Dynamically Modulated Ultralong Organic Phosphorescent Materials: Achieving Wide‐Range Lifetime Tunability for Multicolor Data Storage

ABSTRACT

Ultralong organic phosphorescence (UOP) materials have attracted growing research attention in the field of optical information storage, anti‐counterfeiting, and data encryption owing to their unique long‐lived emission characteristics. However, the widespread application of UOP‐based information storage is currently constrained by two main limitations: the dominant binary (on/off) encoding mode with limited information capacity, and the lack of high‐precision, facile data‐writing approaches compatible with scalable fabrication. In this work, we develop a time‐resolved information storage strategy based on widely and precisely tunable UOP lifetimes, which is realized by rationally controlling the polymerization degree of the polymer host. Combining with digital processing (DLP) 3D printing method, the photosensitive materials 3‐TBAOF@HEA:AA and 4‐TBAOF@HEA:AA are designed and developed with tunable UOP lifetimes from 4.6 to 1577.50 ms. Leveraging this tunability of broad lifetime, we demonstrate time‐dependent information storage including multicolor information display and direct photopatterning on flexible 2D thin films. The 3D‐printable UOP system with precisely controllable phosphorescence lifetimes provides a viable material platform for constructing high‐level data security storage devices.