Abstract:
:Blue/deep-blue emission is crucial for organic optoelectronics but remains a formidable challenge in organic afterglow due to the difficulties in populating and stabilizing the high-energy triplet excited states. Here, a facile strategy to realize the efficient deep-blue organic afterglow is proposed via host molecules to sensitize the triplet exciton population of guest and water implement to suppress the non-radiative decays by matrices rigidification. A series of highly luminescent deep-blue (405-428 nm) organic afterglow materials with lifetimes up to 1.67 s and quantum yields of 46.1% are developed. With these high-performance water-responsive materials, lifetime-encrypted rewritable paper has been constructed for water-jet printing of high-resolution anti-counterfeiting patterns that can retain for a long time (>1 month) and be erased by dimethyl sulfoxide vapor in 15 min with high reversibility for many write/erase cycles. These results provide a foundation for the design of high-efficient blue/deep-blue organic afterglow and stimuli-responsive materials with remarkable applications.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Xu S,Wang W,Li H,Zhang J,Chen R,Wang S,Zheng C,Xing G,Song C,Huang Wdoi
10.1038/s41467-020-18572-9subject
Has Abstractpub_date
2020-09-23 00:00:00pages
4802issue
1issn
2041-1723pii
10.1038/s41467-020-18572-9journal_volume
11pub_type
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