AI Article Synopsis
- Peripheral nitro groups significantly increase the two-photon absorption cross-section of trans-A(2)B(2)-porphyrins with two phenylethynyl groups, boosting it by over ten times.
- The highest recorded values reach up to 1000 GM due to optimal conditions for resonance enhancement.
- This enhancement is linked to a decrease in energy levels and stronger two-photon allowed transitions in the Soret region.
Article Abstract
We show that peripheral nitro groups enhance the maximum two-photon absorption cross-section of trans-A(2)B(2)-porphyrins bearing two phenylethynyl substituents by more than one order of magnitude. Maximum values as high as 1000 GM result from realization of suitable conditions for effective resonance enhancement along with a lowering of the energy and intensification of the two-photon allowed transitions in the Soret region.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4090231 | PMC |
| http://dx.doi.org/10.1002/cphc.201200507 | DOI Listing |
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