碳量子点（CQDs）作为一种新兴的零维碳纳米发光材料，凭借其优异的光热稳定性、化学稳定性、可调节的荧光发射特性以及良好的生物相容性，近年来在新型量子点发光材料领域备受瞩目。碳量子点发光材料兼具环境友好和无毒等优点，在发光二极管（LEDs）等领域展现出广阔的应用前景。然而，现有的碳量子点制备方法普遍存在产率低、液态发光效率高而固态发光效率低、以及固态下易发生聚集诱导荧光猝灭（ACQ）等问题。针对上述挑战，亟需开发绿色、简便、低成本且环境友好的制备方法，以有效解决固体碳量子点聚集导致的荧光猝灭问题，从而拓展其在更广泛领域的应用。本文采用简易便捷的一步法，分别以2,5-二甲氧基苯-1,4-二甲醛、2,5-二己氧基对苯二甲醛和对苯二乙腈为前驱体，成功合成了两种高性能近红外和深红色的固体发光碳量子点，其发射波长分别为714和676 nm，量子产率高达18%和42%。本论文为发展高性能固体发光碳量子点提供了一种简便快速的合成方法。此外，高性能固态发光碳量子点在电致和光致LEDs等领域具有良好的应用前景。

Carbon quantum dots (CQDs), as an emerging zero-dimensional carbon nanomaterial, have attracted considerable attention in the field of new quantum dot luminescent materials in recent years, owing to their excellent photothermal stability, chemical stability, tunable fluorescence emission characteristics, and good biocompatibility. Carbon quantum dot luminescent materials possess advantages such as environmental friendliness and non-toxicity, showing broad application prospects in fields such as light-emitting diodes (LEDs). However, existing methods for preparing carbon quantum dots generally suffer from low yield, high liquid-state luminescence efficiency but low solid-state luminescence efficiency, and aggregation-caused quenching (ACQ) in the solid state. Addressing these challenges urgently requires the development of green, simple, low-cost, and environmentally friendly preparation methods to effectively solve the fluorescence quenching problem caused by the aggregation of solid-state carbon quantum dots, thus expanding their applications in a wider range of fields. In this study, a simple and convenient one-step method was adopted to successfully synthesize two high-performance near-infrared and deep-red solid-state luminescent carbon quantum dots using 2,5-dimethoxyterephthalaldehyde, 2,5-bis(hexyloxy)terephthalaldehyde, and 1,4-phenylenediacetonitrile as precursors. Their emission wavelengths are 714 and 676 nm, with quantum yields of up to 18% and 42% respectively. This work provides a simple and rapid synthesis method for developing high-performance solid-state luminescent carbon quantum dots. Furthermore, high-performance solid-state luminescent carbon quantum dots have promising applications in areas such as electroluminescent and photoluminescent LEDs.