Results 51 to 60 of about 18,119 (229)

Addressing the Frenkel and charge transfer character of exciton states with a model Hamiltonian based on dimer calculations: Application to large aggregates of perylene bisimide.

Journal of Chemical Physics, 2021
To understand the influence of interchromophoric arrangements on photo-induced processes and optical properties of aggregates, it is fundamental to assess the contribution of local excitations [charge transfer (CT) and Frenkel (FE)] to exciton states ...
Sofia Canola, Giuseppe Bagnara, Yasi Dai, G. Ricci, Alessandro Calzolari, F. Negri   +5 more
semanticscholar   +1 more source

Discrete Dimers of Redox-Active and Fluorescent Perylene Diimide-Based Rigid Isosceles Triangles in the Solid State [PDF]

, 2019
The development of rigid covalent chiroptical organic materials, with multiple, readily available redox states, which exhibit high photoluminescence, is of particular importance in relation to both organic electronics and photonics. The chemically stable,
Chen, Tianyang, Cheng, Tao, Goddard, William A., III, Krzyaniak, Matthew D., Liu, Zhichang, Nalluri, Siva Krishna Mohan, Nguyen, Minh T., Patel, Hasmukh A., Stoddart, J. Fraser, Wasielewski, Michael R., Zhou, Jiawang   +10 more
core   +8 more sources

Self‐Assembly of Bowl‐Shaped Naphthalimide‐Annulated Corannulene

ChemistryOpen, 2020
The self‐assembly of a bowl‐shaped naphthalimide‐annulated corannulene of high solubility has been studied in a variety of solvents by NMR and UV/Vis spectroscopy.
Rebecca Renner, Dr. Matthias Stolte, Prof. Dr. Frank Würthner   +2 more
doaj   +1 more source

Pi‐Stacking Enhances Stability, Scalability of Formation, Control over Flexibility, and Circulation Time of Polymeric Filamentous Nanocarriers

Advanced NanoBiomed Research, 2021
Self‐assembling filomicelles (FMs) are of great interest to nanomedicine due to their structural flexibility, extensive systemic circulation time, and amenability to unique “cylinder‐to‐sphere” morphological transitions.
Sophia Li, Sharan Bobbala, Michael P. Vincent, Mallika Modak, Yugang Liu, Evan A. Scott   +5 more
doaj   +1 more source

A supramolecular helix that disregards chirality [PDF]

, 2016
The functions of complex crystalline systems derived from supramolecular biological and non-biological assemblies typically emerge from homochiral programmed primary structures via first principles involving secondary, tertiary and quaternary structures.
A González-Campo, A Klug, A Klug, A Klug, A Sarko, AE Rowan, B Pokroy, Benjamin E. Partridge, BM Rosen, BM Rosen, C Roche, Cécile Roche, Daniela A. Wilson, DR Link, Fumito Araoka, G Natta, G Natta, G Natta, G Ungar, Goran Ungar, H Nagayama, Hans W. Spiess, Hao-Jan Sun, HS Jeong, I Weissbuch, J Van Gestel, J Van Gestel, J-M Lehn, JD Watson, JE Hein, JR Sanchez-Valencia, K Sato, L Pasteur, L Pauling, M Peterca, Margaret E. Prendergast, MF Pertuz, Mihai Peterca, MM Green, MM Safont-Sempere, MMJ Smulders, P Frank, P Jonkheijm, Paul A. Heiney, Pawaret Leowanawat, R Saito, RE Franklin, Robert Graf, S Arias, S Azeroual, S Iijima, SP Fletcher, SW Sisco, TW Ebbesen, V Dehm, V Percec, V Percec, V Percec, V Percec, V Percec, V Percec, Virgil Percec, W Jin, Xiangbing Zeng   +63 more
core   +1 more source

Ab-Initio Calculation of Molecular Aggregation Effects: a Coumarin-343 Case Study [PDF]

, 2013
We present time-dependent density functional theory (TDDFT) calculations for single and dimerized Coumarin-343 molecules in order to investigate the quantum mechanical effects of chromophore aggregation in extended systems designed to function as a new ...
Agranovich V., Agranovich V. M., Blankenship R. E., Cao J., Cheng Y.-C., Clark T., Collini E., Cossi M., Curutchet C., Davydov A. S., Didraga C., Didraga C., Ditchfield R., Donghyun Lee, Dreuw A., Endo M., Engel G. S., Fink R. F., Fink R. F., Frisch M. J., Gross E., Hariharan P., Hehre W. J., Howard I. A., Hsu C.-P., Ivanic J., K. Birgitta Whaley, Kasha M., Klug A., Knoester J., Kowalski K., Krishnan R., Krueger B. P., Liu W., Loren Greenman, Löwdin P.-O., Ma Y.-Z., Madjet M. E., Madjet M. E., Miller R. A., Mohan Sarovar, Muh F., Mulliken R. S., Muñoz Losa A., Nam Y. S., Novoderezhkin V. I., Pan F., Perdew J. P., Perdew J. P., Peverati R., Peverati R., Piecuch P., Runge E., Sarovar M., Sarovar M., Schmidt M. W., Scholes G. D., Scholes G. D., Scholes G. D., Scholes G. D., Scholes G. D., Scholes G. D., Scholes G. D., Shao Y., Sinnokrot M. O., Stephens P. J., Tawada Y., van Amerongen H., Witus L. S., Wloch M., Zhao H. M., Zhao Y.   +71 more
core   +2 more sources

1,6- and 1,7-Regioisomers of Asymmetric and Symmetric Perylene Bisimides: Synthesis, Characterization and Optical Properties

Molecules, 2013
The 1,6- and 1,7-regioisomers of dinitro- (1,6-A and 1,7-A) and diamino-substituted perylene bisimides (1,6-B and 1,7-B), and 1-amino-6-nitro- and 1-amino-7-nitroperylene bisimides (1,6-C and 1,7-C) were synthesized. The 1,6-A and 1,7-A regioisomers were
Hsing-Yang Tsai, Che-Wei Chang, Kew-Yu Chen   +2 more
doaj   +1 more source

Design Principles for Two-Dimensional Molecular Aggregates Using Kasha's Model: Tunable Photophysics in Near and Short-Wave Infrared [PDF]

, 2019
Technologies which utilize near-infrared (700 – 1000 nm) and short-wave infrared (1000 – 2000 nm) electromagnetic radiation have applications in deep-tissue imaging, telecommunications and satellite telemetry due to low scattering and decreased ...
Cadena, Danielle M, Cao, Jianshu, Caram, Justin R, Chuang, Chem, Deshmukh, Arundhati P, Koppel, Danielle   +5 more
core   +3 more sources

Understanding and optimising the packing density of perylene bisimide layers on CVD-grown graphene

, 2015
The non-covalent functionalisation of graphene is an attractive strategy to alter the surface chemistry of graphene without damaging its superior electrical and mechanical properties.
Backes, Claudia, Berner, Nina C., Cafolla, Attilio A., Duesberg, Georg S., Dümbgen, Kim C., Hirsch, Andreas, Kaminska, Izabela, Mackowski, Sebastian, Winters, Sinéad, Yim, Chanyoung   +9 more
core   +1 more source

Excitation characteristics of different energy transfer in nanotube-perylene complexes [PDF]

, 2013
We report the properties of perylene-nanotube complexes that form efficient energy transfer systems. Most perylene-derivatives yield similar ratios between transfer and direct luminescence (0.66 ± 0.04).
Ernst, Friederike, Haag, Rainer, Heek, Timm, Reich, Stephanie, Setaro, Antonio   +4 more
core   +1 more source