spiroindoline-benzopyrans with electron-withdrawing groups in the indoline fragment were obtained. These compounds exhibit positive P- and T-type photochromism. Structural correlations of the spectrokinetic properties depending on the variation of substituents in the indoline part of the spiropyran molecules were established. Electronwithdrawing groups were found to cause a bathochromic shift of the long-wavelength
获得了在二氢
吲哚片段中具有吸电子基团的新
苯并恶唑基取代的螺二氢
吲哚-苯并
吡喃。这些化合物表现出正 P 型和 T 型光致变色。建立了取决于螺
吡喃分子二氢
吲哚部分中取代基变化的光谱动力学特性的结构相关性。与未取代的螺
吡喃相比,吸电子基团被发现会导致部
花青异构体的长波长吸收最大值发生红移,并缩短其寿命。相反,给电子基团的引入导致吸收最大值的低色移和螺
吡喃的有色异构体的寿命增加。