We report ahighly efficient dopant-matrix afterglow system enabled by TADF mechanism to realizea fterglow quantum yields of 60-70 %, which features am oderate rate constant for reverse intersystem crossing (k RISC )t os imultaneously improve afterglow quantum yields and maintain afterglow emission lifetime.D ifluoroboron b-diketonate (BF 2 bdk) compounds are designed with multiple electrondonating groups to possess moderate k RISC values and are selected as luminescent dopants.T he matrices with carbonyl functional groups such as phenyl benzoate (PhB) have been found to interact with and perturb BF 2 bdk excited states by dipole-dipole interactions and thus enhance the intersystem crossing of BF 2 bdk excited states.T hrough dopant-matrix collaboration, the efficient TADF-type afterglow materials have been achieved to exhibit excellent processability into desired shapes and large-area films by melt casting, as well as aqueous afterglow dispersions for potential bioimaging applications.

Transparent omniphobic or anti‐smudge coatings with glass‐like wear resistance and polymer‐like bendability have many potential applications but there are no reports of such materials. We Report herein a molecular composite possessing these properties. The composite is prepared via the photo‐initiated ring‐opening polymerization of the epoxide rings of glycidyloxypropyl polyhedral silsesquioxane (GPOSS). While the desired hardness is provided by the silica core, the flexibility is imparted by the glycidyloxypropyl network. Oil and water repellency is achieved without adversely affecting the other properties by incorporating a low‐surface‐tension liquid lubricant poly(dimethyl siloxane). On the final coating, various organic solvents and water readily and cleanly glide, while complex fluids, such as ink and paint facilely contract. These properties are retained after an initially flat coating sample is rolled into a U‐shape 500 times or is abraded with steel wool.

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In organic systems, it is very challenging to simultaneously achieve long afterglow lifetimes (τAG) and high afterglow efficiency (ΦAG). Here, luminescent dopants which feature a small rate of phosphorescence decay (kP) and modest rate of reverse intersystem crossing (kRISC) are designed and knr + kq values (nonradiative decay and quenching) of triplet excited states are suppressed by all means that include increasing molecular rigidity of luminescent dopants, screening organic matrices to strongly inhibit intramolecular motions of luminescent dopants, and deuteration of the luminescent dopants. Organic matrices are selected with large dipole moments to stabilize the singlet excited states of luminescent dopants via dipole–dipole interactions, reduce singlet–triplet splitting energy, and thus enhance ΦISC, leading to significant population of triplet excited states. Thermally activated delayed fluorescence mechanism is also used with modest kRISC to harvest triplet energies, significantly improve ΦAG to 64%, and maintain long τAG > 1.0 s. The obtained materials display intense afterglow brightness, excellent processability, and temperature‐sensing function.