Three novel bis(tetraphenylethene) (BTPE) derivatives 1-3 were efficiently synthesized. All the materials exhibited aggregation-induced emission characteristics, and the dynamic light scattering measurments proved that the average diameter of the oxidised analogues 2 and 3 was less than that of the thioether precursor 1 due to the oxidation of the linking S-atom. Linking two tetraphenylethylenes via a sulfur atom with different oxidation states offered compounds which showed reversible mechanofluorochromic behavior. The crystal-to-amorphous phase conversion process was responsible for the mechanofluorochromism. Most notably, sulfone-based BTPE 3 presented polymorphism due to different packing modes, and the three observable morphologies could be interconverted.

有效地合成了三个新颖的双（四苯基乙烯）（BTPE）衍生物1-3。所有材料均表现出聚集诱导的发射特性，并且动态光散射测量证明，由于连接的S原子的氧化，氧化的类似物2和3的平均直径小于硫醚前体1的平均直径。经由具有不同氧化态的硫原子连接两个四苯基乙烯，得到显示出可逆的机械氟致变色行为的化合物。晶体到非晶的相变过程是造成机械荧光致变色的原因。最值得注意的是，基于砜的BTPE 3 由于不同的包装模式，其呈现多态性，并且三个可观察的形态可以互换。