Herein, perylene bisimide supramolecular (PDI) and graphene quantum dots (GQDs) were successfully layer-by-layer assembled via electrostatic interaction. The apparent rate constant of photocatalytic reaction for phenol degradation of GQDs/PDI-14 % (0.018 min⁻¹) was 4.73 times as high as nano PDI under visible light. Besides, the rate of H₂ production of GQDs/PDI-14 % (1.6 mmol g⁻¹· h⁻¹) was 1.88 times over that of pure PDI. GQDs is helpful for the electrons delocalization via π-π action with PDI. Moreover, the quantum confinement effect of GQDs promotes electron transfer from GQDs to PDI, which helps the conduction band of PDI shift to more negative position and further enhance the reduction ability of PDI. The work may afford some interesting ideas for designing efficient quantum dots-modified supramolecular organic photocatalysts.

本文中，per二酰亚胺超分子（PDI）和石墨烯量子点（GQD）通过静电相互作用成功地逐层组装。在可见光下，GQDs / PDI-14％（0.018 min ^-1）的苯酚降解的光催化反应的表观速率常数是纳米PDI的4.73倍。此外，GQDs / PDI-14％的H ₂产生率（1.6 mmol g ^-1 ·h ^-1）是纯PDI的1.88倍。GQD通过PDI通过π-π作用有助于电子离域。此外，GQDs的量子约束效应促进了电子从GQDs转移到PDI，这有助于PDI的导带转移到更负的位置，并进一步增强PDI的还原能力。该工作可能为设计有效的量子点改性的超分子有机光催化剂提供一些有趣的想法。