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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Nitrile-substituted 2-(oxazolinyl)-phenols: minimalistic excited-state intramolecular proton transfer (ESIPT)-based fluorophores
TL;DR: In this paper, a minimalistic single-benzene, excited-state intramolecular proton transfer (ESIPT)-based fluorophores were presented as powerful solid-state emitters.
Journal ArticleDOI
Control of self-assembly pathways toward conglomerate and racemic supramolecular polymers.
TL;DR: It is demonstrated that homochiral aggregation of the racemic mixture leads to the formation of two types of supramolecular conglomerates under kinetic control, while under thermodynamic control heterochiral aggregating is preferred, affording a racemic supramolescular polymer.
Journal ArticleDOI
Efficient Organic Light-Emitting Transistors Based on High-Quality Ambipolar Single Crystals.
Yuejuan Wan,Jian Deng,Wanling Wu,Jiadong Zhou,Quan Niu,Haoyuan Li,Huakang Yu,Cheng Gu,Yuguang Ma +8 more
TL;DR: A cyano-substituted styrene derivative is synthesized, and successfully prepared to lamellate single crystals through precisely controlling the crystal growth conditions, resulting in single-component light-emitting transistors based on the lam-ellate crystals.
Journal ArticleDOI
Design Principles for Two-Dimensional Molecular Aggregates Using Kasha’s Model: Tunable Photophysics in Near and Short-Wave Infrared
TL;DR: In this article, two cyanine dyes with sheet-like morphologies and high molar absorptivities (e ≈ 105 M −1 cm−1) were used to construct two-dimensional aggregates whose slip is controlled by steric hindrance.
Journal ArticleDOI
1‑Mono- and 1,7-Disubstituted Perylene BisimideDyes with Voluminous Groups at Bay Positions: In Search for HighlyEffective Solid-State Fluorescence Materials
Matthias Stolte,Tim Schembri,Jasmin Süß,David Schmidt,Ana-Maria Krause,Myroslav O. Vysotsky,Frank Würthner +6 more
TL;DR: In this paper, a series of 1-mono-and 1,7-disubstituted perylene bisimides (PBIs) with voluminous phenoxy groups at bay positions has been synthesized.
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
TL;DR: In this article, the authors considered a radiating gas as a single quantum-mechanical system, and the energy levels corresponding to certain correlations between individual molecules were described, where spontaneous emission of radiation in a transition between two such levels leads to the emission of coherent radiation.
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.