Mario Saletti, Marco Paolino, Jacopo Venditti, Gianluca Giorgi, Claudia Bonechi, Alessandro Donati, Claudio Rossi, Germano Giuliani, Antonella Caterina Boccia, Chiara Botta, Lluís Blancafort and Andrea Cappelli*,
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Photophysical and Photochemical Features of Lysine Derivatives Bearing Two Triphenylaminocinnamic-Based Fluorophores
A Morita–Baylis–Hillman adduct (MBHA) derivative bearing a triphenylamine (TPA) moiety was previously found to react with Nα-acetyl-l-lysine methyl ester with the formation of the corresponding diadduct derivative as the major reaction product and a monoadduct as the minor one. The characterization of photochemical features of the diadduct bearing two triphenylaminocinnamic (TPAC) fluorophores suggested that this compound shows the tendency to undergo the [2 + 2] photocycloaddition reaction. This hypothesis was evaluated in the present study in both the diadduct derivatives obtained with Nα-acetyl-l-lysine methyl ester and Nα-acetyl-l-lysine. The hypothesis was confirmed in the case of the diadduct derivative obtained from Nα-acetyl-l-lysine methyl ester, whereas the UV-A irradiation of the diadduct derivative obtained from Nα-acetyl-l-lysine led to the formation of a strongly emissive (QY = 69%, λem = 460 nm) symmetric dimer.
期刊介绍：
An essential criterion for acceptance of research articles in the journal is that they provide new physical insight. Please refer to the New Physical Insights virtual issue on what constitutes new physical insight. Manuscripts that are essentially reporting data or applications of data are, in general, not suitable for publication in JPC B.
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