Sensitizing low-energy light with organic charge-transfer complexes bearing modifiable states of matter: towards liquefied metal-free TTA-UC system

用具有可改变物质状态的有机电荷转移复合物敏化低能光：走向液化无金属TTA-UC系统

• 批准号: 21K05244
• 负责人: HUI JOSEPH
• 金额: $ 2.5万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-01 至 2023-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21K05244/
• 关键词: charge-transfer; photon upconversion; organic photosensitizer; metal-free TTA-UC; liquefied TTA-UC; photoelectrical devices; triplet-triplet; annihilation; organic photosensitizers

The proposed research focuses on developing a new family of organic photosensitizers with BPEA-TCNB CT complexes bearing modifiable states of matter. The interim goals set for FY2022 include 1) making samples with the prepared CT complexes and different triplet acceptors and 2) performing the TTA-UC measurements. Those scheduled tasks were completed very smoothly. Positive results were observed with the samples utilizing perylene-based triplet acceptors, but the detected signals were unexpectedly weak even with high laser power due to poor solid surfaces in contact between the BPEA-TCNB CT complexes and the triplet acceptors. Further modifications in sample preparations would be required, however, this project unfortunately has to cut short due to the expiration of my employment contract.

该研究的重点是开发一种新的有机光敏剂家族，具有BPEA-TCNB CT复合物，具有可修饰的物质状态。2022财年设定的中期目标包括1）使用制备的CT复合物和不同的三重态受体制备样品，以及2）进行TTA-UC测量。这些预定的任务都非常顺利地完成了。使用基于二萘嵌苯的三重态受体的样品观察到阳性结果，但是由于BPEA-TCNB CT复合物和三重态受体之间接触的固体表面差，即使使用高激光功率，检测到的信号也出乎意料地弱。样品制备需要进一步的修改，然而，由于我的雇佣合同到期，这个项目不幸不得不缩短。