This study presents a polymeric supramolecular column-based artificial light-harvesting system inspired by the natural light-harvesting mechanisms of purple photosynthetic bacteria. The system, composed of a discotic liquid crystalline polymer (PTCS) as the donor and Nile red (Nir) as the acceptor, achieves an ultrahigh donor/acceptor ratio of 20,000:1 and an antenna effect exceeding 100. The modular columnar design facilitates efficient and controllable energy transfer (ET) pathways, enabling dynamic full-color tunable emission for information encryption applications. The ET efficiency is enhanced by the liquid crystallinity and intercolumnar correlation within the supramolecular columns, which optimize the ET pathways. Additionally, the system demonstrates spatiotemporal regulation in information encryption, allowing for multi-level information storage and self-erasing capabilities. This work highlights the potential of supramolecular columns in achieving efficient and controllable light-harvesting systems.This study presents a polymeric supramolecular column-based artificial light-harvesting system inspired by the natural light-harvesting mechanisms of purple photosynthetic bacteria. The system, composed of a discotic liquid crystalline polymer (PTCS) as the donor and Nile red (Nir) as the acceptor, achieves an ultrahigh donor/acceptor ratio of 20,000:1 and an antenna effect exceeding 100. The modular columnar design facilitates efficient and controllable energy transfer (ET) pathways, enabling dynamic full-color tunable emission for information encryption applications. The ET efficiency is enhanced by the liquid crystallinity and intercolumnar correlation within the supramolecular columns, which optimize the ET pathways. Additionally, the system demonstrates spatiotemporal regulation in information encryption, allowing for multi-level information storage and self-erasing capabilities. This work highlights the potential of supramolecular columns in achieving efficient and controllable light-harvesting systems.