File Name : figure s1.tif Caption : fluorescence of cqds (left) and cqds/mox (right) under 365 nm uv lamp irradiation File Name : figure s2 2 nm.tif Caption : the hrtem image of cqds (2 nm) File Name : figure s2 5 nm.tif Caption : the hrtem image of cqds (5 nm) File Name : figure s2 10 nm.tif Caption : the hrtem image of cqds (10 nm) File Name : figure s2 20 nm.tif Caption : the hrtem image of cqds (20 nm) File Name : figure s3.tif Caption : fluorescence spectrum of mox File Name : figure s4.tif Caption : effect of solution ph on fluorescence intensity of cqds File Name : figure s5.tif Caption : effect of solution ph on cqds/mox f497/f435 File Name : figure s6.tif Caption : cqds fluorescence intensity changes with storage time File Name : figure s7.tif Caption : relationship between cqds/mox f497/f435 and reaction time