Peripheral Stepwise Degradation Of A Porphyrin J-Aggregate
Document Type
Article
Publication Date
10-1-2012
Published In
Inorganic Chemistry
Abstract
For metalation of the acidic form of tetrakis(4-sulfonatophenyl)porphyrin (dianionic H₄TPPS₄) by Cu(II), the order of reagent mixing determines the rate and mechanism of CuTPPS₄ formation. When copper salts are added last, the kinetic profile is fit as a (pseudo)-first-order process. However, J-aggregates of the H₄TPPS₄ porphyrin are rapidly formed at pH similar to 3 when Cu(II) salts are incorporated in solution prior to porphyrin addition. The subsequent porphyrin units metalation leads to the disassembling of these arrays via a pseudo-zero-order kinetic profile, suggesting an attack of the metal ion at the rims of the nanostructure.
Recommended Citation
I. Occhiuto, G. de Luca, M. Trapani, L. M. Scolaro, and Robert F. Pasternack.
(2012).
"Peripheral Stepwise Degradation Of A Porphyrin J-Aggregate".
Inorganic Chemistry.
Volume 51,
Issue 19.
10074-10076.
DOI: 10.1021/ic301570p
https://works.swarthmore.edu/fac-chemistry/141
