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Significant Progress Achieved in Research on Bio-based, High-Efficiency Organic Ultra-long Room-Temperature Phosphorescence at East China University of Science and Technology 2025-03-03 13:07:49 Recently, a team led by Professor Ma Xiang from the School of Chemistry and Molecular Engineering at East China University of Science and Technology, in collaboration with a team led by Researcher Liu Wenbin from the Shanghai Institute of Criminal Science and Technology, has made significant progress in the research on bio-based, high-efficiency organic ultra-long room-temperature phosphorescence. The relevant findings were published in Advanced Materials. It is reported that organic ultra-long room-temperature phosphorescent (OURTP) materials are gradually becoming a focus of attention in many fields due to their excellent properties. However, current OURTP materials still face many bottlenecks that need to be overcome urgently. On the one hand, although crystal engineering enables precise control over material structure, it often requires stringent preparation conditions ； On the other hand, OURTP materials based on petroleum-based polymers have significant shortcomings in terms of degradability and recyclability, making it difficult for them to meet the current demands for sustainable development. Furthermore, although bio-based doping introduces the concept of renewable resources, its stability and intensity in terms of luminescent performance still need to be improved. Therefore, developing OURTP materials that combine stimulus-responsive properties, sustainability, and high performance represents a major challenge that needs to be addressed urgently in this field. Based on this, the team proposed a doping system based on borate-based compounds as guests and the biomass-derived host γ-cyclodextrin (γ-CD), and developed a series of high-performance bio-based OURTP materials with stimulus responsiveness and full-color tunability. By switching different boronic acid-based compounds, the researchers achieved full-color afterglow ranging from blue to red light. Among them, the TPB-CD material exhibits excellent performance in terms of luminescence lifetime and quantum yield, with luminescent properties that far surpass those of the previously reported bio-based OURTP materials. Furthermore, these doping systems exhibit various stimulus-responsive properties, including photoactivation, mechanical response, temperature response, humidity response, and excitation dependence. Experiments show that these sexual energies arise from the synergistic effect of hydrogen bonds, host-guest inclusion, and covalent cross-linking in the doped system. These high-performance OURTP materials with multiple stimulus responses have been successfully applied in the fields of intelligent information storage, information rewriting, and ultraviolet light tracking. The high-performance bio-based OURTP materials developed not only achieve significant advancements in terms of performance but also exhibit unique advantages in terms of environmental sustainability. As a biomass material, γ-cyclodextrin possesses characteristics such as renewability, biodegradability, and environmental friendliness. These properties enable this class of materials to meet high-performance requirements while also adhering to the principles of sustainable development, thus providing new ideas and directions for the development of high-performance luminescent materials in the future.