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Multi-walled carbon nanotubes covalently functionalized by axially coordinated metal-porphyrins： Facile syntheses and temporally dependent optical performance

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分类：O626.13[理学—有机化学;理学—化学] TN304.52[电子电信—物理电子学]
作者机构：[1]China-Australia Joint Research Center for Functional Molecular Materials, Scientific Research Academy, Jiangsu University,Zhenjiang 212013, China, [2]China-Australia Joint Research Center for Functional Molecular Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China, [3]Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China, [4]School of Physical Science and Technology, Soochow University, Suzhou 215006, China, [5]Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, [6]Research School of Chemistry, Australian National University, Canberra, ACT2601, Australia
相关基金：Financial support from the National Natural Science Foundation of China （Nos. 51432006, 50925207, and 51172100）, the Ministry of Science and Technology of China for the International Science Linkages Program （No. 2011DFG52970）, the Ministry of Education of China for the Changjiang Innovation Research Team （No. IRT14R23）, the Ministry of Education and the State Administration of Foreign Experts Affairs for the 111 Project （No. B13025）, 100 Talents Program of CAS, and Jiangsu Innovation Research Team are gratefully acknowledged. M. G. H., M. P. C., and C. Z. thank the Australian Research Council （ARC） for support.

作者： Aijian Wang[1,2,3], Jingbao Song[1], Zhipeng Huang[1], Yinglin Song[4], Wang Yu[1], Huanli Dong[5], Wenping Hu[5], Marie P. Cifuentes[6], Mark G. Humphrey[6], Long Zhang[3], Jianda Shao[3], Chi Zhang[2,3,6]

关键词：三阶非线性光学性能, 多壁碳纳米管, 金属卟啉, 轴向配位, 简易合成, 功能化, 时间依赖, 纳米复合材料, metal-porphyrin,axially coordinated,multi-walled carbon nanotubes,facile syntheses,optical performance,cycloaddition

中文摘要：

向轴的方向协调了 metal-porphyrin-functionalized 多围的碳 nanotube (MWCNT ) nanohybrids 经由二条不同合成途径(一个壶 1,3-dipolar cycloaddition 反应和那深奥 1,3-dipolar cycloaddition 由亲核的替换跟随了的一条逐步的途径) 被准备，并且通过分光镜的技术描绘了。到 MWCNT 的表面的听卟啉的附件显著地改进他们处理的溶解度和容易。协调的这些向轴的方向(5,10,15,20-tetraphenylporphyrinato ) 锡(IV )(SnTPP )-MWCNTs 展览重要荧光熄灭。结果的 nanohybrids 的第三顺序的非线性的光性质被与毫微秒和微微秒激光脉搏在 532 nm 使用 Z 扫描技术学习。当分别地，毫微秒或微微秒脉搏被采用时，结果证明 nanohybrids 展出重要反向的可饱和的吸收或可饱和的吸收。在毫微秒政体的改进非线性的吸收在继续到 nanohybrids 上被观察并且被归功于到 MWCNT 和化学上依附的金属卟啉的突出的性质的联合。

英文摘要：

Axially coordinated metal-porphyrin-functionalized multi-walled carbon nanotube （MWCNT） nanohybrids were prepared via two different synthetic approaches （a one-pot 1,3-dipolar cycloaddition reaction and a stepwise approach that involved 1,3-dipolar cycloaddition followed by nucleophilic substitution）, and characterized through spectroscopic techniques. Attachment of the tin porphyrins to the surface of the MWCNTs significantly improves their solubility and ease of processing. These axially coordinated （5,10,15,20-tetraphenylporphyrinato）tin（Ⅳ）（SnTPP）- MWCNTs exhibit significant fluorescence quenching. The third-order nonlinear optical properties of the resultant nanohybrids were studied by using the Z-scan technique at 532 nm with both nanosecond and picosecond laser pulses. The results show that the nanohybrids exhibit significant reverse saturable absorption or saturable absorption when nanosecond or picosecond pulses, respectively, are employed. Improvement in the nanosecond regime nonlinear absorption is observed on proceeding to the nanohybrids and is ascribed to a combination of the outstanding properties of MWCNTs and the chemically attached metal-porphyrins.

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