Journal
NANO RESEARCH
Volume 13, Issue 3, Pages 875-881Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-020-2710-3
Keywords
water-induced; phosphorescence; triplet states; hydrogen-bonded networks
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Funding
- National Natural Science Foundation of China [11904326, 21601159, 61604132, 51602288]
- National Science Fund for Distinguished Young Scholars [61425021]
- Key Science and Technology Project of Henan Province [171100210600]
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Room temperature phosphorescence (RTP) materials show potential applications in information security and optoelectronic devices, but it is still a challenge to achieve RTP in organic materials under water ambient due to the unstable property of triplet states. Herein, water-induced RTP has been demonstrated in the organic microrod (OMR). Noting that the RTP intensity of the as-prepared OMR is greatly enhanced when water is introduced, and the reason for the enhancement can be attributed to the formation of hydrogen-bonded networks inside the OMR. The hydrogen-bonded networks can confine the molecular motion effectively, leading to the stability of triplet states; thus the lifetime of the OMR can reach 1.64 s after introducing water. By virtue of the long lifetime of the OMR in the presence of water, multilevel data encryption based on the OMR has been demonstrated.
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