Origin of the anomalous two-photon absorption in fluorescent protein DsRed |
| |
Authors: | Nifosì Riccardo Luo Yi |
| |
Institution: | NEST-CNR INFM and Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy. r.nifosi@sns.it |
| |
Abstract: | The red fluorescent protein DsRed displays a two-photon excitation band around 760 nm which is not accompanied by any feature in the corresponding one-photon spectral region (380 nm). By means of time-dependent density functional theory, we are able to explain such an effect, as arising from an electronic excitation of the DsRed chromophore with ability to couple with a charge-transfer state, through an effective two-photon absorption channel. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|