Effects of linking units on fused-ring electron acceptor dimers

2020 ◽  
Vol 8 (27) ◽  
pp. 13735-13741 ◽  
Author(s):  
Guilong Cai ◽  
Yiqun Xiao ◽  
Mengyang Li ◽  
Jeromy James Rech ◽  
Jiayu Wang ◽  
...  
Keyword(s):  
Electron Acceptor ◽  
Electron Acceptors ◽  
Photovoltaic Properties ◽  
Fused Ring

Three new fused-ring electron acceptors were designed and synthesized based on indaceno[3,2-b]dithiophene dimer cores. Effects of the linking units on optical, electronic, morphologic, and photovoltaic properties were revealed.

Selenium-containing two-dimensional conjugated fused-ring electron acceptor for enhanced crystal packing, charge transport, and photovoltaic performance

2021 ◽  
Author(s):  
Jin-Liang Wang ◽  
Shi-Sheng Wan ◽  
Qiaoqiao Zhao ◽  
Zhao Jiang ◽  
Gui-Zhou Yuan ◽  
...  
Keyword(s):  
Charge Transport ◽  
Electron Acceptor ◽  
Crystal Packing ◽  
Photovoltaic Performance ◽  
Electron Acceptors ◽  
Central Core ◽  
Two Dimensional ◽  
Highly Efficient ◽  
Fused Ring

Recently, despite two-dimensional fused-ring electron acceptors (FREAs) have been attracted more and more attention, design highly efficient two-dimensional FREAs with new heterocycle-based two-dimensional central core is still quite difficult to...

Fused octacyclic electron acceptor isomers for organic solar cells

2019 ◽  
Vol 7 (37) ◽  
pp. 21432-21437 ◽  
Author(s):  
Guilong Cai ◽  
Jingshuai Zhu ◽  
Yiqun Xiao ◽  
Mengyang Li ◽  
Kuan Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Acceptor ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Electron Acceptors ◽  
Fused Ring ◽  
Conversion Efficiencies

We synthesize 2 new isomeric fused-ring electron acceptors BTIC and NTIC. BTIC and NTIC-based organic solar cells show power conversion efficiencies of 11.5–12.2%.

Effects of alkoxylation position on fused-ring electron acceptors

2020 ◽  
Vol 8 (43) ◽  
pp. 15128-15134
Author(s):  
Jingshuai Zhu ◽  
Yiqun Xiao ◽  
Changxi Zhang ◽  
Boyu Jia ◽  
Heng Lu ◽  
...  
Keyword(s):  
Molecular Packing ◽  
Electron Acceptors ◽  
Side Chains ◽  
Photovoltaic Properties ◽  
The Core ◽  
End Groups ◽  
Fused Ring

Four fused-ring electron acceptors composed of the same core and end groups without or with hexyloxyl groups on the core and/or phenyl side chains are compared to systematically study the effects of alkoxylation position on the molecular packing, optical, electronic, and photovoltaic properties of the nonfullerene acceptors.

The influence of potassium dichromate on dissimilatory reduction of sulfate and nitrate ions by bacteria Desulfovibrio sp.

2017 ◽  
Vol 28 (1-2) ◽  
pp. 84-95
Author(s):  
O. M. Moroz ◽  
S. O. Hnatush ◽  
Ch. I. Bohoslavets ◽  
T. M. Hrytsun’ ◽  
B. M. Borsukevych
Keyword(s):  
Electron Acceptor ◽  
Potassium Dichromate ◽  
Anaerobic Respiration ◽  
Sulfate Reducing Bacteria ◽  
Negative Influence ◽  
Electron Acceptors ◽  
Metal Compounds ◽  
Nitrate Ions ◽  
Sulfate Reducing ◽  
Reducing Bacteria

