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
Electronic Energy Migration in Microtubules
Aarat P. Kalra,Alfy Benny,Sophie M. Travis,Eric Adriano Zizzi,Austin Morales-Sanchez,Daniel G. Oblinsky,Travis J. A. Craddock,Stuart R. Hameroff,M. Bruce MacIver,Jack A. Tuszynski,Sabine Petry,Roger Penrose,Gregory D. Scholes +12 more
TL;DR: It is demonstrated that electronic energy can diffuse over 6.6 nm in microtubules, and it is found that the presence of the anesthetics etomidate and isoflurane reduce exciton diffusion.
Journal ArticleDOI
Dozy-Chaos Mechanics for a Broad Audience
TL;DR: Egorov et al. as discussed by the authors introduced a new and universal theoretical approach to the dynamics of the transient state in elementary physico-chemical processes, called dozy-chaos mechanics.
Journal ArticleDOI
Perfluorophenyl-Directed Giant Porphyrin J-Aggregates
Mitsuhiko Morisue,Ikuya Ueno,Kunihiko Muraoka,Shun Omagari,Shun Omagari,Takayuki Nakanishi,Takayuki Nakanishi,Yasuchika Hasegawa,Takaaki Hikima,Sono Sasaki +9 more
TL;DR: The molecular arrangement of the J-aggregates was revealed by microbeam glazing-incidence wide-angle X-ray diffraction (GIWAXD), and was in good agreement with the optimized structure generated by density functional theory (DFT) calculations.
Journal ArticleDOI
Self-Aggregation abilities of synthetic bacteriochlorophyll-d analogs bearing a propargyl- or benzyl-type alcohol
Takeo Nakano,Hitoshi Tamiaki +1 more
TL;DR: The propargyl- or benzyl-type alcoholic moiety attached chlorophyll-a derivatives have been synthesized via Pd-mediated coupling reactions as discussed by the authors, and these compounds could act as models of bacteriochlorophyll molecules in the main light-harvesting antenna (chlorosome) of photosynthetic green bacteria.
Journal ArticleDOI
Nanoscale π-conjugated ladders.
Stefanie A. Meißner,Theresa Eder,Tristan J. Keller,David A. Hofmeister,Sebastian Spicher,Stefan-S. Jester,Jan Vogelsang,Stefan Grimme,John M. Lupton,Sigurd Höger +9 more
TL;DR: In this paper, the authors introduce the concept of rigidification in which two rigid-rod polymer chains are repeatedly covalently associated along their contour by stiff molecular connectors, leading to rigid ladder structures with well-defined conjugated rails.
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.
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Organic Thin Film Transistors for Large Area Electronics
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Journal ArticleDOI
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