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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Journal ArticleDOI
Interplay between J- and H-type coupling in aggregates of π-conjugated polymers: a single-molecule perspective
Theresa Eder,Jan Vogelsang,Sebastian Bange,Klaas Remmerssen,Daniela Schmitz,Stefan-S. Jester,Tristan J. Keller,Sigurd Höger,John M. Lupton +8 more
TL;DR: A single‐molecule H‐ type aggregate of fixed spacing and variable length of up to 10 nm is introduced and HJ‐type aggregate formation is visualized intuitively in the scatter of single‐ molecule spectra.
Journal ArticleDOI
Doping and Surface Modification of Carbon Quantum Dots for Enhanced Functionalities and Related Applications
Journal ArticleDOI
0D, 1D, and 2D Supramolecular Nanoassemblies of a Porphyrin: Controllable Assembly, and Dimensionality‐Dependent Catalytic Performances
Peng Li,Guojing Xu,Nannan Wang,Bo Guan,Shuiqing Zhu,Shuiqing Zhu,Penglei Chen,Penglei Chen,Minghua Liu,Minghua Liu +9 more
Journal ArticleDOI
A Molecular Strategy to Lock-in the Conformation of a Perylene Bisimide-Derived Supramolecular Polymer.
Adam Ashcraft,Kaixuan Liu,Arindam Mukhopadhyay,Victor Paulino,Chuan Liu,Brianna Bernard,Dalia Husainy,Tina Phan,Jean Hubert Olivier +8 more
TL;DR: It is shown that the covalent tethering of a perylene bisimide-derived supramolecular polymer with a molecular locker enables the formation of a locked superstructure equipped with emergent structure-function relationships.
Journal ArticleDOI
Delayed Fluorescence, Room Temperature Phosphorescence, and Mechanofluorochromic Naphthalimides: Differential Imaging of Normoxia and Hypoxia Live Cancer Cells
TL;DR: The delayed emission of these compounds is sensitive to molecular oxygen; accordingly, these molecules are utilised for differential imaging of normoxia and hypoxia cancer cells.
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.
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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.