Amorphous Pure Organic Polymers for Heavy-Atom-Free Efficient Room-Temperature Phosphorescence Emission
Amorphous Pure Organic Polymers for Heavy-Atom-Free Efficient Room-Temperature Phosphorescence Emission
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用于无重原子高效室温磷光发射的非晶纯有机聚合物
DOI：
10.1002/anie.201803947
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发表时间：
2018-08-20
影响因子：
16.6
通讯作者：
Tian, He
中科院分区：
文献类型：
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作者：
Ma, Xiang;Xu, Chao;Tian, He
纯有机、不含重原子的室温磷光（RTP）材料因其丰富的激发态性质而备受关注，在光电和生物化学材料领域具有潜在的应用前景。它们提供长的发光寿命、多样化的设计和容易的制备。然而，近年来在环境条件下的高效磷光的成就主要集中在有序晶格或嵌入刚性基质中，这需要严格的生长条件并且具有较差的再现性。在此，我们开发了一种简洁的方法，通过丙烯酰胺和不同的含氧官能团的磷光体的自由基二元共聚，在非晶态下得到具有良好的量子产率和超长磷光寿命的RTP。聚合物链之间的交联氢键网络抑制磷光体以抑制非辐射跃迁并提供微环境以屏蔽猝灭剂。
Pure organic, heavy-atom-free room-temperature phosphorescence (RTP) materials have attracted much attention and have potential applications in photoelectric and biochemical material fields owing to their rich excited state properties. They offer long luminescent lifetime, diversified design, and facile preparation. However, recent achievements of efficient phosphorescence under ambient conditions mainly focus on ordered crystal lattices or embedding into rigid matrices, which require strict growth conditions and have poor reproducibility. Herein, we developed a concise approach to give RTP with a decent quantum yield and ultralong phosphorescence lifetime in the amorphous state by radical binary copolymerization of acrylamide and different phosphors with oxygen-containing functional groups. The cross-linked hydrogen-bonding networks between the polymeric chains immobilize phosphors to suppress non-radiative transitions and provide a microenvironment to shield quenchers.