当前位置：
X-MOL 学术
›
J. Polym. Sci.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Functionalization of polyfluorene-wrapped carbon nanotubes using thermally cleavable side-chains
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2022-08-12 , DOI: 10.1002/pol.20220362 Dialia Ritaine 1 , Alex Adronov 1
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2022-08-12 , DOI: 10.1002/pol.20220362 Dialia Ritaine 1 , Alex Adronov 1
Affiliation
|
The length and nature of side-chains in conjugated polymer-wrapped carbon nanotubes can impact their conductivity. We investigate functionalization of polyfluorene-single-walled carbon nanotubes (SWNT's) using cleavable side-chains that are removable post-processing. The triethylene glycol side-chains contain a thermally cleavable carbonate linker. Upon heating the films to 170 °C, the conductivity increased, reaching a plateau of (2.0 ± 0.1) × 10−2 S/m after 16 h, compared to (1.0 ± 0.2) × 10−3 S/m for the control sample. UV–Vis–near-infrared (NIR) and Raman spectroscopy show well-dispersed SWNT samples and confirm that the heating treatment did not damage the nanotubes. Functionalization using longer polyethylene glycol side-chains was also investigated. After heating, cleavage of the longer chains resulted in conductivity of (8.2 ± 1.6) × 10−4 S/m compared to (8.1 ± 1.4) × 10−5 S/m for the control. UV–Vis–NIR and Raman spectroscopy showed well-dispersed SWNT samples and confirmed that the nanotubes were not damaged. Finally, we investigate dispersions in triethylene glycol monomethyl ether and tetraethylene glycol dimethyl ether, generally deemed “green” solvents. Polymer-SWNT complexes functionalized with shorter side-chains did not form stable dispersions, resulting in precipitation of the nanotubes upon standing for a few minutes after the removal of tetrahydrofuran, while complexes functionalized with longer side-chains formed stable dispersions.
中文翻译：
使用热裂解侧链对聚芴包裹的碳纳米管进行功能化
共轭聚合物包裹的碳纳米管中侧链的长度和性质会影响它们的导电性。我们使用可去除后处理的可裂解侧链研究聚芴单壁碳纳米管 (SWNT) 的功能化。三甘醇侧链包含一个可热裂解的碳酸酯接头。将薄膜加热至 170 °C 后，电导率增加，16 小时后达到 (2.0 ± 0.1) × 10 −2 S/m 的稳定水平，而 (1.0 ± 0.2) × 10 −3 对照样品的 S/m。紫外-可见-近红外 (NIR) 和拉曼光谱显示 SWNT 样品分散良好，并证实热处理不会损坏纳米管。还研究了使用更长的聚乙二醇侧链的功能化。加热后，较长链的裂解导致电导率为 (8.2 ± 1.6) × 10 −4 S/m，而电导率为 (8.1 ± 1.4) × 10 −5 S/m 为对照。UV-Vis-NIR 和拉曼光谱显示 SWNT 样品分散良好，并证实纳米管没有损坏。最后，我们研究了三乙二醇单甲醚和四乙二醇二甲醚（通常被认为是“绿色”溶剂）中的分散体。用较短的侧链功能化的聚合物-SWNT 复合物不能形成稳定的分散体，导致在去除四氢呋喃后静置几分钟后纳米管沉淀，而用较长的侧链功能化的复合物形成稳定的分散体。
更新日期：2022-08-12
中文翻译：
使用热裂解侧链对聚芴包裹的碳纳米管进行功能化
共轭聚合物包裹的碳纳米管中侧链的长度和性质会影响它们的导电性。我们使用可去除后处理的可裂解侧链研究聚芴单壁碳纳米管 (SWNT) 的功能化。三甘醇侧链包含一个可热裂解的碳酸酯接头。将薄膜加热至 170 °C 后，电导率增加，16 小时后达到 (2.0 ± 0.1) × 10 −2 S/m 的稳定水平，而 (1.0 ± 0.2) × 10 −3 对照样品的 S/m。紫外-可见-近红外 (NIR) 和拉曼光谱显示 SWNT 样品分散良好，并证实热处理不会损坏纳米管。还研究了使用更长的聚乙二醇侧链的功能化。加热后，较长链的裂解导致电导率为 (8.2 ± 1.6) × 10 −4 S/m，而电导率为 (8.1 ± 1.4) × 10 −5 S/m 为对照。UV-Vis-NIR 和拉曼光谱显示 SWNT 样品分散良好，并证实纳米管没有损坏。最后，我们研究了三乙二醇单甲醚和四乙二醇二甲醚（通常被认为是“绿色”溶剂）中的分散体。用较短的侧链功能化的聚合物-SWNT 复合物不能形成稳定的分散体，导致在去除四氢呋喃后静置几分钟后纳米管沉淀，而用较长的侧链功能化的复合物形成稳定的分散体。
京公网安备 11010802027423号