Pure organic room-temperature phosphorescence (RTP) materials are useful for photoelectric, biochemical devices and bioimaging sensors. In the last few years, dynamic covalent chemistry has aroused substantial attention as it offers a way to create intelligent materials with feedback and response functions.<br/>Through Diels-Alder reaction, a [4+2] cycloaddition reaction between dienes and dienophiles, three polymers are synthesized and can be reversibly transformed by thermally reversible dynamic covalent bonds. All polymers show decent RTP emission with different colors. For poly-Br-An solid, the absolute phosphorescence quantum yield reaches up to 12%. This study provides a new method to rationally design and synthesize emission-tunable organic RTP materials via dynamic covalent bonds.<br/>Two polymers are synthesized through supramolecular-mediated [4+4] photocyclodimerization of anthracene, which can be reversibly transformed by photoreversible dynamic covalent bonds. The polymers show decent phosphorescence emission with different colors at room temperature, achieving the conversion between blue phosphorescence and cyan phosphorescence. This study provides a novel method for designing and synthesizing pure organic RTP materials with tunable emissions through dynamic covalent bonds

Tunable-emission amorphous room-temperature phosphorescent polymers based on dynamic covalent bonds

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