نتایج جستجو برای: π conjugated molecules

تعداد نتایج: 248732  

2012
Brian D. Wall John D. Tovar

We describe the synthesis, characterization, and fabrication of bioelectronic materials derived from small oligopeptides containing π-conjugated subunits directly embedded into peptide backbones. The rapid incorporation of π-conjugated subunits directly into peptide backbones was accomplished through an on-resin dimerization procedure recently explored in our research. We investigated these pep...

2017
Chiara Musumeci Monika Wałęsa-Chorab Adam Gorczyński Grzegorz Markiewicz Andrzej Bogucki Roman Świetlik Zbigniew Hnatejko Wojciech Jankowski Marcin Hoffmann Emanuele Orgiu Artur R. Stefankiewicz Violetta Patroniak Artur Ciesielski Paolo Samorì

Small π-conjugated molecules can be designed and synthesized to undergo controlled self-assembly forming low-dimensional architectures, with programmed order at the supramolecular level. Such order is of paramount importance because it defines the property of the obtained material. Here, we have focused our attention to four pyromellitic diimide derivatives exposing different types of side chai...

2017
ALEKSANDRA DENISOVA Thomas Müller

Denisova, A. 2017. Hyperconjugation in Group 14 Organic Compounds. Design and Property Investigations. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1613. 61 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-513-0190-7. Nowadays π-conjugated molecules are widely used as materials for devices in organic and molecular electronics. This ...

Journal: :Chemical communications 2013
Brian G Imsick Jiba Raj Acharya Evgueni E Nesterov

A simple method for tuning the performance characteristics of fluorescent ratiometric sensors based on surface-immobilized monolayers of π-conjugated molecules enabled gradual adjustment of the sensitivity and the analyte detection range of the sensor. This approach has been applied to fine-tune the sensing performance of a prototype ratiometric chemosensor for fluoride ions.

Journal: :Organic & biomolecular chemistry 2012
Yohei Haketa Mayumi Takayama Hiromitsu Maeda

Pyrrole-based π-conjugated anion-responsive molecules provided various planar anionic structures by complexation with halide anions, resulting in the formation of solid-state assemblies with planar counter cations and exhibiting various modes of charge-by-charge assembly depending on the substituents of the anion receptors.

Journal: :Organic & biomolecular chemistry 2014
Benjamin M Schulze Davita L Watkins Jing Zhang Ion Ghiviriga Ronald K Castellano

Reported is characterization of the self-assembly of π-conjugated oligomers, molecules studied recently in photovoltaic devices, using variable temperature diffusion ordered spectroscopy (VT-DOSY). Iterative fitting of diffusion coefficient versus temperature data to a modified Stokes-Einstein equation, molecular modelling, and comparison to non-assembling model compounds, has allowed estimatio...

Journal: :Korean Journal of Materials Research 2023

Solar cells based on p-conjugated donor-acceptor (D-A) organic molecular systems are a promising alternative to conventional electrical energy generation. D-A systems, which have triphenylamine (TPA) moiety linked with benzothiadiazole (BTD) moiety, open the potential development of new small molecule donors for bulk heterojunction (BHJ) solar cells. Here, series donor-acceptor-π-acceptor (D-A-...

2012
Ingo Salzmann Armin Moser Martin Oehzelt Tobias Breuer Xinliang Feng Zhen-Yu Juang Dmitrii Nabok Raffaele G. Della Valle Steffen Duhm Georg Heimel Aldo Brillante Elisabetta Venuti Ivano Bilotti Christos Christodoulou Johannes Frisch Peter Puschnig Claudia Draxl Gregor Witte Klaus Müllen Norbert Koch

Chemical-vapor-deposited large-area graphene is employed as the coating of transparent substrates for the growth of the prototypical organic n-type semiconductor perfluoropentacene (PFP). The graphene coating is found to cause face-on growth of PFP in a yet unknown substrate-mediated polymorph, which is solved by combining grazing-incidence X-ray diffraction with theoretical structure modeling....

Journal: :Materials advances 2023

A graphene/nitrogen-enriched sandwiched composite (HAT-CN/Gr) as readily obtained from in-situ combination of HAT-CN and GO through sonication thermal reduction. The resultant HAT-CN/Gr cathode exhibits excellent lithium storage performance.

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