The complexation of 4,4′-halogen-substituted biphenyls (BPs) with a trinuclear silver(I) 3,5-bis(trifluoromethyl)pyrazolate adduct ([AgL]₃) is observed in the solution and solid states. Infinite stacks are formed by alternating BPs and [AgL]₃ molecules via multiple metal–π interactions in a crystal. Encapsulation of the biphenyl derivatives between the [AgL]₃ units allows room-temperature phosphorescence in the solid state. Furthermore, the intercalation of BPs results in the formation of planar geometry, which allows the reduction of non-radiative relaxation and enhances luminescence due to the planar geometry of the excited states. Another crucial factor in efficient light emission is the asymmetry of the intermolecular complexes. The obtained complexes exhibited both phosphorescence and fluorescence bands spanning a wide spectral range. Furthermore, fine-tuning of emissions by varying excitation energy could produce white light.

中文翻译：

---

通过与环状吡唑酸银的分子间相互作用解锁的简单联苯衍生物的室温磷光和双发射行为


在溶液和固态下观察到 4,4′-卤素取代的联苯 （BP） 与三核银 （） 3,5-双（三氟甲基）吡唑酸酯加合物 （[AgL]₃） 的络合。无限堆叠是通过晶体中的多种金属-π相互作用交替 BP 和 [AgL]₃ 分子形成的。在 [AgL]₃ 单元之间封装联苯衍生物允许在固态下在室温下产生磷化。此外，BP 的嵌入导致平面几何形状的形成，这允许减少非辐射弛豫并增强由于激发态的平面几何形状而产生的发光。有效光发射的另一个关键因素是分子间复合物的不对称性。获得的复合物表现出跨越较宽光谱范围的磷光和荧光条带。此外，通过改变激发能量来微调发射可以产生白光。