Results 151 to 160 of about 11,491 (189)

Energy Migration in Dendritic Oligothiophene-Perylene Bisimides

The Journal of Physical Chemistry B, 2012
A series of novel oligothiophene-perylene bisimide hybrid (DOTPBI) dendrimers up to the second generation (G0, G1, and G2) were investigated. Optical measurements such as nonlinear optical and time-resolved spectroscopy, including two-photon absorption, fluorescence upconversion, and excited state transient absorption were carried out. Results of these
Jin, Zhang, Markus K R, Fischer, Peter, Bäuerle, Theodore, Goodson   +3 more
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Luminescent one-dimensional nanostructures of perylene bisimides

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2013
Perylene bisimides form a unique class of organic semiconductors, in this investigation two symmetrical perylene bisimides caped with 1-butyl (B-PTCDI) and 4,4-diethoxybutyl (DB-PTCDI) have been synthesized and characterized. The compounds self-assembled as a network of nanobelts and nanorods in the solution based self-assembly process. Morphologies of
G, Boobalan, P K M, Imran, S, Nagarajan
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Localization/Delocalization of Charges in Bay‐Linked Perylene Bisimides

Chemistry – A European Journal, 2012
AbstractThe copper‐mediated Ullmann coupling of 1,7‐dibromoperylene bisimides afforded structurally perfect singly‐linked perylene bisimide (PBI) arrays, whilst the homo‐coupling of 1,12‐dibromoperylene bisimides gave doubly‐linked and triply‐linked diperylene bisimides.
W. Jiang, C. Xiao, L. Hao, Z. Wang, H. Ceymann, C. Lambert, DI MOTTA, SIMONE, NEGRI, FABRIZIA   +7 more
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A Perylene Bisimide Organogelator for Chlorinated Solvents

Asian Journal of Organic Chemistry, 2014
AbstractDye‐incorporated gel‐like materials are an attractive functional soft matter for optoelectronic applications. Chlorinated solvents are commonly used for the development of organic devices. Herein, we report that a perylene‐bisimide‐functionalized flexible bisurea can work as an efficient organogelator for several chlorinated solvents.
Xu Lin, Misaki Hirono, Hiroki Kurata, Tomohiro Seki, Yukihiro Maruya, Ken‐ichi Nakayama, Shiki Yagai   +6 more
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Fabrication of luminescent perylene bisimide nanorods

Journal of Luminescence, 2014
Abstract Perylene bisimides have attracted great interest as a result of their unique electrical and photophysical properties. In the present investigation a N,N′-bis(2-naphthalene-2-yl)perylene-3,4,9,10-tetracarboxylic diimide was synthesized from 2-aminonaphthalene and perylene-3,4,9,10-tetracarboxylic dianhydride.
Gopal Boobalan, Predhanekar Mohamed Imran, S.G. Ramkumar, Samuthira Nagarajan   +3 more
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Bay Region Borylation of Perylene Bisimides

European Journal of Organic Chemistry, 2011
AbstractNovel bispinacolborane‐N,N′‐bis(octyl)‐3,4,9,10‐perylenetetracarboxylic acid bisimide (PBI) was synthesized in high yield. The title compound is a key intermediate in the preparation of PBI aryl derivatives through Suzuki cross‐coupling by using a large variety of easily accessible aryl halides.
Efimov Alexander, Lemmetyinen Helge, Dey Somnath   +2 more
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Heterocyclic Annelated Di(perylene bisimide): Constructing Bowl-Shaped Perylene Bisimides by the Combination of Steric Congestion and Ring Strain

The Journal of Organic Chemistry, 2009
In this paper, we present the synthesis of S- and N-heterocyclic annelated di(perylene bisimide) with extraordinary doubly bowl-shaped structures. The structures of fused PBI bowls confirmed by single-crystal X-ray structure analysis and temperature-dependent (1)H NMR are realized by the introduction of the steric congestion in nonbay regions and by ...
H. Qian, W. Yue, Y. Zhen, DI MOTTA, SIMONE, E. Di Donato, NEGRI, FABRIZIA, J. Qu, W. Xu, D. Zhu, Z. Wang   +9 more
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Ambient Stable Zwitterionic Perylene Bisimide‐Centered Radical

Angewandte Chemie, 2014
AbstractThe unexpected introduction of a cationic imidazolium substituent in the 2‐position of a tetrachloro‐substituted perylene‐3,4:9,10‐tetracarboxylic acid bisimide (PBI) by the reaction of PBI‐Cl41with the N‐heterocyclic carbene 1,3‐di‐iso‐propyl‐imidazolin‐2‐ylidene (iPr2Im2) enables the isolation of an ambient stable zwitterionic radical.
David, Schmidt, David, Bialas, Frank, Würthner   +2 more
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Perylene Bisimide Atropisomers:  Synthesis, Resolution, and Stereochemical Assignment

The Journal of Organic Chemistry, 2007
The macrocyclization of the tetra-hydroxyphenoxy-substituted perylene bisimide 4 bearing two (R)-configured 2-octyl substituents in the imide positions by etherification with diethylene glycol ditosylate afforded both the diagonally bridged (1,7- and 6,12-linkage) and laterally bridged (1,12- and 6,7-linkage) regioisomers 6 and 7.
Peter, Osswald, Matthias, Reichert, Gerhard, Bringmann, Frank, Würthner   +3 more
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Halochromic and hydrochromic squaric acid functionalized perylene bisimide

Chemical Communications, 2015
A squaric acid functionalized perylene bisimide senses solvent polarity, pH and humidity through the intramolecular charge transfer initiated by protonation/deprotonation.
Takeshi, Maeda, Frank, Würthner
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