Solvent effects on electrosynthesis, morphological and electrochromic properties of a nitrogen analog of PEDOT

2016 ◽  
Vol 18 (7) ◽  
pp. 5129-5138 ◽  
Author(s):  
Shouli Ming ◽  
Zilan Feng ◽  
Daize Mo ◽  
Zhipeng Wang ◽  
Kaiwen Lin ◽  
...  
Keyword(s):  
Propylene Carbonate ◽  
Solvent Effects ◽  
Deionized Water ◽  
Electrochromic Properties

A new nitrogen analog of 3,4-ethylenedioxythiophene (EDOT), N-methyl-3,4-dihydrothieno[3,4-b][1,4]oxazine (MDTO), was electropolymerized in different solvents (deionized water, acetonitrile, and propylene carbonate) using LiClO4 as the electrolyte.

Solvent effects on complex formation: Cobalt(II)thiourea in ethyl acetate, propanol, propylene carbonate

1983 ◽  
Vol 75 ◽  
pp. 237-240 ◽  
Author(s):  
Ugo Biader Ceipidor ◽  
Vicenzo Carunchio ◽  
Anna Maria Girelli ◽  
Antonella Messina
Keyword(s):  
Complex Formation ◽  
Ethyl Acetate ◽  
Propylene Carbonate ◽  
Solvent Effects

scholarly journals Solvent Effects on the Electrochemical Behavior of TAPD-Based Redox-Responsive Probes for Cadmium(II)

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Rihab Sahli ◽  
Janet Bahri ◽  
Issa Tapsoba ◽  
Khaled Boujlel ◽  
Noureddine Raouafi
Keyword(s):  
Propylene Carbonate ◽  
Solvent Effects ◽  
Electrochemical Behavior ◽  
Coupling Efficiency ◽  
Triflic Acid ◽  
Anodic Potential ◽  
Redox Responsive ◽  
Reaction Coupling ◽  
Potential Peak ◽  
Redox Features

Two tetralkylated phenylenediamines (TAPD)1and2have been prepared by reductive alkylation ofpara-dimethylaminoaniline with furfural or thiophene 2-carboxaldehyde, respectively. Their chelation ability has been evaluated as electrochemical guest-responsive chemosensors for Cd(II) in acetonitrile (ACN), dimethylformamide (DMF), propylene carbonate (PC), and nitromethane (NM). The voltamperometric studies showed that these compounds are able to bind the Cd(II) cation with strong affinities except in DMF. The redox features of the chemosensors changed drastically when they are bounded to Cd(II) to undergo important anodic potential peak shifts comprised between ca. 500 and ca. 900 mV depending on the solvent. The addition of ∼4–10% molar triflic acid (TfOH) was found to be necessary to achieve rapidly the cation chelation which is slow without the acid. The electrochemical investigations suggested the formation of 1 : 2 stoichiometry complexes [Cd(L)2]2+. The results are discussed in terms of solvent effects as a competitive electron donating ligand to the cation. The reaction coupling efficiency (RCE) values were determined and were also found to be solvent-dependent.

Solvent effects on the synthesis, characterization and electrochromic properties of acetic acid modified polyterthiophene

2016 ◽  
Vol 220 ◽  
pp. 122-129 ◽  
Author(s):  
Youshan Zhang ◽  
Baoyang Lu ◽  
Liqi Dong ◽  
Hui Sun ◽  
Dufen Hu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Solvent Effects ◽  
Electrochromic Properties

Resolution of Channels in the Exine by Translocation of Colloidal Iron

1971 ◽  
Vol 29 ◽  
pp. 352-353
Author(s):  
John R. Rowley
Keyword(s):  
Phosphate Buffer ◽  
Pollen Development ◽  
Osmium Tetroxide ◽  
Pollen Grains ◽  
Deionized Water ◽  
Colloidal Iron ◽  
Fixed Material ◽  
Epilobium Angustifolium ◽  
Untreated Material ◽  
Microspore Mitosis

The morphology of the exine of many pollen grains, at the time of flowering, is such that one can suppose that transport of substances through the exine occurred during pollen development. Holes or channels, microscopic to submicroscopic, are described for a large number of grains. An inner part of the exine of Epilobium angustifolium L. and E. montanum L., which may be referred to as the endexine, has irregularly shaped channels early in pollen development although by microspore mitosis there is no indication of such channeling in chemically fixed material. The nucleus in microspores used in the experiment reported here was in prophase of microspore mitosis and the endexine, while lamellated in untreated grains, did not contain irregularly shaped channels. Untreated material from the same part of the inflorescence as iron treated stamens was examined following fixation with 0.1M glutaraldehyde in cacodylate-HCl buffer at pH 6.9 (315 milliosmoles) for 24 hrs, 4% formaldehyde in phosphate buffer at pH 7.2 (1,300 milliosmoles) for 12 hrs, 1% glutaraldehyde mixed with 0.1% osmium tetroxide for 20 min, osmium tetroxide in deionized water for 2 hrs and 1% glutaraldehyde mixed with 4% formaldehyde in 0.1M cacodylate-HCl buffer at pH 6.9 for two hrs.

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