Si-, Ge-, and Sn-Bridged Biaryls as π-Conjugated Element Blocks

  • Yohei Adachi
  • Joji Ohshita


Biaryls, such as bithiophene and bipyridyl, are intramolecularly bridged by group 14 heavy elements, silicon, germanium, and tin, to produce element blocks having condensed tricyclic systems with silole, germole, and stannole as the center ring. These bridged biaryls exhibit interesting properties arising from the characteristics of both the biaryl units and the bridging elements. In this chapter, recent development in functional organic materials containing the bridged biaryl systems as the core structure is described. The electronic states and properties of the bridged biaryls are discussed on the basis of the results of optical and electrochemical measurements and quantum chemical calculations, to explore how the element bridges contribute to the improvement of desired properties, such as photoluminescent, carrier transport, photovoltaic, and chromic properties.


Dithienometallole Dipyridinometallole Group 14 element Conjugated polymer Optoelectronic application 



The work presented in this chapter was partly supported by a Grant-in-Aid for Scientific Research on Innovative Areas, “New Polymeric Materials Based on Element-Blocks (No. 2401)” (JSPS KAKENHI Grant Number JP24102005).


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© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of Applied Chemistry, Graduate School of EngineeringHiroshima UniversityHiroshimaJapan

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