Category: 303734-52-3

Lin, Po-Shen published the artcileControlled Synthesis of Poly[(3-alkylthio)thiophene]s and Their Application to Organic Field-Effect Transistors, Related Products of bromides-buliding-blocks, the publication is ACS Applied Materials & Interfaces (2021), 13(27), 31898-31909, database is CAplus and MEDLINE.

Regioregular polythiophenes have been widely used in organic electronic applications due to their solution processability with chem. modification through side chain engineering, as well as their microstructural organization and good hole transport properties. Here, we introduce alkylthio side chains, (poly[(3-alkylthio)thiophene]s; P3ATTs), with strong noncovalent sulfur mol. interactions, to main chain thienyl backbones. These P3ATTs were compared with alkyl-substituted polythiophene (poly(3-alkylthiophene); P3AT) variants such that the effects of straight (hexyl and decyl) and branched (2-ethylhexyl) side chains (with and without S atoms) on their thin-film morphologies and crystalline states could be investigated. P3ATTs with linear alkylthio side chains (P3HTT, hexylthio; P3DTT, decylthio) did not attain the expected higher organic field-effect transistor (OFET) mobilities with respect to P3HT (hexyl) and P3DT (decyl) mainly due to their lower regioregularity (76-78%), although P3ATTs exhibit an enhanced tendency for aggregation and compact mol. packing, as indicated by the red-shifting of the absorption spectra and the shortening of the π-π stacking distance, resp. Moreover, the loss of regioregularity issue can be solved by introducing more soluble 2-ethylhexylthio branched side chains to form poly[3-(2-ethylhexylthio)thiophene] (P3EHTT), which provides enhanced crystallinity and efficient charge mobility (increased by up to a factor of 3) with respect to the poly(2-ethylhexylthiophene) (P3EHT) without S atoms in the side moieties. This study demonstrates that the presence of side chain alkylthio structural motifs with nonbonded interactions in polythiophene semiconductors has a beneficial impact on the mol. conformation, morphologies, structural packing, and charge transport in OFET devices.

ACS Applied Materials & Interfaces published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C12H19BrS, Related Products of bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Nakanishi, Tatsuaki published the artcileSynthesis and optical properties of photovoltaic materials based on the ambipolar dithienonaphthothiadiazole unit, Related Products of bromides-buliding-blocks, the publication is Journal of Materials Chemistry A: Materials for Energy and Sustainability (2015), 3(8), 4229-4238, database is CAplus.

Dithieno[3’2′:5,6;2”,3”:7,8]naphtho[2,3-c][1,2,5]thiadiazole (DTNT) was designed to control the band energies of the polymers for photovoltaic materials. Electrochem. anal. showed that DTNT acts as both an electron donor and an electron acceptor, revealing the ambipolar nature of the DTNT unit. The direct arylation polymerization of DTNT with 2,2′-bithiophene (BTh) and 3,6-bis(2-thienyl)pyrrolo[3,4-c]pyrrole-1,4-dione (DPP) afforded 4 polymers that differed in either the unit of copolymerization or the chosen side chains. In the PDTNT-BTh series, a shoulder absorption band was observed at a longer wavelength than the intense absorption band. The PDTNT-DPP series exhibited a narrow band gap of <1.4 eV and a low HOMO energy of -5.43 eV. An organic photovoltaic cell that contained a PDTNT-BTh polymer with 2-ethylhexyl groups and [6,6]-phenyl-C₇₁-butyric acid Me ester (PC₇₁BM) as an active layer afforded the best performance among the studied compounds, with a J_SC of 6.98 mA cm^-3, a V_OC of 0.758 V, a FF of 0.52, and a PCE of 2.76%.

Journal of Materials Chemistry A: Materials for Energy and Sustainability published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C12H19BrS, Related Products of bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Chen, Lin X. published the artcileNovel Nanoscale Organic Materials for Optimal Photovoltaic Functions, Application of 2-Bromo-3-(2-ethylhexyl)thiophene, the publication is Materials Research Society Symposium Proceedings (2007), No pp. given, Paper #: 0974-CC06-11, database is CAplus.

