High-efficiency grafting of halloysite nanotubes by using p-conjugatedpolyfluorenes via ‘‘click’’ chemistry
High-efficiency grafting of halloysite nanotubes by using p-conjugatedpolyfluorenes via ‘‘click’’ chemistry
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通过“点击”化学使用 p-共轭聚芴高效接枝埃洛石纳米管
DOI：
10.1007/s10853-015-8993-1
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Xinwu Ba
中科院分区：
文献类型：
--
作者：
Halei Zhang;Xiaoyan Zhu;Yonggang Wu;Hongzan Song;Xinwu Ba
通过“点击”化学将共轭聚芴（PF）接枝到表面，获得了新型杂化埃洛石纳米管（HNT）。该杂化材料可以分散在二氯甲烷等有机溶剂中，并在 448 nm 处呈现出强烈的蓝色发射峰。与 PF 相比，HNT 的吸收和发射光谱显示出明显的红移，这可归因于叠氮基和炔基的环加成导致的扩展π-共轭。光谱的变化还表明PFs通过化学键接枝到HNTs上。热重分析仪数据显示了一个更显着的结果，HNTs 的接枝度为 150%，这意味着 HNTs 上接枝了高质量比的 PF 聚合物。此外，红外、核磁共振和X射线光电子能谱的表征也支持了这一结论。 HNTs与共轭聚合物的结合将产生新一代的供体-受体纳米杂化材料，在光电领域具有广阔的应用前景。
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 extendedπ-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 data show 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, nuclear magnetic resonance, and X-ray photoelectron spectroscopy 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.