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<p>Utilizing various aromatic dicarbaldehyde linkers, (1,1′-biphenyl)-4,4′-dicarbaldehyde (L<sub>B</sub>), 4,4′-(phenylimino)dibenzaldehyde (L<sub>N</sub>), and anthracene-9,10-dicarbaldehyde (L<sub>A</sub>), this study achieved controlled assembly of three exohedral metallofullerenes (ExMFs) based on novel regioisomeric C<sub>70</sub>@(Cu<sub>3</sub>)<sub>4</sub> with eclipsed, partly eclipsed, and staggered configurations, realizing regioselective coordination at the polar zones of C<sub>70</sub> and unique inherent chirality. They characterize a wave-like sheet, a dimer of two C<sub>70</sub>@(Cu<sub>3</sub>)<sub>4</sub> units, and even interpenetrated metallofullerene frameworks (MFFs) featuring dia net. Their intense absorptions across the UV-Vis ranges relate to charge transfer of Cu(I)→π*(C<sub>70</sub>) and enhanced π→π* from dicarbaldehyde ligands to the C<sub>70</sub> ball with the increase in the conjugation degree of dicarbaldehyde ligands. Our findings highlight the potential of dicarbaldehyde ligands for new cuprofullerene-based polymers, and the successful synthesis of these regioisomeric C<sub>70</sub>@(Cu<sub>3</sub>)<sub>4</sub> marks a significant advancement in fullerene chemistry, with implications for their applications in photofuntional materials.</p>

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Symmetry-driven assembly of regioisomeric dodecanuclear C70@(Cu3)4 cuprofullerenes directed by aromatic dicarbaldehyde ligands

  • 期刊论文

  • 发表日期：

    2026年1月4日

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  • Jia-Yi Wu,
  • Xian-Yun Tao,
  • Yi-Jing Zheng,
  • Ju-Rong Yang,
  • Si-Rui Deng,
  • Shao-Fei Ni,
  • Shun-Ze Zhan,
  • Dan Li

摘要

Utilizing various aromatic dicarbaldehyde linkers, (1,1′-biphenyl)-4,4′-dicarbaldehyde (LB), 4,4′-(phenylimino)dibenzaldehyde (LN), and anthracene-9,10-dicarbaldehyde (LA), this study achieved controlled assembly of three exohedral metallofullerenes (ExMFs) based on novel regioisomeric C70@(Cu3)4 with eclipsed, partly eclipsed, and staggered configurations, realizing regioselective coordination at the polar zones of C70 and unique inherent chirality. They characterize a wave-like sheet, a dimer of two C70@(Cu3)4 units, and even interpenetrated metallofullerene frameworks (MFFs) featuring dia net. Their intense absorptions across the UV-Vis ranges relate to charge transfer of Cu(I)→π*(C70) and enhanced π→π* from dicarbaldehyde ligands to the C70 ball with the increase in the conjugation degree of dicarbaldehyde ligands. Our findings highlight the potential of dicarbaldehyde ligands for new cuprofullerene-based polymers, and the successful synthesis of these regioisomeric C70@(Cu3)4 marks a significant advancement in fullerene chemistry, with implications for their applications in photofuntional materials.