【摘要】 通过简便的水热合成的方法,以稀土硝酸盐和三聚磷酸钠为原料,C ePO4∶Tb3+荧光纳米晶被成功制备。该纳米晶具有良好的稳定性和分散性。利用氧化还原反应诱导实现C e4+/C e3+之间的转换,能够有效地控制C ePO4∶Tb3+荧光纳米晶的荧光"开"或"关"。在此文中,F e3+作为氧化剂、抗坏血酸作为还原剂实现C e4+/C e3+之间的转换,以达到使C ePO4∶Tb3+的荧光完全猝灭以及还原的效果。更多还原

【Abstract】 CePO4∶Tb3+ luminescent nanocrystals were prepared by simple and convenient hydrothermal synthesis method with nitrate and sodium tripolyphosphate as raw matieral.These nanocrystals were stable and high-quality dispersibility.The fluorescence of the nanocrystals can be switched OFF or ON through the redox reaction inducing the formal Ce4+/Ce3+ couple,which can be carried out by the alternate adding an oxidizing agent and a reducing agent.The transformation of Ce4+/Ce3+ was achieved to obtain the completefluorescence quenching of CePO4∶Tb3+ and reduction effect.更多还原