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Proton-Triggered Hypsochromic Luminescence in 1,1'-(2,5-Distyryl-1,4-phenylene) Dipiperidine
Jinlong Chen1, Suqian Ma1, Jibo Zhang1
1State Key Laboratory of Supramolecular Structure and Materials, Jilin Unversity, Qianjin Street No. 2699, Changchun 130012, People's Republic of China.
Abstract:
A proton-triggered hypsochromic luminescent chromophore 1,1'-(2,5-distyryl-1,4-phenylene) dipiperidine (DPD) was designed and synthesized. Upon treatment by hydrochloric acid (HCl), the emission of DPD showed a large hypsochromic shift in both THF solution and microcrystals. Theoretical calculations and powder X-ray diffraction experiments reveal that the switchable emission of DPD originated from the change of the distribution and the spatial arrangement of the frontier molecular orbitals, and the different stacking modes of DPD in microcrystals also contribute to the switchable emission of DPD in aggregates.
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