Journal ArticleDOI
Expanded Theory of H- and J-Molecular Aggregates: The Effects of Vibronic Coupling and Intermolecular Charge Transfer.
TLDR
This review outlines advances made in understanding the relationship between aggregate structure and photophysics when vibronic coupling and intermolecular charge transfer are incorporated.Abstract:
The electronic excited states of molecular aggregates and their photophysical signatures have long fascinated spectroscopists and theoreticians alike since the advent of Frenkel exciton theory almost 90 years ago. The influence of molecular packing on basic optical probes like absorption and photoluminescence was originally worked out by Kasha for aggregates dominated by Coulombic intermolecular interactions, eventually leading to the classification of J- and H-aggregates. This review outlines advances made in understanding the relationship between aggregate structure and photophysics when vibronic coupling and intermolecular charge transfer are incorporated. An assortment of packing geometries is considered from the humble molecular dimer to more exotic structures including linear and bent aggregates, two-dimensional herringbone and “HJ” aggregates, and chiral aggregates. The interplay between long-range Coulomb coupling and short-range charge-transfer-mediated coupling strongly depends on the aggregate ...read more
Citations
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Intrinsically distinct hole and electron transport in conjugated polymers controlled by intra and intermolecular interactions.
TL;DR: In this paper, the intrinsic factors affecting either electron or hole transport within the same film microstructure of a model copolymer semiconductor are isolated. But the authors do not consider the role of the ground-state intra-and inter-molecular coupling in selectively assisting charge transport.
Journal ArticleDOI
Photophysical and Structural Characterization of Intrinsically Fluorescent Sterol Aggregates.
Peter Reinholdt,Lütje E Joensen,Daniel C. Petersen,Maria Szomek,Anna Mularski,Adam Cohen Simonsen,Jacob Kongsted,Daniel Wüstner +7 more
TL;DR: In this article, the photophysical and structural properties of dehydroergosterol (DHE) in the aggregated state were studied. And the authors showed that DHE can be used to study sterol aggregation by fluorescence spectroscopy and microscopy.
Journal ArticleDOI
Aromatic Ring Overlap Pedals the Nature of Exciton Coupling and Carrier Transport in a Series of Electron-Deficient Anthracenes
TL;DR: In this article , the authors have selected positional isomers of the bis-CF3 substituted derivatives as the possible group of molecules and analyzed their optical and charge carrier mobility in the bulk film state, depending on the spatial overlap of the aromatic core unit.
Journal ArticleDOI
Structural modulation of the photophysical and electronic properties of pyrene-based 3D metal–organic frameworks derived from s-block metals
Christopher N. Coleman,Patrick C. Tapping,Michael T. Huxley,Tak W. Kee,David M. Huang,Christian J. Doonan,Christopher J. Sumby +6 more
TL;DR: In this article, the extent of interchromophore interaction for structurally distinct assemblies of the π-conjugated aromatic ligand 4,4′, 4′,4-4-6-8-pyrenetetrayl) tetrabenzoic acid (H4TBAPy) was studied within two novel metal-organic frameworks (MOFs) via steady-state and time-resolved spectroscopic techniques.
Journal ArticleDOI
Angular orientation between the cores of iron oxide nanoclusters controls their magneto–optical properties and magnetic heating functions
TL;DR: In this article , it was shown that the mosaicity, which measures the misalignment of crystal plane orientation between the nanobricks, governs their magneto-optical properties as well as the magnetic heating functions of iron oxide nanoclusters.
References
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Journal ArticleDOI
Detailed Balance Limit of Efficiency of p‐n Junction Solar Cells
TL;DR: In this article, an upper theoretical limit for the efficiency of p−n junction solar energy converters, called the detailed balance limit of efficiency, has been calculated for an ideal case in which the only recombination mechanism of holeelectron pairs is radiative as required by the principle of detailed balance.
Journal ArticleDOI
Coherence in Spontaneous Radiation Processes
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Journal ArticleDOI
Organic Thin Film Transistors for Large Area Electronics
TL;DR: In this article, the authors present new insight into conduction mechanisms and performance characteristics, as well as opportunities for modeling properties of organic thin-film transistors (OTFTs) and discuss progress in the growing field of n-type OTFTs.
Journal ArticleDOI
Charge transport in organic semiconductors.
Veaceslav Coropceanu,Jérôme Cornil,Demetrio A. da Silva Filho,Yoann Olivier,Robert J. Silbey,Jean-Luc Brédas +5 more
TL;DR: Electronic Coupling in Oligoacene Derivatives: Factors Influencing Charge Mobility, and the Energy-Splitting-in-Dimer Method 3.1.