Multi-responsive functional materials with simultaneous photothermal and photoluminescent properties have broad applicational prospects in the field of flexible electronics, devices and remote force detection and monitor. Here, a feasible method is developed by introducing MoO_3-x quantum dots (MoO_3-x QDs) and blue fluorescent carbon dots (B-CDs) into a strong hydrogel matrix to fabricate a novel composite hydrogel with concurrent photothermal and photoluminescent properties. Besides rendering the peculiar multifunctionalities, we found that the addition of photothermal MoO_3-x QDs enhances the mechanical properties and self-healing properties of the composite hydrogel. The temperature of the MoO_3-x-CDs-PVA (Polyvinyl Alcohol) hydrogel can rise by 30 °C within 1 min after 808 nm infrared laser irradiation and the self-healing efficiency could double after 40 s of irradiation. Moreover, there is a good linear relationship between the fluorescence intensity of the composite hydrogel and the external force, which can be used to monitor the force within a certain range. The monitoring range and sensitivity can be further improved by adjusting the infrared laser to for small force detection. Finally, the novel composite hydrogel is successfully applied to fracture monitoring in fracturing and force monitoring at different locations in the fluid model in the field of petroleum engineering.

同时具有光热和光致发光特性的多响应功能材料在柔性电子、器件和远程力检测与监测领域具有广阔的应用前景。_{在这里，通过将MoO 3-x}量子点（MoO _3-x QDs）和蓝色荧光碳点（B-CDs）引入强水凝胶基质中，开发了一种可行的方法，以制备具有同时光热和光致发光性能的新型复合水凝胶。除了呈现特殊的多功能性外，我们发现添加光热 MoO _3-x QDs 增强了复合水凝胶的机械性能和自愈性能。MoO _3-x的温度-CDs-PVA（聚乙烯醇）水凝胶在808 nm红外激光照射后1 min内可升高30°C，照射40 s后自愈效率翻倍。此外，复合水凝胶的荧光强度与外力之间存在良好的线性关系，可用于监测一定范围内的外力。通过将红外激光调节到小力检测，可以进一步提高监测范围和灵敏度。最后，该新型复合水凝胶成功应用于石油工程领域流体模型的压裂裂缝监测和不同位置的受力监测。