Surface states in molecular chains with strong mixing of Frenkel and charge-transfer excitons
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
We discuss the spectrum of excitons in quasi-one-dimensional crystals with strong orbital overlap between neighboring molecules. In such crystals, the energy difference between the lowest Frenkel exciton and charge-transfer exciton becomes small and their strong mixing determines the nature of the lowest energy states. We demonstrate here that in finite chains, simultaneously with excitonic `bulk' states also `surface' states can appear. The `surface' states are localized at the end of the chain and can be blue- or red-shifted in comparison with the `bulk' states. We discuss the contribution of these states to the absorption and fluorescence spectrum of molecular chains.
Details
Original language | English |
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Pages (from-to) | 308-316 |
Number of pages | 9 |
Journal | Chemical Physics Letters |
Volume | 325 |
Issue number | 1-3 |
Publication status | Published - 2000 |
Peer-reviewed | Yes |
External IDs
Scopus | 0000664862 |
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