383 research outputs found
Micellization behavior of [C-16-4-C-16], 2Br(-) gemini surfactant in binary aqueous-solvent mixtures
Improved Synthesis of a Terthiophene-Based Monomeric Ligand That Forms a Highly Active Polymer for the Carbon Dioxide Reduction
The Maturity Playground
Within the context of relational art, the ongoing series, Maturity Playground, incorporates pre-fabricated playground components used as sculptural material. The use of slides, swings, trampolines, and merry-go-rounds has been disrupted. These structures are manipulated through placement and colour to the point where they become socially tense or awkward situations for adults. Playground structures in the art gallery subvert conventional notions of art, the understanding of appropriate behavior in an art environment and the understanding of play as an aesthetic element. Such re-placement creates a disruption to the psychological associations attached to the activity of the object. In this new context, the works allow participation and promote the idea that play can be a model for co-operative behavior
Synthesis and characterization of different type of Polymers as a potential HTM for Perovskite solar cell
Highly Photoactive Polythiophenes Obtained by Electrochemical Synthesis from Bipyridine-Containing Terthiophenes
According to numerous previous reports, a Z-scheme with two photon absorbers is the most promising strategy to achieve artificial photosynthesis, but in addition to two efficient catalysts — one for oxygen evolution, the other for CO2 reduction — two different and complementary semiconducting sensitizers are required. Here we present the synthesis of two bipyridine-functionalized terthiophenes, which can be electropolymerized to give photoactive p-type semiconductors the capability to perform as photocathode in photoelectrochemical cells for water photosplitting or artificial photosynthesis. Indeed the bipyridine moiety in their structure allows the binding of transition metal carbonyl complexes employed in CO2 reduction, and their band-gap is suitable for the coupling with wide band-gap semiconductors, which have already found application as photoanodes. Finally, they are characterized by photogenerated charge carrier density between 1.1 and 1.4 × 1019 cm−3, with first-order recombination constant of 0.7–1.8 × 10−2 s−1. These figures are of the same order of magnitude of their inorganic counterparts and would therefore guarantee photoconductivity of the device and the activation of the organometallic catalysts with which they should be coupled to function as photocathodes for CO2 reduction
Greener processability of PTAA based HTMs: Introducing Phenothiazine and Benzothiadiazole scaffolds to improve sustainability of flexible Perovskite Solar Cells
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