Sulfate reducing bacteria, capable to reductive transformation of different nature pollutants, used in biotechnologies of purification of sewage, contaminated by carbon, sulfur, nitrogen and metal compounds. H2S formed by them sediment metals to form of insoluble sulfides. Number of metals can be used by these microorganisms as electron acceptors during anaerobic respiration. Because under the influence of metal compounds observed slowing of bacteria metabolism, selection isolated from technologically modified ecotops resistant to pollutions strains is important task to create a new biotechnologies of purification. That’s why the purpose of this work was to study the influence of potassium dichromate, present in medium, on reduction of sulfate and nitrate ions by sulfate reducing bacteria Desulfovibrio desulfuricans IMV K-6, Desulfovibrio sp. Yav-6 and Desulfovibrio sp. Yav-8, isolated from Yavorivske Lake, to estimate the efficiency of possible usage of these bacteria in technologies of complex purification of environment from dangerous pollutants. Bacteria were cultivated in modified Kravtsov-Sorokin medium without SO42- and FeCl2×4H2O for 10 days. To study the influence of K2Cr2O7 on usage by bacteria SO42- or NO3- cells were seeded to media with Na2SO4×10H2O or NaNO3 and K2Cr2O7 at concentrations of 1.74 mM for total content of electron acceptors in medium 3.47 mM (concentration of SO42- in medium of standard composition). Cells were also seeded to media with 3.47 mM Na2SO4×10H2O, NaNO3 or K2Cr2O7 to investigate their growth in media with SO42-, NO3- or Cr2O72- as sole electron acceptor (control). Biomass was determined by turbidymetric method, content of sulfate, nitrate, dichromate, chromium (III) ions, hydrogen sulfide or ammonia ions in cultural liquid – by spectrophotometric method. It was found that K2Cr2O7 inhibits growth (2.2 and 1.3 times) and level of reduction by bacteria sulfate or nitrate ions (4.2 and 3.0 times, respectively) at simultaneous addition into cultivation medium of 1.74 mM SO42- or NO3- and 1.74 mM Cr2O72-, compared with growth and level of reduction of sulfate or nitrate ions in medium only with SO42- or NO3- as sole electron acceptor. Revealed that during cultivation of bacteria in presence of equimolar amount of SO42- or NO3- and Cr2O72-, last used by bacteria faster, content of Cr3+ during whole period of bacteria cultivation exceeded content H2S or NH4+. K2Cr2O7 in medium has most negative influence on dissimilatory reduction by bacteria SO42- than NO3-, since level of nitrate ions reduction by cells in medium with NO3- and Cr2O72- was a half times higher than level of sulfate ions reduction by it in medium with SO42- and Cr2O72-. The ability of bacteria Desulfovibrio sp. to priority reduction of Cr2O72- and after their exhaustion − NO3- and SO42- in the processes of anaerobic respiration can be used in technologies of complex purification of environment from toxic compounds.

scholarly journals Enhancing photovoltaic performance via aggregation dynamics control in fused‐ring electron acceptor

Aggregate ◽  
2021 ◽  
Author(s):  
Jiayu Wang ◽  
Runyu Zhu ◽  
Shijie Wang ◽  
Yawen Li ◽  
Boyu Jia ◽  
...  
Keyword(s):  
Electron Acceptor ◽  
Photovoltaic Performance ◽  
Fused Ring

Highly efficient fused ring electron acceptors based on a new undecacyclic core

2021 ◽  
Author(s):  
Chun-Ru Wang ◽  
Fuwen Zhao ◽  
Dan He ◽  
Jingming Xin ◽  
Huotian Zhang ◽  
...  
Keyword(s):  
Extinction Coefficient ◽  
Energy Levels ◽  
Electron Acceptors ◽  
Highly Efficient ◽  
Fused Ring ◽  
Nanoscale Morphology

Two FREAs, IUIC-O and IUIC-T, based on an undecacyclic core were developed. IUIC-T having higher extinction coefficient, affords aligned energy levels with PBDB-T, finer nanoscale morphology and more orderly molecular...

