期刊
POLYMER CHEMISTRY
卷 6, 期 1, 页码 97-105出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4py01164c
关键词
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资金
- National Natural Science Foundation of China [21104044, 51473092]
- National Basic Research Program of China (973 Program) [2013CB834701]
- Ph.D. Programs Foundation of Ministry of Education of China [20110073120040]
New multifunctional polymers PI and PII are synthesized from 4,4'-thiodibenzenethiol and 1,2-bis[4-(bro-moalkoxy)phenyl]-1,2-diphenylethene through facile thiol-bromo click polymerization. The resulting polymers exhibit high refractive indices over a wide spectral region (300-1700 nm) and large Abbe numbers due to the presence of sulfur atoms and a large fraction of aromatic building blocks. The polymers also show high optical transparency in the visible region, rendering them ideal candidates for optical applications. Additionally, they demonstrate typical aggregation-induced emission (AIE) characteristics owing to the incorporation of propeller-like tetraphenylethene (TPE) moieties. The polymers are non-emissive in good solvents; however, they become highly fluorescent as aggregated suspensions whose emission is further effectively quenched by a representative explosive of picric acid (PA), exhibiting a significantly amplified superquenching effect, with the detection limit as low as 0.5 ppm. These results suggest a great promise of preparing multifunctional polymers by thiol-bromo click polymerization with a rational molecular design.
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