A new V-shaped organic fluorescent compound integrated with crystallization-induced emission enhancement and intramolecularcharge transfer
The emission behavior of a new V-shaped organic fluorescent compound (p,p′-bis(2-aryl-1,3,4-oxadiazol-5-yl)diphenyl sulfone (OZA-SO), consisting of diethylamino (donor) and sulfone (acceptor) units, has been studied in various polar solvents and with different morphologies. As expected, there is the...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/106181 http://hdl.handle.net/10220/17735 |
| _version_ | 1826127438157971456 |
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| author | Gu, Pei-Yang Zhang, You-Hao Liu, Gao-Yan Ge, Jian-Feng Xu, Qing-Feng Zhang, Qichun Lu, Jian-Mei |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Gu, Pei-Yang Zhang, You-Hao Liu, Gao-Yan Ge, Jian-Feng Xu, Qing-Feng Zhang, Qichun Lu, Jian-Mei |
| author_sort | Gu, Pei-Yang |
| collection | NTU |
| description | The emission behavior of a new V-shaped organic fluorescent compound (p,p′-bis(2-aryl-1,3,4-oxadiazol-5-yl)diphenyl sulfone (OZA-SO), consisting of diethylamino (donor) and sulfone (acceptor) units, has been studied in various polar solvents and with different morphologies. As expected, there is the gradual transition from the locally excited state to the intramolecular charge-transfer (ICT) state with the increasing solvent polarity. The photoluminescence intensity of OZA-SO initially decreases with a low water fraction (fw), owing to ICT effect, and then increases with a high fw, owing to crystallization-induced emission enhancement. At the same time, the fluorescence lifetime of OZA-SO increases from 0.062 ns in dimethylformamide (DMF) to 5.80 ns in a solution containing 90 % water, and then to 7.49 ns in a solution containing 60 % water. Furthermore, the solid-state emission of OZA-SO can be tuned reversibly from green to yellow by fuming/grinding or fuming/heating owing to morphological changes. This color-switchable feature of OZA-SO may have potential applications in optical-recording and temperature-sensing materials. |
| first_indexed | 2024-10-01T07:08:53Z |
| format | Journal Article |
| id | ntu-10356/106181 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:08:53Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/1061812020-06-01T10:21:10Z A new V-shaped organic fluorescent compound integrated with crystallization-induced emission enhancement and intramolecularcharge transfer Gu, Pei-Yang Zhang, You-Hao Liu, Gao-Yan Ge, Jian-Feng Xu, Qing-Feng Zhang, Qichun Lu, Jian-Mei School of Materials Science & Engineering The emission behavior of a new V-shaped organic fluorescent compound (p,p′-bis(2-aryl-1,3,4-oxadiazol-5-yl)diphenyl sulfone (OZA-SO), consisting of diethylamino (donor) and sulfone (acceptor) units, has been studied in various polar solvents and with different morphologies. As expected, there is the gradual transition from the locally excited state to the intramolecular charge-transfer (ICT) state with the increasing solvent polarity. The photoluminescence intensity of OZA-SO initially decreases with a low water fraction (fw), owing to ICT effect, and then increases with a high fw, owing to crystallization-induced emission enhancement. At the same time, the fluorescence lifetime of OZA-SO increases from 0.062 ns in dimethylformamide (DMF) to 5.80 ns in a solution containing 90 % water, and then to 7.49 ns in a solution containing 60 % water. Furthermore, the solid-state emission of OZA-SO can be tuned reversibly from green to yellow by fuming/grinding or fuming/heating owing to morphological changes. This color-switchable feature of OZA-SO may have potential applications in optical-recording and temperature-sensing materials. 2013-11-15T07:43:06Z 2019-12-06T22:05:53Z 2013-11-15T07:43:06Z 2019-12-06T22:05:53Z 2013 2013 Journal Article Gu, P.-Y., Zhang, Y.-H., Liu, G.-Y., Ge, J.-F., Xu, Q.-F., Zhang, Q., et al. (2013). A New V-Shaped Organic Fluorescent Compound Integrated with Crystallization-Induced Emission Enhancement and IntramolecularCharge Transfer. Chemistry - An Asian Journal, 8(9), 2161-2166. https://hdl.handle.net/10356/106181 http://hdl.handle.net/10220/17735 10.1002/asia.201300331 en Chemistry - an Asian journal |
| spellingShingle | Gu, Pei-Yang Zhang, You-Hao Liu, Gao-Yan Ge, Jian-Feng Xu, Qing-Feng Zhang, Qichun Lu, Jian-Mei A new V-shaped organic fluorescent compound integrated with crystallization-induced emission enhancement and intramolecularcharge transfer |
| title | A new V-shaped organic fluorescent compound integrated with crystallization-induced emission enhancement and intramolecularcharge transfer |
| title_full | A new V-shaped organic fluorescent compound integrated with crystallization-induced emission enhancement and intramolecularcharge transfer |
| title_fullStr | A new V-shaped organic fluorescent compound integrated with crystallization-induced emission enhancement and intramolecularcharge transfer |
| title_full_unstemmed | A new V-shaped organic fluorescent compound integrated with crystallization-induced emission enhancement and intramolecularcharge transfer |
| title_short | A new V-shaped organic fluorescent compound integrated with crystallization-induced emission enhancement and intramolecularcharge transfer |
| title_sort | new v shaped organic fluorescent compound integrated with crystallization induced emission enhancement and intramolecularcharge transfer |
| url | https://hdl.handle.net/10356/106181 http://hdl.handle.net/10220/17735 |
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