使用热激活延迟光设计原则获得的有机光热材料.
Jana R Caine1, Heekyoung Choi1, Ryoga Hojo1
1Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T 1Z1, Canada) .
Chemistry (Weinheim an der Bergstrasse, Germany)
|November 28, 2023
概括
新的有机小分子为光热疗法提供了高效的近红外光转换. 这些材料显示出高光热转换效率,并改善了潜在的生物医学应用的水分散性.
科学领域:
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
- 有机化学 有机化学
背景情况:
- 有机小分子由于生物相容性和近红外吸收,对光热疗法充满希望.
- 在光热疗法中,近红外光的吸收对于深层组织透至关重要.
- 目前的无机材料在治疗应用中具有生物相容性的限制.
研究的目的:
- 开发具有高光热转换效率 (PCE) 的新型有机小分子,用于近红外 (NIR) 光吸收.
- 研究影响捐赠者-接受者有机物质中PCEs的结构-性质关系.
- 通过纳米粒子封装来提高这些有机材料的适用性,以提高分散性和有效性.
主要方法:
- 三种捐赠-接受器有机物质 (DM-ANDI,O-ANDI,S-ANDI) 的合成和表征.
- 在近红外辐射下测量光热转换效率.
- 热激活延迟光 (TADF) 材料的修改,以实现低光发光量产 (PLQY).
- 将材料封装成纳米粒子和聚合有机点.
主要成果:
- 在合成的有机材料中实现了高光热转换效率,范围为46-68%.
- 这三种化合物均表现出强烈的近红外吸收特性.
- 成功将材料封装成纳米粒子和有机点,改善水分散性和调节PCEs.
结论:
- 开发的捐赠-接受器有机分子对于近红外光热疗法非常有效.
- 合理的分子设计,包括减少HOMO-LUMO重叠,是实现高PCEs的关键.
- 纳米粒子封装为增强这些有机光热剂在水环境中的实际应用提供了一个可行的策略.
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