Results 31 to 40 of about 6,223 (217)

The Relation between Packing Effects and Solid State Fluorescence of Dyes [PDF]

, 1991
The solid state fluorescence of diketopyrrolopyrrole dyes and perylene-3,4:9,10- tetracarboxylic bisimides with alkyl substituents are investigated and compared with noncovalent interactions.
Aubert, Barrow, Demmig, Ebeid, Gold, Graser, Graser, Grossi, Haedicke, Haedicke, Krasovitskii, Langhals, Langhals, Langhals, Langhals, Langhals, Langhals, L�hmannsr�ben, Nagao, Nagao, Potrawa, Rademacher, Sachweh, Sadrai, Schwendener, Sicher   +25 more
core   +1 more source

Alternative Functionalization of Hydrogen‐Bonded Diketopyrrolopyrrole Derivatives**

European Journal of Organic Chemistry, 2023
AbstractDiketopyrrolopyrrole (DPP) derivatives with thiophene capping rings are widely used as semiconductors in organic electronics. Their optoelectronic properties can be adjusted by adding different electroactive groups or by extending the conjugation of the central core, as well as by regulating their self‐assembly through noncovalent interactions.
Martinez, Gabriel, Ávila-Rovelo, Nelson Ricardo, Carmona-Vargas, Christian, Id- Boubrik, Imrane, Ruiz-Carretero, Amparo   +4 more
openaire   +2 more sources

Synthesis of Novel 3,6-Dithienyl Diketopyrrolopyrrole Dyes by Direct C-H Arylation

Molecules, 2020
Direct C-H arylation coupling is potentially a more economical and sustainable process than conventional cross-coupling. However, this method has found limited application in the synthesis of organic dyes for dye-sensitized solar cells. Although direct C-
Amsalu Efrem Yemene, Vishwesh Venkatraman, David Moe Almenningen, Bård Helge Hoff, Odd Reidar Gautun   +4 more
doaj   +1 more source

Enhancement in Charge Carrier Mobility by Using Furan as Spacer in Thieno[3,2-b]Pyrrole and Alkylated-Diketopyrrolopyrrole Based Conjugated Copolymers

Applied Sciences, 2022
The structural alteration of semiconducting polymer backbones can improve the optoelectronic properties of organic semiconductors and enhance field-effect mobilities.
Prabhath L. Gamage, Chinthaka M. Udamulle Gedara, Ruwan Gunawardhana, Chandima Bulumulla, Ziyuan Ma, Ashutosh Shrivastava, Michael C. Biewer, Mihaela C. Stefan   +7 more
doaj   +1 more source

Fluorimetric Detection of Vapor Pollutants with Diketopyrrolopyrrole Polymer Microcavities [PDF]

ACS Omega
Laura Magnasco, Andrea Lanfranchi, Martina Martusciello, Heba Megahd, Giovanni Manfredi, Paola Lova, Beata Koszarna, Daniel T. Gryko, Davide Comoretto   +8 more
doaj   +2 more sources

Preparation and Physical Characterization of Pyrene and Pyrrolo[3,4‐c]pyrrole‐1,4‐dione‐Based Copolymers

ChemistryOpen, 2019
Two narrow band‐gap copolymers consisting of 2,7‐bis(5‐(trimethylstannyl)thiophen‐2‐yl)‐4,5,9,10‐tetrakis(2‐ethylhexyloxy)‐pyrene (M1) as an electron‐rich unit and diketopyrrolopyrrole (DPP) as an electron‐deficient unit have been synthesized and ...
Dr. Bakhet A. Alqurashy
doaj   +1 more source

Fluoro-Modulated Molecular Geometry in Diketopyrrolopyrrole-Based Low-Bandgap Copolymers for Tuning the Photovoltaic Performance

Frontiers in Chemistry, 2019
Fluorination of conjugated polymers is an effective strategy to tune the energy levels for obtaining high power conversion efficiency (PCE) in organic solar cells.
Cai'e Zhang, Yahui Liu, Jia Tu, Shouli Ming, Xinjun Xu, Zhishan Bo   +5 more
doaj   +1 more source

Torsional angle dependence and switching of inner sphere reorganisation energies for electron and hole charge transfer processes involving phenyl substituted diketopyrrolopyrroles; a density functional study [PDF]

, 2015
This document is the Accepted Manuscript version of the following article: Jesus Calvo-Castro, Callum J. McHugh, Andrew J. McLean, ‘Torsional angle dependence and switching of inner sphere reorganisation energies for electron and hole transfer processes ...
Andrew J. McLean, Becke, Becke, Bredas, Bromley, Bronstein, Callum J. McHugh, Chen, Christie, Coropceanu, Coropceanu, Coropceanu, Cortizo-Lacalle, DAdS, Gruhn, Ha, Hao, Herbst, Holcombe, Hong, Jensen, Jesus Calvo-Castro, Kanimozhi, Kanimozhi, Kuo, Leach, Lee, Lee, Li, Lin, Loser, Malagoli, Malagoli, Marcus, Marcus, Matyushov, McMahon, Qu, Qu, Qu, Reimers, Sakanoue, Shao, Smith, Sonar, Szabo, Tamayo, Tamayo, Vath, Wallquist, Wang, Yum, Zade, Zhao, Zhao, Zhao, Zhao   +56 more
core   +2 more sources

Solid-state structure and optical properties of highly fluorescent diketopyrrolopyrrole derivatives synthesized by cross-coupling reaction [PDF]

, 2010
Diketopyrrolopyrrole (DPP) derivatives with four different substituents were synthesized by cross-coupling reactions. The DPP derivatives were investigated in terms of their solid-state structure, absorption, emission, and electrochemistry.
Kuwabara Junpei, Yamagata Takuya, 桑原 純平, 神原 貴樹, 神原 貴樹   +4 more
core   +1 more source

Bi-diketopyrrolopyrrole (Bi-DPP) as a novel electron accepting compound in low band gap π-conjugated donor–acceptor copolymers/oligomers

Designed Monomers and Polymers, 2017
The synthesis and characterization of a novel 2,5-diketopyrrolo[3,4-c]pyrrole(DPP)-based accepting building block with the scheme DPP-neutral small linker-DPP (Bi-DPP) is presented, which was utilized as electron accepting moiety for low band gap π ...
Johannes Ahner, Jürgen Nowotny, Ulrich S. Schubert, Martin D. Hager   +3 more
doaj   +1 more source