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Hui Chen, Wylliam Delaunay, Liujian Yu, Dr. Damien Joly, Zuoyong Wang, Jin Li, Zisu Wang, Dr. Christophe Lescop, Denis Tondelier, Bernard Geffroy, Prof. Zheng Duan, Prof. Muriel Hissler, Prof. François Mathey and Prof. Régis Réau 2,2′-Biphospholes: Building Blocks for Tuning the HOMO–LUMO Gap of π-Systems Using Covalent Bonding and Metal Coordination Angewandte Chemie International Edition 51

Version of Record online: 14 NOV 2011 | DOI: 10.1002/anie.201105924

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A new angle: The insertion of a 2,2′-biphosphole subunit into π-conjugated systems offers a new way to control the HOMO–LUMO gap. Tuning of the dihedral angle (θ) between the two phosphorous heterocycles, either by metal coordination or covalent bonding through the P substitution can lead to control of the band gap. These new π-conjugated systems can be used as emitting materials in white organic light-emitting devices (WOLEDs).

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