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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Regiospecific <i>N</i>-alkyl substitution tunes the molecular packing of high-performance non-fullerene acceptors
TL;DR: In this paper , a series of benzotriazole (Bz) fused-ring π-core has been designed and synthesized to achieve high short-circuit current density (Jsc) in organic solar cells.
Journal ArticleDOI
Emergent chiroptical properties in supramolecular and plasmonic assemblies
N. S. Shahana Nizar,Meleppatt Sujith,K. Swathi,K. Swathi,Cristina Sissa,Anna Painelli,K. George Thomas +6 more
TL;DR: In this paper, the authors provide a comprehensive description of the origin of chiroptical properties of supramolecular and plasmonic assemblies in the UV-visible region of the electromagnetic spectrum.
Journal ArticleDOI
Intramolecular π-stacked perylene-diimide acceptors for non-fullerene organic solar cells
Jianquan Zhang,Fujin Bai,Yunke Li,Huawei Hu,Bin Liu,Xinhui Zou,Han Yu,Jiachen Huang,Ding Pan,Harald Ade,He Yan +10 more
TL;DR: In this paper, two isomeric PDI-tetramers with different functionalization positions (α- and β-positions) of naphthalene, and thus different extents of intramolecular packing were synthesized and systematically studied.
Journal ArticleDOI
Recent trends in molecular aggregates: An exploration of biomedicine
Jeong Woo Heo,Dhiraj P. Murale,Hey Young Yoon,Vishnu Arun,Sang-Kee Choi,Eunha Kim,Jun-Seok Lee,Se-Hong Kim +7 more
TL;DR: The changes in photophysical properties of conventional fluorophores and their biological applications are discussed, followed by the effects of conventional drug molecule‐aggregates on drug discovery and therapeutics development, and nano‐sized supramolecular aggregates used in imaging and therapeutic purposes, with a focus on in vivo utilization.
Journal ArticleDOI
Double helical π-aggregate nanoarchitectonics for amplified circularly polarized luminescence
TL;DR: In this article , a selective-recognized and chirality-matched co-assembly strategy for the fabrication of fluorescent π-amino acids into double helical πaggregates, which show exceptional strong circularly polarized luminescence (CPL), was reported.
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.