Despite the rapid increase in power conversion efficiency (PCE) of non-fullerene acceptor (NFA) based solar cells in recent years, organic photovoltaic (OPV) devices exhibit considerably larger voltage losses compared to...
A perylene-based acceptor (PMI-FF-PMI), consisting of two perylene monoimide (PMI) units bridged with a dihydroindeno[1,2 b]fluorene molecule was developed as a potential non-fullerene acceptor (NFA) for organic solar cells (OSCs)....
Natural dielectrics are emerging nowadays as a niche selection of materials for applications targeting biocompatibility and biodegradability for electronics and sensors within the overall effort of scientific community to achieve sustainable development and to build environmental consciousness. The two natural resins analyzed in this study, silver fir and Rocky mountain fir demonstrate robust dielectric properties and excellent film forming capabilities, while being trap free dielectrics in high‐performance organic field effect transistors (OFETs) operating at voltages as low as 1 V. Immense research possibilities are demonstrated through the avenue of inorganic nanofillers insertions in the natural resins film, that opens the door for fabrication of very low voltage OFETs with high dielectric constant insulating layers.
Electrochemical capture of carbon dioxide (CO
2
) using
organic quinones is a promising and intensively studied alternative
to the industrially established scrubbing processes. While recent
studies focused only on the influence of substituents having a simple
mesomeric or nucleophilicity effect, we have systematically selected
six anthraquinone (AQ) derivatives (X-AQ) with amino and hydroxy substituents
in order to thoroughly study the influence thereof on the properties
of electrochemical CO
2
capture. Experimental data from
cyclic voltammetry (CV) and UV–Vis spectroelectrochemistry
of solutions in acetonitrile were analyzed and compared with innovative
density functional tight binding computational results. Our experimental
and theoretical results provide a coherent explanation of the influence
of CO
2
on the CV data in terms of weak and strong binding
nomenclature of the dianions. In addition to this terminology, we
have identified the dihydroxy substituted AQ as a new class of molecules
forming rather unstable [X-AQ-(CO
2
)
n
]
2–
adducts. In contrast to the commonly
used dianion consideration, the results presented herein reveal opposite
trends in stability for the X-AQ-CO
2
•–
radical species for the first time. To the best of our knowledge,
this study presents theoretically calculated UV–Vis spectra
for the various CO
2
-AQ reduction products for the first
time, enabling a detailed decomposition of the spectroelectrochemical
data. Thus, this work provides an extension of the existing classification
with proof of the existence of X-AQ-CO
2
species, which
will be the basis of future studies focusing on improved materials
for electrochemical CO
2
capture.
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