The SAC (symmetry adapted cluster)/SAC-CI method is applied to the ground and excited states of magnesium porphin (MgP). The rr interaction between the Mg atom and the porphin ring is small and, therefore, the essential difference between MgP and free base porphin (FBP) lies in symmetry; the former
Excited States of Free Base Phthalocyanine Studied by the SAC-CI Method
✍ Scribed by Toyota, Kazuo; Hasegawa, Jun-ya; Nakatsuji, Hiroshi
- Book ID
- 121199733
- Publisher
- American Chemical Society
- Year
- 1997
- Tongue
- English
- Weight
- 254 KB
- Volume
- 101
- Category
- Article
- ISSN
- 1089-5639
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The SAC (symmetry adapted clusteO/SAC-C! method is applied to calculations of the ground and excited states of free base tetrazaporphin (FBTAP). The electronic spectrum is reproduced in fairly good agreement with experiments, and unknown absorption bands in the energy region higher than 4 eV are pre
## Abstract Excited states of fluorescent proteins were studied using symmetry‐adapted cluster‐configuration interaction (SAC‐CI) method. Protein‐environmental effect on the excitation and fluorescence energies was investigated. In green fluorescent protein (GFP), the overall protein‐environmental