To demonstrate the validity of o-carborane as an electronic anchoring unit for constructing robust conjugation system, bi(benzo[b]thiophene)-fused o-carborane was designed and synthesized. From the optical measurements, clear vibrational bands not only in the absorption but also in the emission spectra were observed. These data mean that the electronic delocalization should occur on the rigid template. In the cyclic voltammograms, the reversible reduction waves at −1.72eV and −2.37eV were detected that originated from the electron-accepting ability of o-carborane. It is suggested that o-carborane should be the versatile unit for constructing robust conjugation with electron-accepting ability.

中文翻译：

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联苯并[b]噻吩稠合的高刚性共轭体系的合成及性能

为了证明邻-碳硼烷作为电子锚固单元构建稳固共轭体系的有效性，设计并合成了双（苯并[b]噻吩）-稠合的邻-碳硼烷。从光学测量中，不仅在吸收中而且在发射光谱中观察到清晰的振动带。这些数据意味着电子离域应在刚性模板上进行。在循环伏安图中，检测到在-1.72eV和-2.37eV处可逆的还原波，这些还原波是由邻碳硼烷的电子接受能力引起的。有人建议，邻-碳硼烷应该是构建具有电子接受能力的牢固共轭的通用单元。