With facilitated device fabrication because of an enhancement of the Seems to favor intermolecular interactions in the solid states associated 5 In such devices, these systems allow higher photoconversionĮfficiencies than their fluorene analogues. Several examples of SBF-based molecular or polymeric systems haveīeen recently incorporated in organic solar cells (OSCs). 4 In the same manner as dye-sensitized solar cell devices, On the other hand, the presence of bulky groups associated with theģD node can in contrary favor electroluminescence. On one hand, the multiplication of π-conjugated Two perpendicular π-conjugated systems exhibiting identical 1 Among the numerous examples of 3D structures reported, 2 the spirobifluorene (SBF)-based molecules appearĪs promising derivatives for organic electronics as they can present (3D) architectures represents a manner to modulate the degree of intra-Īnd intermolecular interactions in materials. Systems, the elaboration of two-dimensional and even three-dimensional If this procedure reproduces well our experimental resultsįocused on (heterocyclic) SBF compounds, it can be certainly adaptedĪnd generalized to other intramolecular substitutions.Įlectronics can be considered as one-dimensional π-conjugated Synthesis of spiro derivatives using a double aromatic electrophilic Indeed, such calculationĪllows prediction of the thermodynamic and kinetic aspects of the Strategy and provide an efficient predictive tool. Was developed in order to determine clearly the limitation of this Theoretical approach based mainly on the uncommon Fukui dual function Procedure to form fully heterocyclic compounds failed, an original Spiro compounds from 2,2′-dibromobenzophenone. Leading to replacement of 2 phenyl rings by various heterocycles in Herein our efforts to develop a straightforward and efficient synthesis Various heterocycles in place of classical phenyl rings in the spirofluorene Of a simple, robust, and efficient synthetic methodology to introduce Of this remarkable three-dimensional node to be tuned especially for Despite this syntheticĮffort, such structural modification allows the (opto)electronic properties Requires long and complicated synthetic pathways. Synthesis of heterocyclic spirobifluorene (SBF) analogs generally
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