A5054790420- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Molecular Junctions and Nanostructures
- Crystallography and molecular interactions
- Fullerene Chemistry and Applications
- Perovskite Materials and Applications
- Advanced Memory and Neural Computing
- Luminescence and Fluorescent Materials
- Organic and Molecular Conductors Research
- Chemical Thermodynamics and Molecular Structure
- Inorganic Fluorides and Related Compounds
- Molecular Sensors and Ion Detection
- Photochromic and Fluorescence Chemistry
- Thin-Film Transistor Technologies
- Synthesis and properties of polymers
- Organic Light-Emitting Diodes Research
University of Calgary
2016-2021
Calgary Laboratory Services
2017-2020
Northwest University
2017
University of New Brunswick
2016
The geometry of organic π-conjugated small molecules can impact the morphology blended-thin films and subsequent performance in opto-electronic devices.
This study reports on the new and optimized synthesis of an N‐annulated perylene diimide dimer with functional N–H moieties. The presence two moieties renders relatively insoluble in most organic solvents. is easily functionalized electron donating hexyl chains or withdrawing tert ‐butyloxycarbonyl (tBOC) groups to yield highly soluble materials. tBOC can be thermally cleaved thin film give parent dimer. bonds are acidic interact volatile bases. Deprotonation results a color change from red...
The addition of donor or acceptor type molecular semiconductors to PBDB-T:PC<sub>60</sub>BM based organic photovoltaics leads increases in open circuit-voltages and overall power conversion efficiencies.
In this work, we report on the synthesis, characterization, and photovoltaic properties of two new N-annulated PDI derivatives connected with one (<bold>M1</bold>) or (<bold>M2</bold>) thiophene bridging units directly compare to a twisted dimer no (<bold>tPDI-Hex</bold>).
The alcohol and water-based processing of a perylene diimide (PDI) organic semiconductor into large area solvent resistant films is reported.
Two π-conjugated thienoisoindigo-based organic small molecules have been designed to be synthetically accessible through sustainable direct heteroarylation or Sonogashira C–C bond forming cross-coupling reactions utilizing a heterogeneous palladium catalyst. To access these materials, one molecule, TII-ThNaph2, contains thiophene π-bridge facilitate protocols, whereas the other, TII-AcNaph2, an acetylene required for couplings. The synthetic route both final materials was optimized...
This study reports the modification of zinc oxide cathodic interlayer with an N-annulated perylene diimide molecule functionalized a carboxylic acid, namely, (HOOC5-triazole) PDIN-hex, referred to as IL-1, for improvement inverted-type organic photovoltaics. The new "IL-1" was synthesized using "click" chemistry and incorporated into photovoltaic device structure solution processing methods. modified layer characterized optical absorption spectroscopy, contact angle measurements, Kelvin...
The synthesis, characterization, and photovoltaic performance of three <italic>N</italic>-annulated perylene diimide dimers with benzyl based side-chains is reported.
Energy level alignments at the organic donor–acceptor interface cannot be predicted from cyclic voltammetry. Onsets for joint density of states and charge generation, reveal cases energy uphill – newly observed downhill generation.
The ability to tune the dye structure synthetically has been crucial in development of materials with tailored properties for given applications. In this contribution, a series discrete molecules are reported, which constructed from perylene diimide (PDI) chromophore and three dyes, namely thienyl diketopyrrolopyrrole (DPPTh2 ), pyridyl (DPPPyr2 thienoisoindigo (TII). Through choice molecule linking PDI through conjugated acetylene bridges, light-harvesting characteristics can be engineered...
Four isomers of diiodo-xylene were synthesized and their single crystal X-ray structures determined. I⋯I interactions found to play a strong role in defining the packing patterns these simple aromatic structures.
The synthesis of N‐annulated perylene diimides (NPDIs) with grafted electron donating phenothiazine (PTZ) groups is presented. synthetic strategy takes advantage the N‐annulation at PDI bay position, which allows for facile installation pendant donors. Three new molecular materials are reported, a dyad consisting an NPDI monomer tethered to PZT unit ( 4 ), dimer one 9 and triad two PTZ units 10 ). were “clicked” together using copper catalyzed alkyne–azide cycloaddition chemistry. Analysis...
Unusual 6,7-bis-nitrated <italic>N</italic>-annulated perylene diimides are reported which have stabilized frontier molecular orbitals. The highly LUMO enables the generation of air-stable radical anions.
Abstract Organic photovoltaics have found utility as indoor light recycling devices providing an opportunity for the sustainable powering of IoT sensors and related smart electronics. In report, two organic π‐conjugated molecules consisting four perylene diimide (PDI) chromophores each are presented used non‐fullerene acceptors in photovoltaic devices. The new materials consist a dimeric N‐annulated PDI core with single PDIs grafted onto pyrrolic N‐atom positions core. Compounds 4 e i...