Ultralong organic room-temperature phosphorescence (RTP) materials have attracted great attention recently due to its diverse application potentials. Several ultralong organic RTP materials mimicking the host-guest architecture of inorganic systems have been exploited successfully. However, complicated synthesis and high expenditure are still inevitable in these cases. Herein, we develop a series of novel host–guest organic phosphore systems, in which all chromophores are electron-rich, commercially available and halogen atom free. The maximum phosphorescence efficiency and the longest lifetime reach at 23.6% and 362 ms, respectively. Most importantly, experimental results and theoretical calculation indicate that the host molecules not only play a vital role in providing a rigid environment to suppress non-radiative decay of the guest, but also show a synergistic effect to the guest through Förster energy transfer (FERT). The commercial availability, facile preparation and unique properties also make these new host-guest materials an excellent candidate for anti-counterfeiting devices.

中文翻译：

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通过高效的福斯特共振能量转移，给电子体和市售分子的超长有机室温荧光

超长有机室温磷光（RTP）材料由于其多样化的应用潜力，最近引起了极大的关注。已成功开发了几种模仿无机系统的来宾结构的超长有机RTP材料。但是，在这些情况下，仍然不可避免地需要复杂的合成过程和高昂的支出。本文中，我们开发了一系列新颖的主体-客体有机磷光体系，其中所有生色团均富含电子，可商购且不含卤素原子。最大磷光效率和最长寿命分别达到23.6％和362 ms。最重要的是，实验结果和理论计算表明，主体分子不仅在提供刚性环境以抑制客体的非辐射衰减方面起着至关重要的作用，而且还通过Förster能量转移（FERT）对客人产生协同作用。商业可获得性，简便的制备方法和独特的性能也使这些新型客用客体材料成为防伪设备的极佳候选者。