| Photoinduced energy transfer and charge transfer on squarylium cyanine dyes |
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| 作者姓名： | 赵为 张宝文 侯原军 曹怡 |
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| 作者单位： | Photochemistry Laboratory，Institute of Photographic Chemistry，Chinese Academy of Sciences，Beijing 100101，China，Photochemistry Laboratory，Institute of Photographic Chemistry，Chinese Academy of Sciences，Beijing 100101，China，Photochemistry Laboratory，Institute of Photographic Chemistry，Chinese Academy of Sciences，Beijing 100101，China，Photochemistry Laboratory，Institute of Photographic Chemistry，Chinese Academy of Sciences，Beijing 100101，China |
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| 基金项目： | Project (No. 59790050 and 29572072) supported by the National Natural Science Foundation of China |
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| 摘 要： | A series of squarylium cyanine dyes (Sqs) were synthesized to explore their applications in functional devices.Preliminary investigation on the mechanism involved in these devices was carried out.Spectroscopic behavior of Sqs with porphyrin (P),8-hydroxyquinolium aluminum (Alq) and ruthenium bipyridyl complex (Ru(bipy)) in solution,in film and on nanocrystalline TiO2 was investigated,respectively.A mechanism including photoinduced energy transfer and charge transfer processes was suggested in the corresponding practical devices.By means of doping,a red organic electroluminescent device (ELD) using Sq-doped Alq as the emission layer (EML) has been developed,and the total light to electricity efficiency of nanocrystalline TiO2 electrode based on using Sq-doped Ru(bipy) as photosensitizer has been improved greatly in the whole visible region,particularly in the red area above 600 nm.
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Photoinduced energy transfer and charge transfer on squarylium cyanine dyes |
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| ZHAO,Wei,ZHANG,Bao-Wen HOU,Yuan-Jun CAO,YiPhotochemistry Laboratory.Photoinduced energy transfer and charge transfer on squarylium cyanine dyes[J].Chinese Journal of Chemistry,1998,16(6):499-508. |
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| Authors: | ZHAO Wei ZHANG Bao-Wen HOU Yuan-Jun CAO YiPhotochemistry Laboratory |
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| Institution: | ZHAO,Wei,ZHANG,Bao-Wen HOU,Yuan-Jun CAO,YiPhotochemistry Laboratory,Institute of Photographic Chemistry,Chinese Academy of Sciences,Beijing 100101,China |
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| Abstract: | A series of squarylium cyanine dyes (Sqs) were synthesized to explore their applications in functional devices.Preliminary investigation on the mechanism involved in these devices was carried out.Spectroscopic behavior of Sqs with porphyrin (P),8-hydroxyquinolium aluminum (Alq) and ruthenium bipyridyl complex (Ru(bipy)) in solution,in film and on nanocrystalline TiO2 was investigated,respectively.A mechanism including photoinduced energy transfer and charge transfer processes was suggested in the corresponding practical devices.By means of doping,a red organic electroluminescent device (ELD) using Sq-doped Alq as the emission layer (EML) has been developed,and the total light to electricity efficiency of nanocrystalline TiO2 electrode based on using Sq-doped Ru(bipy) as photosensitizer has been improved greatly in the whole visible region,particularly in the red area above 600 nm. |
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| Keywords: | Electroluminescence photoinduced energy transfer photoinduced charge transfer photoelectric conversion |
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