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Photophysical Properties of Organic and Organometallic molecules
KTH, Superseded Departments, Biotechnology.
2004 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

Highly correlated quantum chemical methods have been appliedto study the photophysical properties of substituted benzenes.With the inclusion of spin-orbit coupling, the phosphorescencesof these molecules have been calculated usingMulti-CongurationalSelf- Consistent Field (MCSCF) quadraticresponse theory. The Herzberg-Teller approximation has beenadopted to evaluate the vibronic contributions tophosphorescence.

The performance of hybrid density functional theory (DFT) atthe B3LYP level is examined in comparison to the MP2, CCSD andCCSD(T) methods for the geometry and permanent dipole moment ofp-aminobenzoic acid. The time-dependent DFT/B3LYP method isapplied to calculate the two-photon absorption of a series ofZinc-porphyrin derivatives in combination with a two-statemodel. The transitions between excited singlet and tripletstates of Zinc and Platinum based organometallic compounds havebeen computed using DFT quadratic response theory. The resultsare used to simulate the non-linear propagation of laser pulsesthrough these materials utilizing a dynamical wave propagationmethod.

Place, publisher, year, edition, pages
Stockholm: Bioteknologi , 2004. , 38 p.
Keyword [en]
molecule, two-photon absorption, singlet-triplet. spin-orbit, CASSCF, emission, phosphorescence, DFT, B3LYP
URN: urn:nbn:se:kth:diva-1739ISBN: 91-7283-736-5OAI: diva2:7704
Available from: 2004-06-28 Created: 2004-06-28 Last updated: 2012-03-21

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