Reversible Polymerisation als Ursache neuartiger Absorptionsbanden von Farbstoffen

Scheibe, G.

doi:10.1007/bf01509409

Cited by 219 publications

(62 citation statements)

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“…Since every one of these species may occur as four torsional stereoisomers the total number of species reaches 160. Eventually, these species may be involved in oligomerization equilibria, for example, in the form of H-or J-aggregates, [40] which renders the number of possible species more or less innumerable. The following sections will focus upon experimental as well as semiempirical or quantum chemical results that clarify the important parts or knots in this complex equilibrium system under certain conditions.…”

Section: Structural Complexity Resulting From the Intertwining Of Equmentioning

confidence: 99%

From the Photosensitizer Hypericin to the Photoreceptor Stentorin— The Chemistry of Phenanthroperylene Quinones

Falk¹

1999

Angew. Chem. Int. Ed.

199

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Section: Structural Complexity Resulting From the Intertwining Of Equmentioning

confidence: 99%

From the Photosensitizer Hypericin to the Photoreceptor Stentorin— The Chemistry of Phenanthroperylene Quinones

Falk¹

1999

Angew. Chem. Int. Ed.

199

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“…[*] Since the aggregates formed in solution have a rod-like shape they can be oriented by flow. [7].…”

Section: Solutionmentioning

confidence: 95%

Scheibe Aggregates

1995

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Scheibe agregates (J‐aggregates), highly ordered systems of strongly interacting chromophores (e.g. see figure), are characterized by a strong and narrow absorption band shifted to lower energy with respect to the band of the monomer, and a narrow resonance emission band with a very small Stokes shift. The formation of such aggregates, their organization and reorganization, their structure and their optical and photophysical properties are reviewed.

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“…Linear optical spectroscopy is an important tool to obtain information about multichromophoric complexes like J-aggregates [1][2][3][4][5][6] or photosynthetic light harvesting complexes [7][8][9][10]. In particular the combination of linearly polarized spectra and circular dichroism spectra (difference of absorption of left and right circularly polarized light) allows one to draw many conclusions about the (often unknown) arrangement of the chromophores [5,11] or to extract unknown electronic transition energies (often termed site energies) of the chromophores [9,10].…”

Section: Introductionmentioning

confidence: 99%

Non-Markovian Quantum State Diffusion for temperature-dependent linear spectra of light harvesting aggregates

Ritschel

Suess

Möbius

et al. 2015

The Journal of Chemical Physics

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Non-Markovian Quantum State Diffusion (NMQSD) has turned out to be an efficient method to calculate excitonic properties of aggregates composed of organic chromophores, taking into account the coupling of electronic transitions to vibrational modes of the chromophores. NMQSD is an open quantum system approach that incorporates environmental degrees of freedom (the vibrations in our case) in a stochastic way. We show in this paper that for linear optical spectra (absorption, circular dichroism) no stochastics is needed, even for finite temperatures. Thus, the spectra can be obtained by propagating a single trajectory. To this end we map a finite temperature environment to the zero temperature case using the so-called thermofield method. The resulting equations can then be solved efficiently by standard integrators.

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Reversible Polymerisation als Ursache neuartiger Absorptionsbanden von Farbstoffen

Cited by 219 publications

References 0 publications

From the Photosensitizer Hypericin to the Photoreceptor Stentorin— The Chemistry of Phenanthroperylene Quinones

From the Photosensitizer Hypericin to the Photoreceptor Stentorin— The Chemistry of Phenanthroperylene Quinones

Scheibe Aggregates

Non-Markovian Quantum State Diffusion for temperature-dependent linear spectra of light harvesting aggregates

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