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Molecules 2013, 18(4), 4091-4119;

Coordination Programming of Photofunctional Molecules

Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Authors to whom correspondence should be addressed.
Received: 23 January 2013 / Revised: 15 March 2013 / Accepted: 27 March 2013 / Published: 5 April 2013
(This article belongs to the Special Issue New Trends in Photochemistry)
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Our recent achievements relating to photofunctional molecules are addressed. Section 1 discloses a new concept of photoisomerization. Pyridylpyrimidine-copper complexes undergo a ring inversion that can be modulated by the redox state of the copper center. In combination with an intermolecular photoelectron transfer (PET) initiated by the metal-to-ligand charge transfer (MLCT) transition of the Cu(I) state, we realize photonic regulation of the ring inversion. Section 2 reports on the first examples of heteroleptic bis(dipyrrinato)zinc(II) complexes. Conventional homoleptic bis(dipyrrinato)zinc(II) complexes suffered from low fluorescence quantum yields, whereas the heteroleptic ones feature bright fluorescence even in polar solvents. Section 3 describes our new findings on Pechmann dye, which was first synthesized in 1882. New synthetic procedures for Pechmann dye using dimethyl bis(arylethynyl)fumarate as a starting material gives rise to its new structural isomer. We also demonstrate potentiality of a donor-acceptor-donor type of Pechmann dye in organic electronics. View Full-Text
Keywords: coordination programming; photochemistry; transition metal complexes; organic electronics; photoisomerization; fluorescence coordination programming; photochemistry; transition metal complexes; organic electronics; photoisomerization; fluorescence
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Sakamoto, R.; Kusaka, S.; Hayashi, M.; Nishikawa, M.; Nishihara, H. Coordination Programming of Photofunctional Molecules. Molecules 2013, 18, 4091-4119.

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