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Photocurrent generation of nanofibers constructed using a complex of a gelator and a fullerene derivative

机译：使用胶凝胶和富勒烯衍生物的复合物构成的纳米纤维的光电流产生

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摘要

A carboxylic acid derivative (C8CBTA) with benzothiadiazole as an electron-withdrawing unit and N-octyl 3-amidocarbazole as an electron donor was designed and synthesized to obtain a gelator with a longer absorption wavelength. C8CBTA could form red gels in some aromatic solvents and could self-assemble into thin nanofibers in gel phases. The changes in UV-vis absorption spectra during gelation suggested J-aggregate stacking between aromatic moieties, and the IR spectrum of the xerogel film revealed the intermolecular hydrogen bonding between amide groups and the formation of dimers between carboxyl groups in gel phases. Thus, the synergistic effect of pi-pi interaction and hydrogen bonding induced 1D stacking. The C8CBTA gel exhibited a maximal absorption peak at 520 nm and emitted weak near-infrared fluorescence at a maximum of 700 nm because of the strong intramolecular charge transfer. A fullerene derivative that contains an imidazole unit as a hydrogen bond acceptor was synthesized and used as an electron acceptor in constructing a photo-induced electron-transfer two-component gel with C8CBTA. Fullerene derivatives also formed 1D stacking in the two-component gel. Moreover, the xerogel film, which served as the active layer, generated a larger amount of photocurrent compared with the disordered film under light irradiation.
机译：设计并合成了作为电子供体作为电子抽出单元和N-辛基3-酰胺咔唑的羧酸衍生物（C8CBTA），以获得具有较长吸收波长的凝胶器。 C8CBTA可以在一些芳族溶剂中形成红凝胶，并且可以在凝胶相中自组装成薄的纳米纤维。凝胶化期间UV-Vis吸收光谱的变化表明芳族部分之间的J-骨料堆叠，Xerogel膜的IR光谱显示酰胺基团之间的分子间氢键合，并在凝胶相中形成羧基之间的二聚体。因此，PI-PI相互作用和氢键诱导的1D堆叠的协同效应。 C8CBTA凝胶在520nm处表现出最大吸收峰，并且由于强烈的分子内电荷转移，最大为700nm的近红外荧光弱。合成含有咪唑单元作为氢键受体的富勒烯衍生物并用作电子受体，用于用C8CBTA构建光诱导的电子转移双组分凝胶。富勒烯衍生物也在双组分凝胶中形成1D堆叠。此外，与在光照射下的无序膜相比，用作有源层的Xerogel膜产生较大量的光电流。

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  • 来源
    《RSC Advances》 |2015年第92期|共9页
  • 作者

    Xue Pengchong; Wang Panpan; Yao Boqi; Sun Jiabao; Gong Peng; Zhang Zhenqi; Lu Ran;

  • 作者单位

    Jilin Univ Coll Chem State Key Lab Supramol Struct &

    Mat Changchun 130023 Peoples R China;

    Jilin Univ Coll Chem State Key Lab Supramol Struct &

    Mat Changchun 130023 Peoples R China;

    Jilin Univ Coll Chem State Key Lab Supramol Struct &

    Mat Changchun 130023 Peoples R China;

    Jilin Univ Coll Chem State Key Lab Supramol Struct &

    Mat Changchun 130023 Peoples R China;

    Jilin Univ Coll Chem State Key Lab Supramol Struct &

    Mat Changchun 130023 Peoples R China;

    Jilin Univ Coll Chem State Key Lab Supramol Struct &

    Mat Changchun 130023 Peoples R China;

    Jilin Univ Coll Chem State Key Lab Supramol Struct &

    Mat Changchun 130023 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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