Results 31 to 40 of about 16,123 (194)

Deracemization of Carbohelicenes by a Chiral Perylene Bisimide Cyclophane Template Catalyst

Angewandte Chemie, 2021
Deracemization describes the conversion of a racemic mixture of a chiral molecule into an enantioenriched mixture or an enantiopure compound without structural modifications. Herein, we report an inherently chiral perylene bisimide (PBI) cyclophane whose
Manuel Weh, Jessica Rühe, Benedikt Herbert, Ana‐Maria Krause, F. Würthner   +4 more
semanticscholar   +1 more source

Fused‐ring induced end‐on orientation in conjugated molecular dyads toward efficient single‐component organic solar cells

Aggregate, 2023
The molecular orientations of conjugated materials on the substrate mainly include edge‐on, face‐on, and end‐on. Edge‐on and face‐on orientations have been widely observed, while end‐on orientation has been rarely reported.
Dongdong Xia, Shengxi Zhou, Wen Liang Tan, Safakath Karuthedath, Chengyi Xiao, Chaowei Zhao, Frédéric Laquai, Christopher R. McNeill, Weiwei Li   +8 more
doaj   +1 more source

Chiral Perylene Bisimide Dyes by Interlocked Arene Substituents in the Bay Area

Chemistry, 2021
A series of perylene bisimide (PBI) dyes bearing various aryl substituents in 1,6,7,12 bay positions has been synthesized by Suzuki cross‐coupling reaction.
Rebecca Renner, Bernhard Mahlmeister, Olga Anhalt, M. Stolte, F. Würthner   +4 more
semanticscholar   +1 more source

Yellow Light-Emitting Highly Soluble Perylene Bisimide Dyes by Acetalization of Bay-Hydroxy Groups.

Organic Letters, 2022
A new class of perylene bisimide (PBI) derivatives is introduced by bridging 1,12- and 1,6,7,12-hydroxy functionalized bay positions with oxygen-carbon-oxygen linker(s).
Oliver Nagler, Ana‐Maria Krause, Kazutaka Shoyama, M. Stolte, R. Dubey, Linlin Liu, Zengqi Xie, F. Würthner   +7 more
semanticscholar   +1 more source

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

Self‐assembled Helical Tetramer Stack of Terrylene Bisimide in Solution and Crystalline State

Angewandte Chemie, Volume 138, Issue 13, 23 March 2026.
A TBI with sterically demanding imide substituents self‐assembles in solution into a defined helical tetramer π‐stack. Both the monomer and the tetramer can form complexes with polycyclic aromatic guest molecules, resulting in the formation of tri‐ or hexalayer in solution and in the crystalline solid state.
Simon Soldner, Kazutaka Shoyama, Matthias Stolte, Frank Würthner   +3 more
wiley   +2 more sources

Real‐time Observation of Structural Dynamics Triggering Excimer Formation in a Perylene Bisimide Folda‐dimer by Ultrafast Time‐Domain Raman Spectroscopy

Angewandte Chemie, 2021
In π‐conjugated organic photovoltaic materials, an excimer state has been generally regarded as a trap state which hinders efficient excitation energy transport.
Yongseok Hong, Woojae Kim, Taeyeon Kim, Christina Kaufmann, Hyungjun Kim, F. Würthner, Dongho Kim   +6 more
semanticscholar   +1 more source

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

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