Doping-Dependent Energy Transfer from Conjugated Polyelectrolytes to (6,5) Single-Walled Carbon Nanotubes
Doping-Dependent Energy Transfer from Conjugated Polyelectrolytes to (6,5) Single-Walled Carbon Nanotubes
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DOI：
10.1021/acs.jpcc.9b07291
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发表时间：
2019-08
期刊：
影响因子：
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通讯作者：
Merve Balcı Leinen;Felix J. Berger;Patrick Klein;Markus Mühlinghaus;N. F. Zorn;Simon Settele;S. Allard;U. Scherf;J. Zaumseil
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文献类型：
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作者：
Merve Balcı Leinen;Felix J. Berger;Patrick Klein;Markus Mühlinghaus;N. F. Zorn;Simon Settele;S. Allard;U. Scherf;J. Zaumseil
共轭聚合物与单壁碳纳米管（SWNTs）具有很强的相互作用。这使得特定半导体单壁碳纳米管在有机溶剂中的选择性分散和聚合物介导的能量转移到纳米管中，然后在近红外中发射。具有离子侧链的共轭聚电解质可以为这些纳米管/聚合物杂化物增加更多的功能，例如在极性溶剂（例如甲醇）中的分散性和自掺杂。在这里，我们展示并研究了从一系列共轭聚合物到预选（6,5）SWNTs的能量转移，聚合物和纳米管的光学跃迁之间具有不同的光谱重叠。我们发现有证据表明，包裹在纳米管周围的聚合物增加了主链的平面化。此外，阴离子共轭聚电解质和（6,5）SWNTs的杂化物的环境p掺杂阻碍了能量传递，这与阳离子聚电解质不同。通过加入一种温和的还原剂，从而去除p掺杂，使其能…
Conjugated polymers exhibit strong interactions with single-walled carbon nanotubes (SWNTs). These enable the selective dispersion of specific semiconducting SWNTs in organic solvents and polymer-mediated energy transfer to the nanotubes followed by emission in the near-infrared. Conjugated polyelectrolytes with ionic side-chains can add further functionalities to these nanotube/polymer hybrids such as dispersibility in polar solvents (e.g., methanol) and self-doping. Here, we demonstrate and investigate energy transfer from a range of conjugated polymers to preselected (6,5) SWNTs with varying spectral overlap between the optical transitions of the polymer and nanotube. We find evidence for increased backbone planarization of the polymers wrapped around the nanotubes. Furthermore, ambient p-doping of hybrids of anionic conjugated polyelectrolytes and (6,5) SWNTs blocks energy transfer in contrast to cationic polyelectrolytes. By addition of a mild reducing agent, thus removing the p-doping, the energy tr...