We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Optical properties of p-conjugated donor-acceptor systems with controlled hyperpolarizability.
- Authors
Piryatinski, Yu. P.; Sevryukova, M. M.
- Abstract
For supramolecular compounds with donor and acceptor fragments, coupled with each other by the Π-conjugated methyn chain, it was ascertained an influence of Cl and Br atoms on the Π-conjugation and charge transfer in them in molecular and aggregate states. Compound, which contains Br atom, crystallizes into a noncentrosymmetric polar structure and under infrared (1064 nm) laser excitation it is observed the second harmonic generation and intense up-conversion photoluminescence in the visible spectral region. For compounds containing Cl atom, when passing into a crystalline state, only up-conversion photoluminescence is observed, which can be considered as twophoton excited. Possible mechanisms of intramolecular charge transfer and collective interactions in investigated molecular structures under one- and two-photon excitation are considered.
- Subjects
OPTICAL properties; SUPRAMOLECULAR chemistry; CHARGE transfer; ATOMS; MOLECULAR structure; PHOTOLUMINESCENCE
- Publication
Semiconductor Physics, Quantum Electronics & Optoelectronics, 2008, Vol 11, Issue 3, p292
- ISSN
1560-8034
- Publication type
Article
- DOI
10.15407/spqeo11.03.292