نتایج جستجو برای: perylene

تعداد نتایج: 1329  

Journal: :Chemical communications 2012
Amanda L Smeigh Loïc Le Pleux Jérôme Fortage Yann Pellegrin Errol Blart Fabrice Odobel Leif Hammarström

Ultrafast recombination observed from several perylene imide sensitizers bound to NiO appears to align with Marcus normal region behaviour; this indicates recombination to intra-bandgap states.

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Brett M Savoie Kevin L Kohlstedt Nicholas E Jackson Lin X Chen Monica Olvera de la Cruz George C Schatz Tobin J Marks Mark A Ratner

High-performance solution-processed organic semiconductors maintain macroscopic functionality even in the presence of microscopic disorder. Here we show that the functional robustness of certain organic materials arises from the ability of molecules to create connected mesoscopic electrical networks, even in the absence of periodic order. The hierarchical network structures of two families of i...

Journal: :Chemical communications 2008
Hao Wang Theo E Kaiser Shinobu Uemura Frank Würthner

NIR absorbing J-aggregates with biomimetic features of chlorophyll dye assemblies are obtained upon hydrogen-bond directed self-assembly of a green 1,7-diamino-substituted perylene bisimide dye.

Journal: :Chemical communications 2016
Wei Fan Ningning Liang Dong Meng Jiajing Feng Yan Li Jianhui Hou Zhaohui Wang

A high performance three-dimensional (3D) thiophene-annulated perylene dye, namely tetra-PBI-S, was designed and synthesized. The appropriate LUMO level, balanced carrier mobilities and favourable phase separation make tetra-PBI-S based solar cells show a much higher power conversion efficiency (PCE) of 6.2% than tetra-PBI based solar cells with a PCE of 3.6%.

Journal: :Dalton transactions 2014
A G Moiseev E A Margulies J A Schneider F Bélanger-Gariépy D F Perepichka

Platinum tetrakis(2,4,6-triethylphenyl)porphyrin (Pt-1) was synthesized and its structural (X-ray), electrochemical and photophysical properties were fully characterized. Comparative studies of Pt-1 and its unsubstituted analog PtTPP show the effect of sterically congesting ortho-substituents on the dynamics of the triplet excited states. Lowered quenching rates by 3-4 times were observed for P...

Journal: :Chemical communications 2005
Sibylle Müller Klaus Müllen

The straightforward synthesis of two new classes of core-extended perylene chromophores, dibenzocoronene tetracarboxdiimide and indenoperylene dicarboxmonoimide, proves that directional enlargement of the aromatic pi-system leads to tailored bathochromic and hypsochromic shifts.

Journal: :IJISTA 2007
Kazuyuki Sato Kazuyuki Hino Hiroo Takahashi Jin Mizuguchi

Perylene-imide derivatives are industrially important pigments that exhibit a variety of shades from red via maroon to black. In the present investigation, we have synthesized novel perylene-imide derivatives with pyridyl rings in an attempt to apply them for H2 gas sensors based upon proton acceptors. The two N atoms of the pyridyl rings which work as proton acceptors are found to remain unbon...

2015
Luigino Troisi Cinzia Citti Catia Granito Serena Perrone Antonella Ciccarese Simona Bettini Gabriele Giancane Alessandro Troisi

New perylene monoimides, diimides and bis-diimides have been designed and synthetized. A detailed investigation of the synthesis of these compounds has also been performed in order to highlight the crucial factors for obtaining a specific class of molecules. Specifically, the attention has been focused on the synthesis of the intermediate perylene monoimides which are very useful precursors for...

Journal: :E-journal of Surface Science and Nanotechnology 2023

Photoemission spectroscopy of the perylene layers on Au(110) surface was performed using a momentum microscope. The two-dimensional maps monolayer exhibit “binary star” pattern with two asymmetric bright spots for electrons from highest occupied molecular orbital perylene, reflecting tilted orientation. This absent multilayer and Br-doped because random orientation molecules in these layers. Br...

Journal: :Chemical science 2016
Emily R Draper Jonathan R Lee Matthew Wallace Frank Jäckel Alexander J Cowan Dave J Adams

We show that a perylene bisimide (PBI)-based gelator forms self-sorted mixtures with a stilbene-based gelator. To form the self-sorted gels, we use a slow pH change induced by the hydrolysis of glucono-δ-lactone (GdL) to gluconic acid. We prove that self-sorting occurs using NMR spectroscopy, UV-Vis spectroscopy, rheology, and viscometry. The corresponding xerogels are photoconductive. Importan...

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