Abstract
The correlation between molecular packing structure and its room-temperature phosphorescence (RTP), hence rational promotion of the intensity, remains unclear. We herein present racemism enhanced RTP chiral chromophores by 2,2-bis-(diphenylphosphino)-1,1-napthalene (rac-BINAP) in comparison to its chiral counterparts. The result shows that rac-BINAP in crystal with denser density, consistent with a long standing Wallach’s rule, exhibits deeper red RTP at 680 nm than that of the chiral counterparts. The cross packing between alternative R- and S- forms in rac-BINAP crystal significantly retards the bimolecular quenching pathway, triplet-triplet annihilation (TTA), and hence suppresses the non-radiative pathway, boosting the RTP intensity. The result extends the Wallach’s rule to the fundamental difference in chiral-photophysics. In electroluminescence, rac-BINAP exhibits more balanced fluorescence versus phosphorescence intensity by comparison with that of photoluminescence, rendering a white-light emission. The result paves an avenue en route for white-light organic light emitting diodes via full exploitation of intrinsic fluorescence and phosphorescence.
Original language | English |
---|---|
Article number | 2145 |
Journal | Nature Communications |
Volume | 11 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2020 Dec 1 |
ASJC Scopus subject areas
- General Chemistry
- General Biochemistry,Genetics and Molecular Biology
- General Physics and Astronomy
Fingerprint
Dive into the research topics of 'Exploiting racemism enhanced organic room-temperature phosphorescence to demonstrate Wallach’s rule in the lighting chiral chromophores'. Together they form a unique fingerprint.Datasets
-
CCDC 1968819: Experimental Crystal Structure Determination
Wu, X. (Contributor), Huang, C.-Y. (Contributor), Chen, D.-G. (Contributor), Liu, D. (Contributor), Wu, C. (Contributor), Chou, K.-J. (Contributor), Zhang, B. (Contributor), Wang, Y. (Contributor), Liu, Y. (Contributor), Li, E. Y. (Contributor), Zhu, W. (Contributor) & Chou, P.-T. (Contributor), Unknown Publisher, 2020
DOI: 10.5517/ccdc.csd.cc242q98, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccdc.csd.cc242q98&sid=DataCite
Dataset
-
CCDC 1968818: Experimental Crystal Structure Determination
Wu, X. (Contributor), Huang, C.-Y. (Contributor), Chen, D.-G. (Contributor), Liu, D. (Contributor), Wu, C. (Contributor), Chou, K.-J. (Contributor), Zhang, B. (Contributor), Wang, Y. (Contributor), Liu, Y. (Contributor), Li, E. Y. (Contributor), Zhu, W. (Contributor) & Chou, P.-T. (Contributor), Unknown Publisher, 2020
DOI: 10.5517/ccdc.csd.cc242q87, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccdc.csd.cc242q87&sid=DataCite
Dataset
-
CCDC 1968817: Experimental Crystal Structure Determination
Wu, X. (Contributor), Huang, C.-Y. (Contributor), Chen, D.-G. (Contributor), Liu, D. (Contributor), Wu, C. (Contributor), Chou, K.-J. (Contributor), Zhang, B. (Contributor), Wang, Y. (Contributor), Liu, Y. (Contributor), Li, E. Y. (Contributor), Zhu, W. (Contributor) & Chou, P.-T. (Contributor), Unknown Publisher, 2020
DOI: 10.5517/ccdc.csd.cc242q76, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccdc.csd.cc242q76&sid=DataCite
Dataset