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Open AccessCCS ChemistryRESEARCH ARTICLES23 Aug 2024Hydrogen-Bonded Supramolecular Network Triggers High-Efficiency Blue Room-Temperature Phosphorescence Sen Wu, Tao Wang and Eli Zysman-Colman Sen Wu , Tao Wang and Eli Zysman-Colman Cite this: CCS Chemistry. 2024;0:1–28https://doi.org/10.31635/ccschem.024.202404623 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail Hydrogen bonding has been employed to suppress non-radiative decay in organic compounds that show room temperature phosphorescence (RTP); however, the small number of structurally diverse examples makes it unclear how general this strategy is to turn on RTP. In this study, we report highly efficient blue RTP from 4,4′,4′′-nitrilotribenzoic acid ( TPA-CO2H) in five structurally and chemically distinct hydrogenbonded supramolecular networks. In doped films in polyvinyl alcohol (PVA) the phosphorescence quantum yield and lifetime (ΦPh and τPh) reach 52% and 275 ms. Boric acid can also be used to turn on RTP, and the performance changes significantly with the sample is heated beyond the dehydration temperature of this host where there is a 14-fold enhancement in the ΦPh after heat treatment. Blue RTP similar to that observed in PVA was also observed using granulated sugar, gelatine, and paper as host matrices. This work elucidates for the first time the role and the generality of hydrogen bonding in activating efficient blue RTP and examines how the choice of hydrogen bonding host influences RTP performance. We further demonstrate how the emission color can be tuned by co-doping the films with Rhodamine 6G. Download figure Download PowerPoint Previous articleNext article FiguresReferencesRelatedDetails Issue AssignmentNot Yet AssignedSupporting Information Copyright & Permissions© 2024 Chinese Chemical Society Downloaded 0 times PDF downloadLoading ...
Wu et al. (Sat,) studied this question.