研制了一种新型的基于表面等离子体子共振的光学传感器用于抗原识别。该传感器采用固定入射角,以波长为变量,在400-800nm范围内进行实时监测。分子自组装技术用于在金基底层上形成敏感膜,并对敏感膜形成的动力学过程进行了研究。B因子作为补体C3激活子与多种疾病有关,B因子的检测范围为1-80μgmL。在优化的实验条件下,该传感器具有良好的再现性、再生性及选择性。 A new type of optical sensor based on surface plasmon resonance was developed for antigen recognition. The sensor uses a fixed angle of incidence to wavelength as a variable, real-time monitoring in the 400-800nm ​​range. Molecular self-assembly technique was used to form sensitive films on the gold substrate, and the kinetics of the formation of sensitive films was studied. B factor as a complement C3 activator and a variety of diseases, B factor detection range of 1-80μgmL. Under optimized experimental conditions, the sensor has good reproducibility, reproducibility and selectivity.