期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 3, 期 14, 页码 3329-3335出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5tc00109a
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资金
- Ministry of Science and Technology of Republic of China [MOST 103-2633-M-007-001]
Altering the luminescence properties of a material through external factors is an attractive feature that has the potential for various luminescence-related applications. Here, we report the synthesis and luminescence properties of two anthracene-based donor acceptor compounds, N, N-di-p-tolylanthracen- 9-amine (TAA) and 10-bromo-N, N-di-p-tolylanthracen-9-amine (TAAB). In the solid state, the bromo-substituted compound TAAB shows reversible visible switching of the emission by external stimuli such as solvent, mechanical grinding and temperature. Single crystal X-ray studies, powder-XRD analysis and theoretical calculations reveal that switchable emission originated from the different stacking modes of TAAB. Furthermore, we have found that the bromo group interaction in the solid state plays a crucial role in this tunable emission. The other anthracene-based compound TAA does not show such switching of the emission by external stimuli. The observed changes in the luminescence of TAAB by external stimuli suggest potential applications in rewritable optical media, sensors, and optoelectronic devices.
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