平衡受溶剂极性影响,因此这类化合物的荧光位置随溶剂极性改变,并有较大的Stokés位移。不同波长荧光所得激发光谱也不同。 竹红菌甲素分子结构如图1,它有两个内氢键。它的荧光在600和650nm处有两峰,但没有较大的Stokés位移(图2),荧光峰也不随溶剂极性明显移动。因两荧光峰寿命不同,所以 The equilibrium is affected by the polarity of the solvent, so the fluorescence positions of these compounds vary with the solvent polarity and have a larger Stokés shift. Excitation spectra of fluorescence at different wavelengths are also different. Hypocrellin molecule structure shown in Figure 1, it has two hydrogen bonds. Its fluorescence has two peaks at 600 and 650 nm, but no large Stokés shift (Figure 2), nor does the fluorescence peak significantly shift with solvent polarity. Due to the different life of two fluorescent peaks, so