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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Collective States in 2D Molecular Monolayers
Sabrina Juergensen,Nikolai Severin,Sumaya Ifland,Jürgen P. Rabe,Niclas S. Mueller,Stephanie Reich +5 more
TL;DR: In this paper , the authors measured the optical response of a perylene-derivative MePTCDI on two-dimensional materials, and they found that the collective states persist even for 1-10% random variation in the molecular position and in the transition frequency.
Journal ArticleDOI
The effect of alkoxyl groups on the photoproperties of meta-octasubstituted tetraphenyl porphyrins
Chen Chun-Hui,Congyan Liu,Liu Bo +2 more
TL;DR: In this article , the meso-tetraphenyl porphyrin was taken as the parent chromophore unit to investigate the substituent-group effect on the luminescence properties of porphrin-based complexes.
Thermalization of open quantum systems using the multiple-Davydov-D2 variational approach
TL;DR: Jaku et al. as discussed by the authors proposed a thermalization approach to the multiple-Davydov-D2 trial wave function for simulation of relaxation dynamics and spectroscopic signals of open quantum systems using the timedependent Dirac-Frenkel variational principle.
Journal ArticleDOI
Tracking Exciton Diffusion and Exciton Annihilation in Single Nanoparticles of Conjugated Polymers by Photon Correlation Spectroscopy
Jakob Schedlbauer,Sabrina Streicher,Michael Forster,Ullrich Scherf,Jan Vogelsang,John M. Lupton +5 more
TL;DR: In this article , single multichain nanoparticles of ladder-type poly(para-phenylene) (LPPP) were examined for single photon antibunching and bunching.
References
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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.
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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.