A series of phenothiazine based dyes (OMS1-3), comprising different conjugation lengths and numbers of electron deficient (cyanovinyl) moieties with cyanoacrylic acid as an anchor, have been synthesized. The dyes display broad UV-visible absorption, from 389 nm to 484 nm. The higher molar extinction coefficient and longer absorption peak are achieved as the conjugation length and numbers of electron deficient units increase. The cell performance based on these dyes exhibits efficiencies ranging from 0.68-4.00%, compared to a standard N719-based device (PCE = 7.49%) fabricated under similar conditions. Although the OMS3 dye has two electron deficient units between phenothiazine units, an insignificant electron trapping effect is observed. From the results, the OMS3 based cell exhibits the highest short circuit current ( ) at 8.72 mA cm and the highest open-circuit voltage ( ) at 0.66 V, together with the best cell performance at 4.00%.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9078743 | PMC |
| http://dx.doi.org/10.1039/c7ra13751f | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The chloroplast RNA-binding protein CP29A supports expression during cold acclimation.
Proc Natl Acad Sci U S A
February 2025
Molecular Genetics, Institute of Biology, Faculty of Life Sciences, Humboldt Universität zu Berlin, Berlin 10115, Germany.
The chloroplast genome encodes key components of the photosynthetic light reaction machinery as well as the large subunit of the enzyme central for carbon fixation, Ribulose-1,5-bisphosphat-carboxylase/-oxygenase (RuBisCo). Its expression is predominantly regulated posttranscriptionally, with nuclear-encoded RNA-binding proteins (RBPs) playing a key role. Mutants of chloroplast gene expression factors often exhibit impaired chloroplast biogenesis, especially in cold conditions.
View Article and Find Full Text PDFSystematic Study of Hard-Wall Confinement-Induced Effects on Atomic Electronic Structure.
J Phys Chem A
January 2025
Department of Chemistry, Faculty of Science, University of Helsinki, P.O. Box 55, A.I. Virtanens Plats 1, University of Helsinki FI-00014, Finland.
We point out that although a litany of studies have been published on atoms in hard-wall confinement, they have either not been systematic, having only looked at select atoms and/or select electron configurations, or they have not used robust numerical methods. To remedy the situation, we perform in this work a methodical study of atoms in hard-wall confinement with the HelFEM program, which employs the finite element method that trivially implements the hard-wall potential, guarantees variational results, and allows for easily finding the numerically exact solution. Our fully numerical calculations are based on nonrelativistic density functional theory and spherically averaged densities.
View Article and Find Full Text PDFThe Electrochemical Iodination of Electron-Deficient Arenes.
Angew Chem Int Ed Engl
January 2025
Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26129, Oldenburg, Germany.
The iodination of electron-deficient arenes and heteroarenes is a long-standing problem in organic synthesis. Herein we describe the electrochemical iodination in nitromethane with BuNI as iodine source and supporting electrolyte under Lewis acid-free conditions in the presence of small amounts of chloride anions. The electrochemically generated reagent could be applied for the iodination of halogenated arenes, aromatic aldehydes, acids, esters, ketones, as well as nitroarenes to afford the products in good to excellent yields.
View Article and Find Full Text PDFSilyl Triflate-Promoted Sulfonylations.
Org Lett
January 2025
Pfizer Oncology Medicinal Chemistry, San Diego, California 92121, United States.
Sulfonamides are prevalent functional groups represented in both natural and pharmaceutical products. The synthesis of sulfonamides is often straightforward when using nucleophilic amines and electrophilic sulfonyl chlorides. When reactivity challenges arise for nontraditional substrates, harsh conditions or new synthetic routes may be required.
View Article and Find Full Text PDFDevelopmental and environmental effects on VTC2-dependent leaf ascorbate accumulation and functions.
J Exp Bot
January 2025
Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany.
In nature, environmental conditions strongly fluctuate, frequently subjecting plants to periods of immediate photo-oxidative stress. The small molecule ascorbate allows plants to cope with such stress conditions. Ascorbate scavenges reactive oxygen species and enables the rapid and full induction of photoprotective non-photochemical quenching (NPQ).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!