Please use this identifier to cite or link to this item: https://doi.org/10.1021/ic102441b
Title: Metallacyclophanes of 1,6-bis(diphenylphosphino)pyrene: Excimeric emission and effect of oxygen on stability of the rings
Authors: Hu, J. 
Nguyen, M.-H.
Yip, J.H.K. 
Issue Date: 15-Aug-2011
Citation: Hu, J., Nguyen, M.-H., Yip, J.H.K. (2011-08-15). Metallacyclophanes of 1,6-bis(diphenylphosphino)pyrene: Excimeric emission and effect of oxygen on stability of the rings. Inorganic Chemistry 50 (16) : 7429-7439. ScholarBank@NUS Repository. https://doi.org/10.1021/ic102441b
Abstract: 1,6-Bis(diphenylphosphino)pyrene (L) was reacted with Ag(I) and Cu(I) ions to form metallacyclophanes [Ag2L2(OTf)2] (1), [Cu2L2(MeCN)4]2+ (2), and [Cu 2L2I2] (3) which consisted of two cofacial pyrenyl rings. 1 and 2 exhibited intramolecular excimeric emissions which along with the UV-vis absorption were invoked in understanding the solution dynamics of the metallocyclophanes. The metallacyclophanes were stable toward ring-opening dissociation at concentration as low as 10-7 M. However, air oxidation of the dangling PPh2 groups arising from metal-ligand bond dissociation drove the equilibrium toward dissociation and produced the oxidized phosphine 1,6-bis(diphenylphosphine oxide)pyrene. © 2011 American Chemical Society.
Source Title: Inorganic Chemistry
URI: http://scholarbank.nus.edu.sg/handle/10635/94212
ISSN: 00201669
DOI: 10.1021/ic102441b
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