Vibronic Excitons in Molecular Systems
(2012) KEMR19 20112Department of Chemistry
- Abstract
- Absorption and emission of photons by any molecule is strongly in
uenced by the molecular environment. When several chromophores are packed together
their spectral properties are known to be altered and this is canonically ex-
plained by quantum theory as electromagnetic interactions between the dipole
moments. If the interaction is strong, the absorption process might be best
described as the creation of a so-called exciton. These are not fully understood,
especially not in biologically relevant systems. In addition, electronic transitions
are in some molecules accompanied by vibrational transitions by such a high
probability that these cannot be neglected. Models including these eects have
not been used for many systems so far.... (More) - Absorption and emission of photons by any molecule is strongly in
uenced by the molecular environment. When several chromophores are packed together
their spectral properties are known to be altered and this is canonically ex-
plained by quantum theory as electromagnetic interactions between the dipole
moments. If the interaction is strong, the absorption process might be best
described as the creation of a so-called exciton. These are not fully understood,
especially not in biologically relevant systems. In addition, electronic transitions
are in some molecules accompanied by vibrational transitions by such a high
probability that these cannot be neglected. Models including these eects have
not been used for many systems so far. The peridinin-binding protein complex
PCP is an interesting system for exciton investigations but the vibrational
coupling in carotenoids need to be accounted for. The present work deals with
this problem in PCP. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/2862852
- author
- Andersson, Andreas LU
- supervisor
- organization
- course
- KEMR19 20112
- year
- 2012
- type
- H2 - Master's Degree (Two Years)
- subject
- keywords
- Kemisk fysik
- language
- English
- id
- 2862852
- date added to LUP
- 2012-08-14 14:09:33
- date last changed
- 2012-08-14 14:09:33
@misc{2862852, abstract = {{Absorption and emission of photons by any molecule is strongly in uenced by the molecular environment. When several chromophores are packed together their spectral properties are known to be altered and this is canonically ex- plained by quantum theory as electromagnetic interactions between the dipole moments. If the interaction is strong, the absorption process might be best described as the creation of a so-called exciton. These are not fully understood, especially not in biologically relevant systems. In addition, electronic transitions are in some molecules accompanied by vibrational transitions by such a high probability that these cannot be neglected. Models including these eects have not been used for many systems so far. The peridinin-binding protein complex PCP is an interesting system for exciton investigations but the vibrational coupling in carotenoids need to be accounted for. The present work deals with this problem in PCP.}}, author = {{Andersson, Andreas}}, language = {{eng}}, note = {{Student Paper}}, title = {{Vibronic Excitons in Molecular Systems}}, year = {{2012}}, }