Cholesteric liquid crystal (CLC) exhibits selective reflection, making it a great application in the field of light control. Here, a near-infrared light (NIR) was used to drive the self-organizing spiral superstructure of the cholesteric liquid crystal to adjust the reflection notch. The polymer dye M2 with near-infrared absorption properties was synthesized by thiol-ene click polymerization and [2 + 2] click reaction; and has good solubility in the CLC system. M2 absorbs near-infrared light to increase the temperature of the system and the temperature-sensitive chiral dopant CD can realize the photothermal tuning of CLC system by the spiral twisting force of CLC with the change of temperature. The use of near-infrared light is beneficial compared to ultraviolet (UV) and visible light because of its invisibility, high penetration and ease of remote control. The entire CLC system has good near-infrared absorption, fast light response and a wide adjustable range.

胆甾型液晶（CLC）表现出选择性反射，使其在光控制领域具有重要的应用。在这里，使用近红外光（NIR）来驱动胆甾型液晶的自组织螺旋上层结构，以调整反射缺口。通过硫醇-烯点击聚合和[2 + 2]点击反应合成具有近红外吸收特性的聚合物染料M2；并且在CLC系统中具有良好的溶解性。M2吸收近红外光以提高系统温度，热敏手性掺杂剂CD可以通过CLC随温度变化的螺旋扭转力实现CLC系统的光热调谐。与紫外线（UV）和可见光相比，近红外光的使用是有益的，因为它不可见，穿透力强且易于遥控。整个CLC系统具有良好的近红外吸收，快速的光响应和广泛的可调范围。