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Resonant-Convergent PCM Response Theory for the Calculation of Second Harmonic Generation in Makaluvamines A-V: Pyrroloiminoquinone Marine Natural Products from Poriferans of Genus Zyzzya
University of Basque Country, Spain; University of Basque Country, Spain; DIPC, Spain; University of Coimbra, Portugal.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Teoretisk kemi. Linköpings universitet, Tekniska fakulteten.
2015 (engelsk)Inngår i: Journal of Physical Chemistry A, ISSN 1089-5639, E-ISSN 1520-5215, Vol. 119, nr 21, s. 5368-5376Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The first-order hyperpolarizability, beta, has been calculated for a group Of marine natural products, the makaluvamines. These compounds possess a common Cationic pyrroloiminoquinone structure that is substituted to varying degrees. Calculations at the MP2 level indicate that makaluvamines possessing phenolic side Chains conjugated with the pyrroloiminoquinone moiety display large beta values, while breaking this conjugation leads to a dramatic decrease in the calculated hyperpolarizability. This is consistent with a charge-transfer donor-pi-acceptor (D-pi-A) structure type, characteristic of nonlinear optical Chromophores. Dynamic hyperpolarizabilities calculated using resonance-convergent time-dependent density functional theory coupled to polarizable continuum model (PCM) solvation suggest that significant resonance, enhancement, effects can be expected for incident radiation with wavelengths around 800 nm. The results of the current Work suggest that the pyrroloiminoquinone moiety represents a potentially useful new Chromophore subunit, in particular for the development of molecular probes for biological imaging. The introduction of solvent solute interactions in the theory is conventionally made in a density matrix formalism, and the Present work will provide detailed account of the approximations that need to be introduced in wave function theory, and our program implementation. The program implementation as such is achieved by a mere combination of existing modules from previous developments, and it is here only briefly reviewed.

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American Chemical Society , 2015. Vol. 119, nr 21, s. 5368-5376
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URN: urn:nbn:se:liu:diva-119799DOI: 10.1021/jp5102362ISI: 000355495100033PubMedID: 25584854OAI: oai:DiVA.org:liu-119799DiVA, id: diva2:827241
Merknad

Funding Agencies|Swedish Research Council [621-2010-5014]; Portuguese Foundation for Science and Technology [PTDC/FIS/103587/2008]; Donostia International Physics centre; Centre de Fisica de Materiales, University of the Basque Country

Tilgjengelig fra: 2015-06-26 Laget: 2015-06-26 Sist oppdatert: 2017-12-04

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