A new series of donor-acceptor-donor type trimeric monomers bearing substituted phthalimide units as acceptor units and thiophene and 3,4-ethylenedioxythiophene (EDOT) as donor units was synthesized and characterized. The strength of acceptor units and intramolecular charge transfer between donor and acceptor units were investigated by using electrochemical and optical methods. The main advantage of phthalimide unit over other acceptor units is the ease of its functionalizability. Thus, utilizing this property, a phthalimide derivative (E₂P-POSS) bearing polyhedral oligomeric silsesquioxane (POSS) cage was introduced successfully with EDOT and polymerized electrochemically. The corresponding electroactive polymer, PE₂P-POSS, has a band gap of 1.72 eV and is an electrochromic polymer: gray when neutralized and eggplant purple when oxidized.

合成并表征了一系列新的供体-受体-供体型三聚体单体，其取代的邻苯二甲酰亚胺单元为受体单元，噻吩和3,4-乙撑二氧噻吩（EDOT）为供体单元。通过电化学和光学方法研究了受体单元的强度以及供体和受体之间的分子内电荷转移。邻苯二甲酰亚胺单元相对于其他受体单元的主要优点是易于实现功能化。因此，利用该性质，成功地将带有多面体低聚倍半硅氧烷（POSS）的邻苯二甲酰亚胺衍生物（E ₂ P-POSS）保持架与EDOT一起引入并进行电化学聚合。相应的电活性聚合物PE ₂P-POSS的带隙为1.72 eV，是一种电致变色聚合物：中和后为灰色，氧化后为茄子紫色。