Organic Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, 411 008, Pune, India.
Academy of Scientific and Innovative Research (AcSIR), 201 002, Ghaziabad, India.
Chem Asian J. 2023 Jul 3;18(13):e202300276. doi: 10.1002/asia.202300276. Epub 2023 May 23.
The synthetic feasibility and excellent luminescence features of organic molecules attracted much attention and were eventually found useful in lighting applications. In this context, a solvent-free organic liquid having attractive thermally activated delayed fluorescence features in bulk along with high processability has prime importance. Herein, we report a series of naphthalene monoimide-based solvent-free organic liquids exhibiting cyan to red thermally activated delayed fluorescence with luminescence quantum yields up to 80% and lifetimes between 10 to 45 μs. An effective approach explored energy transfer between liquid donors with various emitters exhibiting tunable emission colors, including white. The high processability of liquid emitters improved the compatibility with polylactic acid and was used for developing multicolor emissive objects using 3D printing. Our demonstration of the thermally activated delayed fluorescence liquid will be much appreciated as a processable alternate emissive material suitable for large-area lighting, display, and related applications.
有机分子的合成可行性和优异的发光特性引起了广泛关注，并最终在照明应用中得到了应用。在这种情况下，具有吸引人的热激活延迟荧光特性的无溶剂有机液体在块状物中具有高的加工性能至关重要。在此，我们报告了一系列基于萘二酰亚胺的无溶剂有机液体，它们在块状物中表现出蓝绿到红色的热激活延迟荧光，发光量子产率高达 80%，寿命在 10 到 45 μs 之间。我们探索了通过具有各种发射器的液体供体之间的能量转移，从而实现发射颜色可调谐，包括白色。液体发射器的高加工性能提高了与聚乳酸的相容性，并用于通过 3D 打印开发多色发射体的对象。我们对热激活延迟荧光液体的演示将受到赞赏，因为它是一种适合大面积照明、显示和相关应用的可加工替代发光材料。
