精细调整激发状态分子内质子转移 (ESIPT) 的能量:在单个ESIPT系统中产生白光
Kuo-Chun Tang1, Ming-Jen Chang, Tsung-Yi Lin
1Department of Chemistry, National Taiwan University, Taipei, 10617 Taiwan, ROC.
Journal of the American Chemical Society
|October 1, 2011
概括
这项研究探讨了在修改后的 indanone 分子中激发状态的分子内质子转移 (ESIPT). 研究人员使用单一的ESIPT系统实现了白光生成,证明了新型有机发光二极管的潜力.
科学领域:
- 摄影化学的使用.
- 有机化学 有机化学
- 材料科学 材料科学 材料科学
背景情况:
- 7-基-1-英丹表现出激发状态的分子内质子转移 (ESIPT).
- 通过将和二环融合到indanone原型中,进行了化学修改.
- 了解ESIPT动态对于开发新的光电子材料至关重要.
研究的目的:
- 为了研究化和烯环对ESIPT动态的影响.
- 探索单元ESIPT系统中白光生成的潜力.
- 根据这些改性分子制造和表征有机发光二极管 (OLED).
主要方法:
- 用化和纳环合成修改后的英达分子 (II和III).
- 用光谱分析 (发射光谱,放松动态) 来研究ESIPT.
- 计算ESIPT速率,平衡常数和自由能量变化.
- 有机发光二极管 (OLED) 装置的制造和测试.
主要成果:
- 分子I显示了超快的ESIPT与530nm左右的分离体辐射.
- 分子II和III通过双重发射建立了兴奋状态平衡.
- 为II和III确定ESIPT前期和后期利率,分别产生0.37和2.2的平衡常数.
- 分子III在固态中实现了白光生成 (CIE (0.30, 0.27)) 并用于功能OLED (CIE (0.26, 0.35)).
结论:
- 印但核心的化学修饰显著影响ESIPT的动态和排放特性.
- 一个单一的ESIPT系统可以实现高效的白光生成.
- 这些发现证明了基于ESIPT的单元白光发射器和OLED的概念验证.
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