80电影天堂网,少妇高潮一区二区三区99,jαpαnesehd熟女熟妇伦,无码人妻精品一区二区蜜桃网站

當(dāng)前位置:群英聚首 > 論文著作 > 正文
High efficiency grafting of halloysite nanotubes by using π-conjugated polyfluorenes via “click” chemistry
來源:張海磊副教授個(gè)人網(wǎng)站 發(fā)布日期:2018-12-14
作者:Hailei Zhang, Xiaoyan Zhu, Yonggang Wu,* Hongzan Song,* Xinwu Ba.
關(guān)鍵字:halloysite nanotubes, “click”chemistry, conjugated polyfluorenes, fluorescence.
論文來源:期刊
具體來源:Journal of Materials Science
發(fā)表時(shí)間:2015年

New hybrid halloysite nanotubes (HNTs) were obtained by grafting conjugated

polyfluorenes (PFs) onto the surface via “click” chemistry. The hybrid material can be dispersed in organic solvent such as dichloromethane, and exhibits intense blue emission peaked at 448 nm. The absorption and emission spectra of the HNTs show distinct bathochromic shifts compared to PFs, which can be attributed to the extended π-conjugation as a result of the cycloaddition of azide and alkyne groups. The changes of the spectra also show that the PFs were grafted onto the HNTs through chemical bonds. Thermal gravimetric analyzer (TGA) data shows one more significant result, the grafting degree of the HNTs is 150 %, which means that a high mass ratio of PF polymers was grafted onto the HNTs. Furthermore, characterizations by infrared (IR), nuclear magnetic resonance (NMR) and X-ray photoelectron spectroscopy (XPS) also support the conclusion. The combination of HNTs with conjugated polymers will lead to a new generation of donor-acceptor nanohybrid materials which are promising in application in photoelectric fields.





Copyright © 2005 Polymer.cn All rights reserved
中國聚合物網(wǎng) 版權(quán)所有
經(jīng)營性網(wǎng)站備案信息

京公網(wǎng)安備11010502032929號

工商備案公示信息

京ICP證050801號

京ICP備12003651號