864957-75-5Relevant academic research and scientific papers
Improved synthesis of 2,2′-Dibromo-9,9′-spirobifluorene and its 2,2′-bisdonor-7,7′-bisacceptor-substituted fluorescent derivatives
Chiang, Chih-Long,Shu, Ching-Fong,Chen, Chin-Ti
, p. 3717 - 3720 (2005)
(Chemical Equation Presented) Pure 2,2′-Dibromo-9,9′- spirobifluorene was synthesized by a method that did not involve troublesome dibromination of 9,9′-spirobifluorene or Sandmeyer reaction of 2,2′-diamino-9,9′-spirobifluorene. A series of donor-acceptor orthogonally substituted 9,9′-spirobifluorene was subsequently prepared showing rich variation of fluorescence in solution and in solid state.
Spirobifluorene based small push-pull molecules for organic photovoltaic applications
Dalinot, Clément,Szalóki, Gy?rgy,Dindault, Chloé,Segut, Olivier,Sanguinet, Lionel,Leriche, Philippe
, p. 62 - 69 (2017/01/25)
Four analogous push-pull systems have been synthesized. If the latter all involve the same electron rich diphenylamine termination (D) and π-conjugating spacer (p) they differ from their electron withdrawing groups (A) and more importantly by their linear or 3D structure. Indeed, two push-pull spirobifluorene derivatives, which present two perpendicular D-p-A systems by molecule, are compared to their linear analogues. After description of their syntheses, spectroscopic and electrochemical properties, comforted by theoretical calculations, are discussed and compared. Then, a preliminary evaluation of compounds as active materials in organic solar cells is presented and demonstrates the potential interest of spiro-based derivatives for organic photovoltaics.
