54663-78-4Relevant articles and documents
Synthesis and characterization of donor-acceptor type conducting polymers containing benzotriazole acceptor and benzodithiophene donor or: S -indacenodithiophene donor
Zhang, Di,Wang, Min,Liu, Xiaoli,Zhao, Jinsheng
, p. 94014 - 94023 (2016)
Two novel electrochromic copolymers, poly(benzodithiophene-benzotriazole) (PBDBT) and poly(s-indacenodithiophene-benzotriazole) (PIDBT) were synthesized successfully through Stille coupling reactions. Both polymers were characterized by cyclic voltammetry
Synthesis of a benzotriazole bearing alternating copolymer for organic photovoltaic applications
Istanbulluoglu, Cagla,G?ker, Seza,Hizalan, Gonul,Hacioglu, Serife O.,Udum, Yasemin Arslan,Yildiz, Esra D.,Cirpan, Ali,Toppare, Levent
, p. 6623 - 6630 (2015)
A low band gap donor-acceptor (D-A) copolymer PTBTBDT, namely, poly(2-dodecyl-4,7-di(thiophen-2-yl)-2H-benzo[d][1,2,3]triazole-alt-4,8-bis(2-ethylhexyloxy)benzo[1,2-b:4,5-b′]dithiophene), was designed and synthesized via a Pd-catalyzed Stille polycondensation reaction. The polymer was characterized using 1H NMR spectroscopy, UV-vis absorption spectroscopy, cyclic voltammetry, and gel permeation chromatography (GPC). PTBTBDT has good solubility in common organic solvents, good thermal stability, broad absorption, low band gap and exhibits not only high hole mobility but also moderate photovoltaic properties. PTBTBDT displays broad absorption in the wavelength range from 300 nm to 630 nm, and its HOMO and LUMO energy levels were calculated to be -4.98 eV and -3.34 eV, respectively. Bulk heterojunction solar cells were fabricated using PTBTBDT as the electron donor and PC70BM as the acceptor. The device exhibits a power conversion efficiency of 2.12% with a current density of 5.45 mA cm-2, an open-circuit voltage of 0.72 V, and a fill factor of 54% under the illumination of AM 1.5 G, 100 mW cm-2. Under similar device fabrication conditions, the PTBTBDT based device showed considerably improved efficiency among its previously synthesized counterparts, i.e. PBDTDTBTz and PBDTBTz based devices, which have 1.7% and 1.4% efficiencies, respectively. The hole mobility of the PTBTBDT: PC70BM (1:2 w/w) blend reached up to 1.47 × 10-3 cm2 V-1 s-1 as calculated by the space-charge-limited current (SCLC) method. By side-chain engineering, this study demonstrates a good example of tuning the absorption range, energy level, charge transport, and photovoltaic properties of polymers.
Altering Electronic and Optical Properties of Novel Benzothiadiazole Comprising Homopolymers via π Bridges
Karaman, Cansu Zeytun,G?ker, Seza,Hacio?lu, Serife O.,Haciefendio?lu, Tu?ba,Yildirim, Erol,Toppare, Levent
, (2021/04/23)
Four novel benzo[c][1,2,5]thiadiazole comprising monomers namely 5-fluoro-6-((2-octyldodecyl)oxy)-4,7-di(thiophen-2-yl)benzo[c][1,2,5]thiadiazole (TBTT), 5-fluoro-4,7-bis(4-hexylthiophen-2-yl)-6-((2-octyldodecyl)oxy)benzo[c][1,2,5]thiadiazole (HTBTHT), 5-fluoro-4,7-di(furan-2-yl)-6-((2-octyldodecyl)oxy)benzo- [c][1,2,5]thiadiazole (FBTF), and 5-fluoro-6-((2-octyldodecyl)oxy)-4,7-bis(thieno[3,2-b]thiophen-2-yl)benzo[c][1,2,5]thiadiazole (TTBTTT) were designed, and synthesized successfully via Stille polycondensation reaction. The structural characterizations of the monomers were performed by 1H and 13C NMR spectroscopy and High Resolution Mass Spectroscopy (HRMS). The monomers were then electropolymerized in a three electrode cell system via cyclic voltammetry. The electrochemical, and spectroelectrochemical characterization of the polymers were reported in detail. Besides, theoretical calculations were performed to elucidate observed experimental properties. According to the cyclic voltammogram of the polymers, HOMO and LUMO energy levels were calculated as -5.68 eV/-3.91 eV, -5.71 eV/-3.72 eV, -5.61 eV/-4.04 eV, and -5.51 eV/-3.71 eV and the electronic band gaps were 1.77 eV, 1.99 eV, 1.57 eV, and 1.80 eV for PTBTT, PHTBTHT, PFBTF, and PTTBTTT, respectively.
Two-Dimensional Halide Perovskite Materials
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Paragraph 0134-0135, (2021/11/05)
The present disclosure relates to novel two-dimensional halide perovskite materials, and the method of making and using the two-dimensional halide perovskite materials.
Indole derivative-thiophene compound as well as preparation and application thereof
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Paragraph 0027-0030, (2020/12/30)
The invention provides an indole derivative-thiophene compound as well as preparation and application thereof; the compound takes an indole derivative as a central core and thiophene as a peripheral group, and the structure of the compound is shown as a formula (1). The indole derivative-thiophene compound has the main beneficial effects that (1), the indole derivative-thiophene compound has a reticular space structure and is subjected to electrochemical polymerization to form a film, so that the obtained film has a relatively large specific surface area and also has good electrochemical properties such as electrochromism and the like; and (2), a film prepared by electrochemically taking the compound as a monomer can be randomly switched from yellow to green, the optical contrast ratio is20-50%, the response time is 0.5-9s, and the film shows relatively good spectral electrochemical stability in any wave band and is a potential electrochromic material capable of being used for military camouflage.
