3 research outputs found
High-Performance Thienothiophene and Single Wall Carbon Nanotube-Based Supercapacitor as a Free-Standing and Flexible Hybrid Energy Storage Material
Long cycle life and
high energy/power density are imperative
for
energy storage systems. Similarly, flexible and free-standing electrodes
are important for supercapacitor applications. Herein, we report,
for the first time, use of thienothiophene (TT) and a single-walled
carbon nanotube (SWCNT)-based free-standing and flexible hybrid material
(TT-TPA-SWCNT) as a high-performance supercapacitor.
The synthesized TT derivative, TT-TPA, was directly attached
to SWCNT through noncovalent interactions to obtain the TT-based SWCNT
hybrid, TT-TPA-SWCNT, as a flexible film. The hybrid
film was clarified by surface analysis methods of scanning electron
microscopy and atomic force microscopy. TT-TPA-SWCNT was
used as a flexible and free-standing electrode in a two-electrode
system for supercapacitor and energy storage applications. It displayed
a high energy storage capacity of 83.2 F g–1 at
5 mV s–1 scan rate, an excellent cyclic stability
with 110% retention of its initial specific capacitance after 7000
cycles and a long power density ranged from 100 to 3000 W·kg–1, demonstrating that TT-TPA-SWCNT is
a promising hybrid nanomaterial for high-performance energy storage
applications
DataSheet2_Thieno[3,2-b]thiophene and triphenylamine-based hole transport materials for perovskite solar cells.docx
Heterocyclic compounds have played significant roles in achieving high performance as hole transport materials (HTMs) for perovskite solar cell (PSC) applications. Various studies have focused on the development of fused heterocyclic conjugated structures for hole transport materials. In this report, three novel π-extended conjugated materials (M1-M3), based on thieno[3,2-b]thiophene (TT) and 4,4′-dimethoxytriphenylamine [TPA(OMe)2], were designed and successfully synthesized via Palladium (0) catalyzed Suzuki coupling reaction. Their optical, electrochemical, and thermal properties were investigated by UV-Vis, fluorescence, cyclic voltammetry, and thermal analysis. The materials were utilized as hole transport materials in p-i-n architecture perovskite solar cells, which displayed performances of open-circuit voltage (Voc) as high as 1,050 mV, a maximum short-circuit current (Jsc) of 16,9 mA/cm2, a maximum fill factor (FF) of 29.3%, and a power conversion efficiency (PCE) of 5.20%. This work demonstrated that thieno[3,2-b]thiophene and TPA(OMe)2-based structures are promising cores for high-performance hole transport materials in perovskite solar cell architecture.</p
Photoinduced Metal-Free Atom Transfer Radical Polymerization Using Highly Conjugated Thienothiophene Derivatives
Photoinduced
metal-free atom transfer radical polymerization (ATRP) activated by
highly conjugated electron-rich thienothiophene derivatives, namely
4-[2-(4-diphenylaminophenyl)-thieno[3,2-<i>b</i>]thiophen-3-yl]benzonitrile
(TT-TPA), 4-[2,5-bis(4-diphenylaminophenyl)-thieno[3,2-<i>b</i>]thiophen-3-yl]benzonitrile (TPA-TT-TPA), 4-(2-(4-(1,2,2-triphenylvinyl)phenyl)
thieno[3,2-<i>b</i>]thiophen-3-yl)benzonitrile (TT-TPE)
and 4-(2,5-bis(4-(1,2,2-triphenylvinyl)phenyl)thieno[3,2-<i>b</i>]thiophen-3- yl)benzonitrile (TPE-TT-TPE) is reported. Polymerization
of methyl methacrylate (MMA) is efficiently activated and deactivated
with light, forming polymers with controlled the molecular weight
characteristics, dispersity, and chain end functionality. Polymerization
studies and DFT calculations revealed that TT-TPA is the most efficient
activator due to the favorable thermodynamic properties