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
More filters
Journal ArticleDOI
Plug-and-Play Optical Materials from Fluorescent Dyes and Macrocycles
Christopher R. Benson,Laura Kacenauskaite,Katherine L. VanDenburgh,Wei Zhao,Bo Qiao,Tumpa Sadhukhan,Maren Pink,Junsheng Chen,Sina Borgi,Chun-Hsing Chen,Brad J. Davis,Yoan C. Simon,Krishnan Raghavachari,Bo W. Laursen,Amar H. Flood +14 more
TL;DR: In this article, a small-molecule ionic isolation lattices (SMILES) is proposed to transfer the optical properties of fluorescent dyes to solids. But the lattice is not suitable for high-dimensional optical materials.
Journal ArticleDOI
Stable J‐Aggregation of an aza‐BODIPY‐Lipid in a Liposome for Optical Cancer Imaging
Miffy. H. Y. Cheng,Kara M. Harmatys,Danielle M. Charron,Danielle M. Charron,Juan Chen,Gang Zheng,Gang Zheng +6 more
TL;DR: The synthesis of a novel aza-BODIPY-lipid building block and its self-assembly into a liposomal nanoparticle (BodIPYsome) opens the door for engineering new building blocks in the design of optically stable biophotonic imaging agents.
Journal ArticleDOI
Luminescence in Crystalline Organic Materials: From Molecules to Molecular Solids
Johannes Gierschner,Junqing Shi,Junqing Shi,Begoña Milián-Medina,Daniel Roca-Sanjuán,Shinto Varghese,Soo Young Park +6 more
Journal ArticleDOI
Efficient Multiexciton State Generation in Charge-Transfer-Coupled Perylene Bisimide Dimers via Structural Control
TL;DR: Time-resolved spectroscopic measurements and quantum chemical simulations reveal that efficient SF occurs through the charge transfer assisted mechanism, entailing a large structural fluctuation, which is important considerations in the design of molecular materials for photovoltaic devices.
Journal ArticleDOI
Superchiral near fields detect virus structure
Tarun Kakkar,Chantal Keijzer,Marion Rodier,Tatyana Bukharova,Michael Taliansky,Andrew J. Love,Joel J. Milner,Affar S. Karimullah,Laurence D. Barron,Nikolaj Gadegaard,Adrian J. Lapthorn,Malcolm Kadodwala +11 more
TL;DR: It is demonstrated that chiral electromagnetic near fields, which have both enhanced chiral asymmetry and subwavelength spatial localisation and can detect the icosahedral structure of virus capsids, can detect both the presence and relative orientation of a bound virus capsid.
References
More filters
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.