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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Highly fluorescent carbon nitride oligomer with aggregation-induced emission characteristic for plastic staining.
TL;DR: In this article , a solid-phase thermal condensation of 2,4-diamino-6-phenyl-1,3,5-triazine (DPT) at 350 °C was used to synthesize a fluorescent carbon nitride oligomer with aggregation-induced emission (AIE) characteristic.
Journal ArticleDOI
Modeling energy transfer and absorption spectra in layered metal–organic frameworks based on a Frenkel–Holstein Hamiltonian
TL;DR: In this paper , the role of both long-range excitonic and short-range charge transfer coupling as well as their dependency on reorganization energy on through-space charge transfer in layered MOFs is investigated.
Journal ArticleDOI
Synthesis and Living Crystallization-Driven Self-Assembly of Backbone Asymmetric and Symmetric π-Conjugated Oligo(p-phenylene ethynylene)-Based Block Copolymers
TL;DR: The backbone symmetry of π-conjugated segments is one of the most important structural factors that affect their crystalline behaviors as discussed by the authors , however, the influence of backbone symmetry on living blocks on living organisms is unknown.
Journal ArticleDOI
Charge‐Segregated Stacking Structure with Anisotropic Electric Conductivity in NIR‐Absorbing and Emitting Positively Charged π‐Electronic Systems
Azhar Rasul,hyarisiqgc +1 more
TL;DR: In this article , a π-electronic cation with an augmented dipole was synthesized by methylation of zwitterionic squarylium, and the ion pairs provided solid-state assemblies based on cation stacking.
Journal ArticleDOI
Visible Light-induced Emission Enhancement in Aggregates of an Azobenzene Derivative
Sadahiro Masuo,Mitsuaki Yamauchi +1 more
TL;DR: The aggregation-induced emission (AIE) behaviors of an azobenzene derivative with two naphthalenes were studied by spectroscopic and microscopic measurements in this article .
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.
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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.