期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 8, 期 3, 页码 894-899出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9tc06297a
关键词
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资金
- National Natural Science Foundation of China [21472059, 21772054]
- 111 Project [B17019]
Stimuli-responsive luminescent materials, which show various luminescence alterations upon the introduction of external mechanical forces, have attracted extraordinary attention owing to their promising applications in smart materials. Amongst, the phenomena of self-recovered mechanochromic luminescence constitute only a small proportion, and relevant systematic explorations are extremely limited. Here, we developed a series of new Au(i) complexes (AuIB-Cn, n = 5-10) featuring aggregation-induced emission properties, and systematically studied their solid-state self-recovery properties. We showed that the self-recovery speed could be elaborately tuned by introducing alkyl chains of different lengths, or changing the temperature. Increasing the alkyl chain length could speed up the self-recovery due to much faster intermolecular rearrangements. Lowering the temperature allowed for the capture of the originally superfast and unobservable self-recoveries of C8-C10 due to the decreased molecular mobility. In addition, we also demonstrated the great potentials of these AIE-active complexes serving as self-erasing rewritable paper and anti-counterfeit carbonless copy paper in practical applications.
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