The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Time‐Dependent Afterglow Color in a Single‐Component Organic Molecular Crystal
Abstract
An organic crystal of 4,4′‐bis(N‐carbazolyl)‐1,1′‐biphenyl (pCBP) exhibits time‐dependent afterglow color from blue to orange over 1 s. Both experimental and computational data confirm that the color evolution results from well‐separated, long‐persistent thermally activated delayed fluorescence (TADF) and room‐temperature phosphorescence (RTP) with different but comparable decay rates. TADF is enabled by a small S 1–T 1 energy gap of 0.7 kcal mol−1. The good separation of TADF and RTP is due to a 11.8 kcal mol−1 difference in the S 0 energies of the S 1 and T 1 structures, indicating that apart from the excited‐state properties, tuning the ground state is also important for luminescence properties. This afterglow color evolution of pCBP allows its applications in anticounterfeiting and data encryption with high security levels.
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Cites
Recent advances in organic thermally activated delayed fluorescence materials
Yang, Z., Mao, Z., Xie, Z., Zhang, Y., Liu, S., Zhao, J., Xu, J., Chi, Z., & Aldred, M. P. (2017) · Chemical Society Reviews · doi:10.1039/c6cs00368k · Cited by 2,395
Cited by
Li, D., Yang, J., Fang, M., Tang, B. Z., & Li, Z. (2022) · Science Advances · doi:10.1126/sciadv.abl8392 · Cited by 348
Metadata
- Authors
- Wang, J., Fang, Y., Li, C., Niu, L., Fang, W., Cui, G., & Yang, Q.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2020-03-04
- Volume
- 59
- Issue
- 25
- Pages
- 10032-10036
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W3006308782
- Cited by
- 219
- References
- 1
- FWCI
- 11.75
- Type
- journal article
- Language
- en
- Open access
- closed
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- Wang, J., Fang, Y., Li, C., Niu, L., Fang, W., Cui, G., & Yang, Q. (2020). Time‐Dependent Afterglow Color in a Single‐Component Organic Molecular Crystal. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202001141
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