Novel fluorescent amphiphilic block copolymers: photophysics behavior and interactions with DNA
X. J. Lu, L. Z. Meng, X. X. Zhong
Vol. 1., No.6., Pages 356-363, 2007
DOI: 10.3144/expresspolymlett.2007.50
DOI: 10.3144/expresspolymlett.2007.50
Corresponding author: L. Z. Meng 
GRAPHICAL ABSTRACT
ABSTRACT
In this study, novel amphiphilic fluorescent copolymers poly(N-vinylpyrrolidone)-b-poly(N-methacryloyl-N'-(α-naphthyl)thiourea) (PVP-b-PNT) were synthesized via ATRP with poly(N-vinylpyrrolidone)-Cl as macroinitiator and N-methacryloyl-N'-α-naphthylthiourea (NT) as hydrophobic segment. PVP-b-PNT copolymers were characterized by 1H NMR, GPC-MALLS and fluorescence measurements. The aggregation behavior of PVP-b-PNT in water was investigated by transmission electron microscope (TEM) and dynamic light scattering (DLS) measurement. The photophysics behavior of PVP-b-PNT showed that block copolymer formed strong excimer. The interaction of DNA with the block copolymer made the excimer of block copolymer quench. The cytotoxicity result of PVP-b-PNT in cell culture in vitro indicated that this copolymer PVP-b-PNT had good biocompatibility.
