Synthesis of Polyethyleneimines Protonated by 1-Pyrenesulfonic Acid and Their Usability for Solublization of Single-walled Carbon Nanotube
Synthesis of Polyethyleneimines Protonated by 1-Pyrenesulfonic Acid and Their Usability for Solublization of Single-walled Carbon Nanotube
复制标题
1-芘磺酸质子化聚乙烯亚胺的合成及其用于溶解单壁碳纳米管的用途
DOI：
10.1016/j.matlet.2018.10.008
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
A. Wang
中科院分区：
文献类型：
--
作者：
I. Yamaguchi;M. Iwasaki;A. Wang
1-芘磺酸（Pyr-SO 3 H）与支化聚乙烯亚胺（PEI）以1：1、1：2、1：3和1：4的摩尔比反应产生具有磺基芘侧基的PEI，分别表示为Pyr-PEI（1：1）、Pyr-PEI（1：2）、Pyr-PEI（1：3）和Pyr-PEI（1：4）;质子化程度取决于Pyr-SO 3 H/PEI的进料比。用Pyr-PEI处理单壁碳纳米管（SWNT），导致芘基粘附在SWNT表面，并产生可溶性复合材料SWNT-Pyr-PEI。UV-vis和光致发光（PL）测试表明，SWNT-Pyr-PEI中SWNT的吸光度和PL强度随PEI单元含量的增加而增加。基于从PEI单元到SWNT的电子迁移，SWNT-Pyr-PEI的电导率由于n-掺杂而高于原始SWNT的电导率。
Reaction of 1-pyrenesulfonic acid (Pyr-SO3H) with branched polyethyleneimine (PEI) in molar ratios of 1:1, 1:2, 1:3, and 1:4 produced PEIs with sulfopyrenyl pendant groups, denoted as Pyr-PEI(1:1), Pyr-PEI(1:2), Pyr-PEI(1:3), and Pyr-PEI(1:4), respectively; the degrees of protonation depended on the feed ratios of Pyr-SO3H/PEI. Treatment of single-walled carbon nanotube (SWNT) with Pyr-PEIs caused adhering of the pyrenyl group on the SWNT surface and produced soluble composites, SWNT-Pyr-PEIs. UV–vis and photoluminescence (PL) measurements indicated that the absorbance and PL intensity corresponding to SWNT in SWNT-Pyr-PEIs increased with increasing the content of the PEI unit in the composites. The electrical conductivities of SWNT-Pyr-PEIs were higher than that of pristine SWNT owing to n-doping, based on electron migration from the PEI unit to the SWNT.