Journal
MATERIALS CHEMISTRY FRONTIERS
Volume 4, Issue 7, Pages 2047-2053Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0qm00247j
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Funding
- National Natural Science Foundation of China [21721005, 91833304, 21805195, 51903159]
- Shenzhen Science and Technology Program [KQTD20170330110107046]
- Shenzhen Technology and Innovation Commission [JCYJ20180507182244027]
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The development of intelligent luminescent materials, particularly those exhibiting high-contrast (Delta lambda(em,max)> 100 nm) and multicolor mechanochromic luminescent (MCL) characteristics, is highly desirable but a formidable challenge. In this work, we designed three luminogens with aggregation-induced emission (AIE) features, namely7PTP-BPXZ,5PTP-BPXZand5,7PTP-BPXZ. The synergistic effect between the folded conformation of the benzo[a]phenoxazine fragment and various intermolecular non-covalent interactions is beneficial for multicolor tunable emission upon external stimuli. Impressively,7PTP-BPXZand5PTP-BPXZdisplayed reversible tricolor MCL behavior with high contrast (Delta lambda(em,max), 114 nm and 137 nm, respectively). Furthermore,7PTP-BPXZpossessed acidochromic function with Delta lambda(em,max)of 132 nm. This is the first report of single-component small organic molecules featuring both multicolor and high-contrast beyond 100 nm mechanochromism and acidochromism.
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