[EN] NOVEL ORGANIC COMPOUND AND ELECTROCHROMIC DEVICE INCLUDING THE SAME<br/>[FR] NOUVEAU COMPOSÉ ORGANIQUE ET DISPOSITIF ÉLECTROCHROME LE COMPRENANT
申请人:CANON KK
公开号:WO2012002185A1
公开(公告)日:2012-01-05
Provided is the novel electronic compound represented by General Formula [1] that is excellent in oxidation-reduction repetition and highly transparent when bleached and does not show optical absorption in the visible light region. [wherein R1, A, A', and n have the designation cited in claim 1.]
taking advantage of an unexpected regioselectivity of intramolecular Scholl reactions on pentaphenylene compounds that favors distorted [5]helicenes over their flat counterparts, a new synthetic approach to twisted graphene nanoribbons has been designed based on side‐fused di‐tert‐butyl‐[5]helicene fragments. Syntheses of both small monomers and dimers have been achieved and their structures have been studied
With the aim of opening an efficient access to large and sterically crowded polycyclic arenes as well as improving insight into the geometrical preferences of the Scholl reaction, a versatile synthesis strategy has been developed to form a family of flexible yet strongly crowded substrates for multiple dehydrocyclizations. Their intramolecular Scholl reactions lead with high selectivity either to considerably twisted species where the initial C3 symmetry is maintained, or to strongly rearranged products where the formation of multiple [6]helicene fragments is avoided by the formation of unusual hexa[7]circulene moieties under loss of the C3 symmetry.