585525-95-7Relevant academic research and scientific papers
Dihedral-angle modulation of meso-meso-linked ZnII diporphyrin through diamine coordination and its application to reversible switching of excitation energy transfer
Shinmori, Hideyuki,Ahn, Tae Kyu,Cho, Hyun Sun,Kim, Dongho,Yoshida, Naoya,Osuka, Atsuhiro
, p. 2754 - 2758 (2003)
The dihedral angle between the two porphyrins in meso-meso-linked ZnII diporphyrin can be modulated effectively by adding 1,7-diaminoheptane, which coordinates at the both ZnII centers (see picture). This mechanical torsion gives rise to a decrease in the energy of the S1 state in the meso-meso-linked ZnII-diporphyrin subunit, and results in the change in direction of the energy transfer in the excited state. This process can be reversed by adding acetic acid.
