Poly(3,5-dithiophene-2-yldithieno[3,2-b;2',3'-d]thiophene-co-Ethylenedioxythiophene)/Glassy Carbon Electrode Formation and Electrochemical Impedance Spectroscopic Study

3,5-Dithiophene-2-yldithieno[3,2-b;2',3'-d]thiophene (Thy(2)DTT) and ethylenedioxythiophene (EDOT) were electro-copolymerized on glassy carbon electrode (GCE) in 0.1 M sodium perchlorate (NaClO4)/acetonitrile (ACN)/dichloromethane (CH2Cl2) (8:2) solution. Poly(Thy(2)DTT-co-EDOT)/GCE thin film was characterized by various techniques, such as Cyclic Voltammetry (CV), Fourier Transform Infrared Spectroscopy - Attenuated Transmittance Reflectance (FTIR-ATR), Scanning Electron Microscopy - Energy Dispersive X-ray analysis (SEM-EDX) and Electrochemical Impedance Spectroscopy (EIS). The effects of monomer mole fractions (mole fraction, X-Thy2DTT = n(Thy2DTT/nEDOT) + n(Thy2DTT)) (0.5, 0.66 and 0.83) during the preparation of modified electrodes were examined by EIS. Capacitive behaviors of the modified GCE were defined via Nyquist, Bode-magnitude, Bode-phase and Capacitance plots. The circuit model was used to fit the theoretical and experimental data through Kramers-Kronig Transform test. The lowest frequency capacitance (C-LF) value was obtained as C-LF = 0.89 mFcm(-2) for poly(Thy(2)DTT). However, the highest C-LF was obtained for the copolymer as C-LF = 1.11 mFcm(-2) for X-Thy2DTT = 0.66 and 0.83. Potential application of the copolymer could be energy-storage devices.Unsped Global LojistikWe thank to Serhat Tikiz (Afyon Kocatepe University, Technology and Research Center (TUAM), Afyon, Turkey) for recording the SEM-EDX analyzes. We thank Unsped Global Lojistik for financial support

3,2-b;2',3'-d]thiophene)/carbon nanotube composite for capacitor applications

A novel monomer, 2,6-di(thiophene-2-yl)-3,5bis(4-(thiophene-2-yl)phenyl)dithieno[3,2-b;2',3'-d]thiophene (Th4DTT) has been synthesized and used as an electro-active material. It has been electropolymerized onto glassy carbon (GC) electrode in sodium dodecyl sulfate (SDS) solution (0.1 M) together with multi-walled carbon nanotubes (MWCNT). A good capacitive characteristics for P(Th4DTT)/MWCNT composite has been obtained by electrochemical impedance spectroscopy (EIS), which is, to our best knowledge, the first report on capacitor behavior of a dithienothiophene. A synergistic effect has been resolved by Nyquist, Bode-magnitudephase and admittance plots. Specific capacitance of the conducting polymer/MWCNT, calculated from cyclic voltammogram (CV) together with area and charge formulas, has been found to be 20.17 F g(-1). Long-term stability of the capacitor has also been tested by CV, and the results indicated that, after 500 cycles, the specific capacitance is 87.37% of the initial capacitance. An equivalent circuit model of R-s(C-1(R-1(Q(R2W))))(C2R3) has been obtained to fit the experimental and theoretical data. The double layer capacitance (C-dl) value of P(Th4DTT)/MWCNT (4.43 mF cm(-2)) has been found to be 25 times higher than P(Th4DTT) (C-dl= 0.18 mF cm(-2)). (c) 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40061.Istanbul Technical University (Istanbul, Turkey); Unsped Global LojistikThe authors thank Serhat Tikiz (Afyon Kocatepe Univ., TUAM, Afyon, Turkey) for SEM-EDX measurements, Istanbul Technical University (Istanbul, Turkey) for a grant to Suzan Baslilar (MSc) and Unsped Global Lojistik for financial support

Fluorene–Dithienothiophene-<i>S,S</i>-dioxide Copolymers. Fine-Tuning for OLED Applications

Three groups of fluorene–dithieno­[3,2-<i>b</i>;2′,3′-<i>d</i>]­thiophene-<i>S</i>,<i>S</i>-dioxides (DTT-<i>S</i>,<i>S</i>-dioxide) copolymers, each having four different ratios of DTT-<i>S</i>,<i>S</i>-dioxide (5, 15, 25, and 50%) were successfully synthesized through Suzuki coupling method. While the first group copolymers <b>P1</b> had direct connection of fluorene to the peripheral thiophenes of DTT-<i>S</i>,<i>S</i>-dioxide, second group copolymers <b>P2</b> had a thiophene extension between fluorene and DTT-<i>S</i>,<i>S</i>-dioxide, and in the third group, copolymers <b>P3</b>, fluorene had a connection with DTT-<i>S</i>,<i>S</i>-dioxide through the phenyl moiety of DTT. Absorbance and emission measurements of first two groups <b>P1</b> and <b>P2</b> displayed a regular bathochromic shift with increasing content of DTT-<i>S</i>,<i>S</i>-dioxide, which was more clearly observed in their solid state fluorescence measurements. Introduction of thiophene to the peripherals of the DTT-<i>S</i>,<i>S</i>-dioxide in copolymers <b>P2</b> caused even further bathochromic shift in absorbances and emissions. As the absorbance and emission of <b>P1</b> went up to 447 and 558 nm in solution, respectively, <b>P2</b> had them at 472 and 592 nm, respectively. In solid state, emissions of <b>P1</b> and <b>P2</b> even went further up to 585 and 646 nm, respectively. The bathochromic trend of <b>P1</b> and <b>P2</b> became opposite with absorbance and solid state emission of <b>P3</b>, which had a hypsochromic shift with increasing content of DTT-<i>S</i>,<i>S</i>-dioxide. Solid state emission of <b>P3</b>, particularly the copolymers having 5, 15 and 50% DTT-<i>S</i>,<i>S</i>-dioxide, covered a wide region between 400 and 675 nm. A spread of colors from light blue (border of white) to red through green and yellow was obtained with the OLED applications of the copolymers. Their optical and electronic band gaps varied between 2.17 and 2.99 eV and between 2.68 and 3.57 eV, respectively. While the highest quantum yield was obtained with <b>P2</b> (5%) as 0.66, the lowest was observed with <b>P2</b> (50%) as 0.03. Almost all of the polymers displayed good thermal stabilities. No weight loss was observed with the copolymers <b>P2</b> (5–15%) and <b>P3</b> up to 400 °C

Elevated troponin levels and typical chest pain: Is always acute coronary syndrome?

Aortic dissection is a fatal disease that must be considered in the differential diagnosis of chest pain. If the diagnosis cannot be made in early period, mortality is very high. Here, we present a case of aortic dissection, clinically mimicking acute coronary syndrome

Novel 4,8-Benzobisthiazole (BBT) copolymers and their application in OFET and OPV devices (dataset)

This dataset contains the raw data for Atomic Force Microscopy (AFM) Images, Cylcic Voltamomgrams (CV), UV-Vis spectra and Organic Field-Effect Transistor (OFET) devices present in the paper. Also included are Nuclear Magentic Resonance (NMR) and Thermal Gravametric Analysis (TGA) data. AFM images were generated using WSXM 5.0 are formatted in associated formats. CV, UV, TGA and OFET data are presented in .txt or .xls files that can be opened with typical graphing software, or created using OriginPro 2015 and saved in associated formats. NMR data is in the .fid or .xwp format