molecules and of their quadrupolar and dipolar counterparts are reported for a series of solvents with varying polarity. The molecules possess a tri-phenylamine electron donating group and mono-cyano acceptors while olefinic and acetylenic π-linkers have been used. Branching led to an increase of the molar extinction coefficient and to a slight bathochromic shift of the absorption spectra while the
对于极性变化的一系列溶剂,报道了两个三足分子及其四极和偶极对应物的光物理和双光子吸收(2PA)特性。该分子具有
三苯胺给电子基团和单
氰基受体,而已使用烯烃和炔属π-连接基。支化导致摩尔消光系数的增加和吸收光谱的红移,而荧光量子产率降低,但它们保持在较高的值。三足体分子的溶剂变色测量显示具有极性的发射状态。2PA横截面通常在分支时增加,但观察到的行为很大程度上取决于溶剂的类型。