Engineering Ultrahigh‐Contrast Photoactivated Room‐Temperature Phosphorescence With a Robust and Universal Ureido‐Functionalized Siloxane Network
Abstract
ABSTRACT Photoactivated room‐temperature phosphorescence (pRTP) host‐guest systems have received widespread attention due to their non‐invasive photoresponsiveness, high reversibility, and color tunability. However, traditional polymer hosts often lack efficient photoactivation and sufficient stability due to passive oxygen penetration. Herein, we report a ureido‐functionalized siloxane network derived from the hydrolysis of γ‐ureidopropyltriethoxysilane (UPTES), which serves as a universal photoactivation platform for constructing pRTP systems via doping with various phosphorescent guest molecules. The UPTES‐based systems can achieve superior photoactivation efficiency through the UV‐induced oxygen consumption, boosting phosphorescence intensity by up to approximately 2100‐fold and extending lifetime by approximately 65‐fold. This ultrahigh contrast originates from the strongly active oxygen‐trapping capability of the ureido groups within the siloxane network, which is crucial for establishing the initial ‘off’ state of guest phosphorescence via efficient oxygen‐mediated quenching of triplet excitons. Notably, owing to the dense and robust siloxane network, these systems show excellent stability, maintaining efficient pRTP performance for at least 90 days even in aqueous solutions, organic reagents, or concentrated acid. This work not only presents an ultrastable host matrix for designing ultrahigh‐contrast pRTP materials, but also enables the on‐demand customization of pRTP systems for advanced multi‐level information encryption.
Article Details
Authors (11)
Ya Ting Gao
Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai P. R. China
Ying Zhang
Bin Bin Chen
Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai P. R. China
Li Ya Liang
Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai P. R. China
Ming Jie Ye
Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai P. R. China
Meng Qi Zhao
Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai P. R. China
Xiao Yu Zhang
Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai P. R. China
Fei Yang Xue
Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai P. R. China
Jian Lv
Da Wei Li
Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai P. R. China
Xiang Ma
Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated-Materials, College of Chemistry