Abstract
Large first hyperpolarizabilities (β) can result from the combination of donor and acceptor groups separated by a conjugated linker but also from the use of asymmetric unit cell polymers. Quantum chemistry methods including electron correlation effects are used to assess the chain length dependence of β of polymethineimine (PMI), a prototype of this kind of polymers. The evolution of β of PMI upon modification of the bond length alternation is investigated. It is demonstrated that PMI presents a very large β in comparison with usual push-pull molecules.
Original language | English |
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Pages (from-to) | 490-491 |
Number of pages | 2 |
Journal | Synthetic Metals |
Volume | 101 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 May 1999 |