Asymmetric and Halogenated Fused‐Ring Electron Acceptor for Efficient Organic Solar Cells

2021 ◽  
pp. 2102189
Author(s):  
Jinlong Cai ◽  
Xue Zhang ◽  
Chuanhang Guo ◽  
Yuan Zhuang ◽  
Liang Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Acceptor ◽  
Organic Solar Cells ◽  
Fused Ring

D-(π-A)3 type low bandgap star-shaped fused-ring electron acceptor with alkoxy-substituted thiophene as π-bridge

2021 ◽  
Vol 190 ◽  
pp. 109329
Author(s):  
Tong Wang ◽  
Weijie Wang ◽  
Xiaofu Wu ◽  
Hui Tong ◽  
Lixiang Wang
Keyword(s):  
Electron Acceptor ◽  
Low Bandgap ◽  
Fused Ring

Syntheses and Photovoltaic Properties of Narrow Band Gap Donor–Acceptor Copolymers with Carboxylate-Substituted Benzodithiophene as Electron Acceptor Unit

2014 ◽  
Vol 47 (15) ◽  
pp. 4987-4993 ◽  
Author(s):  
Kosuke Shibasaki ◽  
Kenichi Tabata ◽  
Yohei Yamamoto ◽  
Takeshi Yasuda ◽  
Masashi Kijima
Keyword(s):  
Band Gap ◽  
Electron Acceptor ◽  
Narrow Band ◽  
Photovoltaic Properties ◽  
Donor Acceptor

scholarly journals Dehalogenation of the Herbicides Bromoxynil (3,5-Dibromo-4-Hydroxybenzonitrile) and Ioxynil (3,5-Diiodino-4-Hydroxybenzonitrile) by Desulfitobacterium chlororespirans

2005 ◽  
Vol 71 (7) ◽  
pp. 3741-3746 ◽  
Author(s):  
Alison M. Cupples ◽  
Robert A. Sanford ◽  
Gerald K. Sims
Keyword(s):  
Electron Acceptor ◽  
Pure Culture ◽  
Electron Acceptors ◽  
Reductive Dehalogenation ◽  
First Report ◽  
Lactate Uptake ◽  
Standard Deviations ◽  
Doubling Times

ABSTRACT Desulfitobacterium chlororespirans has been shown to grow by coupling the oxidation of lactate to the metabolic reductive dehalogenation of ortho chlorines on polysubstituted phenols. Here, we examine the ability of D. chlororespirans to debrominate and deiodinate the polysubstituted herbicides bromoxynil (3,5-dibromo-4-hydroxybenzonitrile), ioxynil (3,5-diiodo-4-hydroxybenzonitrile), and the bromoxynil metabolite 3,5-dibromo-4-hydroxybenzoate (DBHB). Stoichiometric debromination of bromoxynil to 4-cyanophenol and DBHB to 4-hydroxybenzoate occurred. Further, bromoxynil (35 to 75 μM) and DBHB (250 to 260 μM) were used as electron acceptors for growth. Doubling times for growth (means ± standard deviations for triplicate cultures) on bromoxynil (18.4 ± 5.2 h) and DBHB (11.9 ± 1.4 h), determined by rate of [14C]lactate uptake into biomass, were similar to those previously reported for this microorganism during growth on pyruvate (15.4 h). In contrast, ioxynil was not deiodinated when added alone or when added with bromoxynil; however, ioxynil dehalogenation, with stoichiometric conversion to 4-cyanophenol, was observed when the culture was amended with 3-chloro-4-hydroxybenzoate (a previously reported electron acceptor). To our knowledge, this is the first direct report of deiodination by a bacterium in the Desulfitobacterium genus and the first report of an anaerobic pure culture with the ability to transform bromoxynil or ioxynil. This research provides valuable insights into the substrate range of D. chlororespirans.

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