发光材料作为生活中的常用材料之一，广泛应用于人造光源、显示器件、生物成像、信息存储和防伪等多个领域。分子基发光材料相比于纯无机体系，具有合成路径简单、能耗低、发射可调和色纯度高等特点。基于过去的研究，许多策略都可用来提升有机分子基发光材料的光学性能，例如引入芳香酮和重原子来增强自旋-轨道耦合，或通过构建主客体系统、氢键网络、有机金属骨架和高分子聚合来稳定三线态激子、减弱非辐射跃迁。然而，挑战也一并存在：如高性能有机发光材料的种类有限、发光效率不高、稳定性欠缺，发光可调性不强等，这都在一定程度上限制了材料的商业化应用。为解决上述问题，在本工作中，我们以有机-金属卤化物体系为基础，设计并合成了两类发光材料。

（1）为了获得发射可调和低光损耗的光波导材料，需要构筑高度有序的结构，以减少传输中的光损耗。另外，有机分子的质子化能引入电荷转移等中间能级，易于形成多个激发态。因此，我们选择了具有强烈质子化倾向的1,4-二[2-（4-吡啶基）乙烯基]苯（Bpeb）作为有机组分，并选择了三种无机金属卤化物作为无机组分，成功合成了三种具有一维宏观形貌的有机金属卤化物微纳米管/棒光波导材料，其PLQY值最高可达46.9 %，光损耗系数最低可至0.308 dB mm^-1。材料波长发射范围覆盖橙光区至近红外区域，极大满足了不同波段的传导需求。

（2）为了在荧光分子中实现长寿命的磷光发射，我们通过三齿螯合结构协同聚集诱导发光策略，成功开启了有机分子的系间窜跃通道，获得了三线态激子。配合物的螯合结构可以抑制有机分子的运动（振动、转动），进而抑制高能态激子的非辐射跃迁，实现室温磷光。据此，我们以4-羟基-2,6-吡啶二羧酸二甲酯（4HPDD）作为电子受体，无机化合物作为电子给体，设计并合成了两种具有螯合结构的晶体材料，两种螯合物具有动态发射和不同激发模式下的多通道荧光、磷光发射，发光寿命最长为75.31 ms。

综上所述，该研究工作构筑了两类具有刚性结构的有机-金属卤化物发光体系，并通过一系列光学分析和理论计算来阐明材料结构与性能之间的联系，基于材料性能拓展了其在光学器件和光学逻辑门等领域的应用。

As one of the commonly used materials in life, luminescent materials can be widely used in many fields, such as artificial light sources, display devices, biological imaging, information storage and anti-counterfeiting. Compared with inorganic systems, organic luminescent materials possess excellent properties, such as a simpler synthetic route, low energy consumption, tunable emission and higher emissive color purity. Based on previous research, many feasible strategies have been proposed to enhance the optical properties of organic luminescent materials, such as introducing aromatic ketones and heavy atoms to enhance the spin-orbit coupling, or constructing Host-guest systems, H-bond networks, organic-metal frameworks, and polymer polymerization to stabilize triplet excitons and weaken non-radiative transitions. However, there are still some challenges need to be solved: for example, the number of high-performance organic luminescent materials are limited, and the photoluminescence quantum efficiency, stability, tunablility and luminescence lifetime of the materials need to be improved. These problems all limit the commercial application of materials to some extent. In order to address these issues, in this work, we designed and synthesized two types of luminescent materials based on organic-metal halide hybrid systems.

(1) In order to achieve tunable emission and optical waveguide with low optical loss, we need to construct highly ordered structure to reduce optical loss during propagation. Meanwhile, the protonation of organic molecules can introduce intermediate energy levels, such as charge transfer (CT) states, which have a great potential for constructing multiple excited states. Therefore, 1,4-bis[2-(4-pyridyl)-ethenyl]benzene (Bpeb) with protonation tendency has been selected as the organic part to hybrid with different metal halides. We have successfully synthesized three morphologically one-dimensional (1D) organic metal halide micro/nanotubes or micro/nanorods with high PLQY up to 46.9% and low optical loss coefficient of 0.308 dB mm^-1. Remarkably, the emission of the materials covers from orange light region to near-NIR region, which meets the transmission needs for different wavebands in optical waveguide devices.

In the second work, in order to realize long-lived phosphorescent emission in phosphors, we take advantage of tridentate chelated structure and aggregation-induced emission strategy simultaneously, which open the Intersystem crossing channel and harvest the triplet excitions. The chelated structure can greatly weaken organic molecules’ vibration and rotation and reduce non-radiative emission of excitions at excited states, finally, achieve room temperature phosphorescence. We have designed and synthesized two tridentate chelated crystal materials, with the Dimethyl 4-hydroxy-2,6-pyridinedicarboxylate (4HPDD) as an electron acceptor (A) and organic compound as an electron donor (D). These two chelates present intrinsic dynamical characteristics and multiple emissions of fluorescence and phosphorescence under different excitation modes, the lifetime up to 75.31 ms.

In summary, this work construct two organic-metal halide hybrid systems with rigid structures. At the same time, the relationship between the structure and properties is illustrated according to the optical tests and the corresponding theoretical calculations. The applications of these materials in the fields of optical devices and optical logic gates are expanded based on the properties of the materials.