Boron Nitride Quantum Dots Derived from Renewable Lignin

摘要

abstract_textpAlthough numerous attempts have been reported, however, efficient and facile approach about the preparation of boron nitride quantum dots (BNQDs) is yet to be explored. Here we have developed a biomass-directed suitable strategy from steam exploded rice straw lignin (SERSL) toward mass production of high-quality BNQDs with quantum yields (QY) as high as 18.2. Few-layered BNQDs have a mean lateral size of several nanometers and a thickness ranging from 0.5 nm to 2 nm as confirmed by transmission electron microscopy (TEM) and atomic force microscope (AFM). The BNQDs as-prepared emit bright and stable blue colors of luminescence under ultraviolet-light excitation. In addition, the BNQDs also exhibit low cytotoxicity and excellent cellular imaging capability. We believe that these BNQDs probably trigger potentially applications on lightemitting diodes and bioimaging in a green way./p/abstract_text