation: Active Polymer Center for Pattern Integration, Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, South Korea.
authors.forename: Teahoon
authors.initials: T
authors.lastname: Park
authors.forename: Syed Nawazish
authors.initials: SN
authors.lastname: Ali
authors.forename: Jungmok
authors.initials: J
authors.lastname: You
authors.forename: Byeonggwan
authors.initials: B
authors.lastname: Kim
authors.forename: Eunkyoung
authors.initials: E
authors.lastname: Kim