@article{040bd04c2eff4388b86236f650418b18,
title = "Cooperative effects in static polarizabilities and second hyperpolarizabilities of hydrogen-bonded 4-pyridones",
abstract = "We investigate the intermolecular interaction effects on the static polarizabilities (α) and second hyperpolarizabilities (γ) of hydrogen (H)-bonded 4-pyridones, which have been recently found to produce extraordinarily strong H-bonds. The longitudinal α and γ are calculated by the finite-field approach at the HF, MP2 and DFT levels of theory. The increase ratio of γ per monomer for the increase of the number of monomers is found to be significantly enhanced compared to that of α per monomer. This feature suggests the presence of strong cooperative effects on γ originating in the covalent interaction between polarizable π-systems through H-bonds in the virtual excitation processes.",
author = "Ryohei Kishi and Umezaki, \{Shin ya\} and Hitoshi Fukui and Takuya Minami and Kazuki Kubota and Hideaki Takahashi and Masayoshi Nakano",
note = "Funding Information: This work is supported by Grant-in-Aid for Scientific Research (No. 18350007) from Japan Society for the Promotion of Science (JSPS), Grant-in-Aid for Scientific Research on Priority Areas (No. 18066010) from the Ministry of Education, Science, Sports and Culture of Japan, and the global COE (center of excellence) program {\textquoteleft}Global Education and Research Center for Bio-Environmental Chemistry{\textquoteright} of Osaka University.",
year = "2008",
month = mar,
day = "10",
doi = "10.1016/j.cplett.2008.01.083",
language = "English",
volume = "454",
pages = "91--96",
journal = "Chemical Physics Letters",
issn = "0009-2614",
publisher = "Elsevier B.V.",
number = "1-3",
}