Loading...
Please wait, while we are loading the content...
Similar Documents
echano fl uorochromic properties of benzothiadiazole-cored cyano-substituted diphenylethene derivatives through D – A e ff ect
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zhang, Xi-Qi Ma, Zhiyong Yang, Yang Zhang, Xiangyu Jiab, Xinru |
| Copyright Year | 2014 |
| Abstract | We synthesized three new benzothiadiazole-cored cyano-substituted diphenylethene derivatives (PTOMe, PT-H, and PT-CF3) with different methoxy, hydrogen, and trifluoromethyl end groups, and the synthesis confirmed by standard spectroscopic methods. These end groups endowed them with different donor–acceptor (D–A) effects, and they provide them with a peculiar and completely opposite mechanofluorochromic property. Red-shifted mechanofluorochromic features were found in the PT-OMe and PT-H compounds, while on the contrary, PT-CF3 showed blue-shifted mechanofluorochromic behavior. The mechanofluorochromic mechanism was explored and attributed to the metastable state of the ground compounds and the crystalline-amorphous phase transformation between the original and ground states. Moreover, these derivatives showed reversible significant mechanofluorochromic properties and reproducibility between ground and annealed states, making them promising stimuli-responsive and smart luminescent materials for mechanosensors, fluorescence switches and light-emitting device applications. The introduction of the D–A effect strategy demonstrated in this work would provide a new path to fine tune the optical features of mechanofluorochromic materials with unique and diverse fluorescent properties. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.escience.cn/system/download/69065 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
