A water-soluble π-conjugated polymer with up to 100 mg.mL-1 solubility

被引：41
作者：
Wang, Huiping
Lu, Ping
Wang, Baoling
Qiu, Song
Liu, Meirong
Hanif, Muddasir
Cheng, Gang
Liu, Shiyong
Ma, Yuguang
机构：
[1] Jilin Univ, Minist Educ, Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China
[2] Jilin Univ, Natl Lab Integrated Optoelect, Changchun 130023, Peoples R China
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2007年 / 28卷 / 16期
关键词：
pi-conjugated polymers; fluorescence; OLED; quaternization; water-soluble polymer;
D O I：
10.1002/marc.200700221
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A cationic water-soluble polyfluorene (P2) containing a high density of tetraalkylammonium side chains in polymer backbone was synthesized and characterized. The polymer shows excellent water solubility up to 100 mg center dot mL(-1) as well as high photoluminescence (PL) quantum yield of 44% in water. The relatively high cationic density and appropriate side chain length of the polymer are the key factors to achieve such high water solubility. The reduction potential of P2 is decreased as compared with its neutral polymer, reflecting the enhanced electron injection abilities. The standard NPB/Alq(3) device using such a polymer as the electron injection layer shows nearly three-fold enhancement in the electroluminescence (EL) efficiency.
引用
收藏
页码：1645 / 1650
页数：6
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