Abstract
Porphyrin-cored poly(l-lactide) (SPPLA) was successfully synthesized from ring-opening polymerization (ROP) of l-lactide initiated with porphyrin core. Then, SPPLA was coupled with benzylsulfanylthiocarbonylsufanylpropionic acid (BSPA), and a macro-reversible addition-fragmentation chain transfer (macroRAFT) polymerization agent SPPLA-BSPA was obtained. Finally, star-shaped porphyrin-cored poly(l-lactide)-b-poly(gluconamidoethyl methacrylate) (SPPLA-b-PGAMA) block copolymers were synthesized via RAFT of unprotected gluconamidoethyl methacrylate (GAMA) in 1-methyl-2-pyrrolidinone (NMP) solution at 70°C. The structure of this block copolymer was thoroughly studied by nuclear magnetic resonance spectroscopy (NMR), gel permeation chromatography (GPC), and differential scanning calorimetry (DSC). Under the irradiation, such SPPLA-b-PGAMA copolymer exhibits efficient singlet oxygen generation and indicates high fluorescence quantum yields. Notably, with UV-vis and dynamic light scattering (DLS) analysis, SPPLA-b-PGAMA showed a very specific recognition with concanavalin A (ConA). Particularly, MTT shows that the cytotoxicity of SPPLA-b-PGAMA against COS-7 cells was very low and, when given a longer irradiation time, more BEL-7402 cancer cells died, which will be investigated in this study.
Original language | English |
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Pages (from-to) | 2111-2122 |
Number of pages | 12 |
Journal | Colloid and Polymer Science |
Volume | 292 |
Issue number | 9 |
DOIs | |
State | Published - Sep 2014 |
Externally published | Yes |
Keywords
- Biomolecule recognition
- Glycopolymer
- RAFT
- Self-assembly
- Targeted