Manganese-based nanoparticles with continuous luminescence and relaxation performance, and preparation method thereof

The invention discloses manganese-based nanoparticles with continuous luminescence and relaxation performance, and a preparation method thereof. The preparation method comprises following steps: A, manganese oleate is taken as a precursor, thermal decomposition is adopted to prepare manganese-based nanoparticles; and B, the manganese-based nanoparticles obtained in step A are subjected to silane carboxylation so as to obtain the water soluble manganese-based nanoparticles with continuous luminescence and relaxation performance. The manganese-based nanoparticles with continuous luminescence andrelaxation performance can be used in magnetic resonance and optical dual mode imaging. 种具有弛豫性能和可连续发光锰基纳米粒及其制备方法，该制备方法包括：A)以油酸锰为前驱体，热分解制备锰基纳米粒；B)对步骤A)获得的锰基纳米粒进行硅烷羧酸化修饰，得到水溶性具有弛豫性能和可连续发光锰基纳米粒。该锰基纳米粒可用于磁共振和光学双模式成像。