Tunable‐Emission Amorphous Room‐Temperature Phosphorescent Polymers Based on Thermoreversible Dynamic Covalent Bonds

Abstract

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. Through a Diels–Alder reaction, a [4+2] cycloaddition reaction between dienes and dienophiles, three polymers were synthesized that can be reversibly transformed by thermally reversible dynamic covalent bonds. All polymers show decent RTP emission with different colors. For the poly‐Br‐An solid, the absolute phosphorescence quantum yield reaches up to 12 %. This study provides a new method for the rational design and synthesis of tunable‐emission organic RTP materials via dynamic covalent bonds.

Stimuli‐Responsive Polymers with Room‐Temperature Phosphorescence

“… Molecular orbital energy diagram to obtain tunable phosphorescent emission achieved by thermoreversible dynamic covalent at room‐temperature [29] . Copyright 2020, John Wiley and Sons.…”

“…Since thermally reversible interconversion was the main attribution of temperature‐responsive materials, three kinds of pure organic polymers with thermoreversible dynamic properties were successfully designed by Ma et al [29] . The three polymers constructed by Diels‐Alder reaction of dienes and dienophiles were interchangeable based on the thermally reversible dynamic covalent bonds (Figure 7).…”

Activating Room-Temperature Phosphorescence of Organic Luminophores via External Heavy-Atom Effect and Rigidity of Ionic Polymer Matrix

“…Compared with fluorescent materials, materials with room-temperature phosphorescence (RTP) have received special attention for their larger Stokes shift and longer lifetime (6)(7)(8)(9)(10)(11)(12)(13). These advantages promote their applications in the fields such as molecular switches (14)(15)(16)(17)(18), organic light-emitting diodes (OLEDs) (19)(20)(21)(22)(23), anticounterfeiting (24) and bioimaging (25). As pure organic molecules typically emit phosphorescence only at low temperature (e.g., 77 K) and under inert conditions (26,27), traditional phosphorescent materials focus on inorganic and organometallic systems (28,29), which normally rely on noble metals like iridium and platinum to promote the intersystem crossing (ISC) process.…”

Activating Room-Temperature Phosphorescence of Organic Luminophores via External Heavy-Atom Effect and Rigidity of Ionic Polymer Matrix

“…Compared with fluorescent materials, materials with room-temperature phosphorescence (RTP) have received special attention for their larger Stokes shift and longer lifetime (6)(7)(8)(9)(10)(11)(12)(13). These advantages promote their applications in the fields such as molecular switches (14)(15)(16)(17)(18), organic light-emitting diodes (OLEDs) (19)(20)(21)(22)(23), anticounterfeiting (24) and bioimaging (25). As pure organic molecules typically emit phosphorescence only at low temperature (e.g., 77 K) and under inert conditions (26,27), traditional phosphorescent materials focus on inorganic and organometallic systems (28,29), which normally rely on noble metals like iridium and platinum to promote the intersystem crossing (ISC) process.…”