Covalently linked electron donor (D) and electron acceptor (A) with conjugated organic building blocks are novel materials for potential solar cell applications, because these mol. p-n junctions can minimize the exciton diffusion and transform the charge separation from interdomain to intramol. processes. Hence, the bottleneck of the exciton diffusion in many bulk heterojunction materials can be eliminated. Meanwhile, these planar conjugated assemblies, such as supermols., multiblock oligomers and polymers, have strong tendency to p-p stacking to form continuous channels for charge carriers to hop/diffuse to resp. electrodes. A quartet D-A assembly has been synthesized with bis-oligothiophene (BOTH) and bis-perylenediimide (BPDI) derivatives attached to a benzo template. The electronic structures and dynamics of photoinduced charge separation and recombination of this quartet mol. and reference compounds in solutions and films were studied at isolated the mol. level in solutions as well as at the mol. assembly level in films with stacked structures. Two different dynamics of charge separation and recombination associated with two types of donor/acceptor pair conformations in solution were observed This mol. system exhibits a more efficient charge separation than charge recombination processes in both polar and non-polar organic solvents, as well as films. More efficient charge separation and slower charge recombination due to the covalent linkage indicating that the material is a potential candidate for photovoltaic studies in solid-state.

Materials Research Society Symposium Proceedings published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C12H19BrS, Application of 2-Bromo-3-(2-ethylhexyl)thiophene.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Luo, Qi published the artcileSynthesis of Metal-Containing Poly(thiophene methines) via Solid- and Melt-State Polymerization and Their Related Applications as Highly Sensitive Ni²⁺ Chemosensors, Name: 2-Bromo-3-(2-ethylhexyl)thiophene, the publication is Organometallics (2019), 38(3), 647-653, database is CAplus.

Metal-containing polymers have attracted continuous interest, for they combine the features of a metal complex and a polymer. Here, a series of thiophene methine based phenanthroline ligands (L1–L4) and their metal (Zn(II) and Cd(II)) complexes were prepared as monomers. Accordingly, metal-containing poly(thiophene methines) were prepared from these metal complexes via solid- and melt-state polymerization (S(M)SP). The polymerization process was preliminarily investigated by a crystal structure study, NMR anal., and absorbance spectra. Furthermore, the metal-free polymer (PL4) prepared directly from the ligand via MSP was tested as a metal ion chemosensor, which showed good selectivity and excellent sensitivity toward Ni²⁺ with a detection limit of 4.1 × 10^-9 M.

Organometallics published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C12H19BrS, Name: 2-Bromo-3-(2-ethylhexyl)thiophene.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Joly, D. published the artcileMetal-free organic sensitizers with narrow absorption in the visible for solar cells exceeding 10% efficiency, Formula: C12H19BrS, the publication is Energy & Environmental Science (2015), 8(7), 2010-2018, database is CAplus.

A novel family of six donor-acceptor type organic sensitizers for dye-sensitized solar cells (DSSCs) is reported. The dyes have been designed to have outstanding light absorption properties in the visible range and being able to achieve high photon-to-elec. current conversion for BIPV (building-integrated photovoltaic). Moreover, stability tests under illumination at 1 Sun and 65 °C showed a great stability for some of the devices, with less than 6% decrease of power conversion efficiency after 3000 h. The differences in the performance of the six sensitizers under standard illumination conditions can be correlated with the observed differences in the photo-induced transient photovoltage and in charge extraction measurements. We report the use of one of the dyes for the fabrication of semi-transparent solar modules showing an active area of 1400 cm² and a power output of 10.5 W m^-2.

Energy & Environmental Science published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C12H19BrS, Formula: C12H19BrS.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Kim, Ji-Hoon published the artcileHigh open-circuit voltage organic photovoltaic cells fabricated using semiconducting copolymers consisting of bithiophene and fluorinated quinoxaline or triazole derivatives, Quality Control of 303734-52-3, the publication is Synthetic Metals (2014), 88-96, database is CAplus.

Two new alternating copolymers consisting of bithiophene and fluorinated quinoxaline or fluorinated benzotriazole derivatives, namely, poly[{4,4′-bis(2-ethylhexyl)-2,2′-bithiophene-5,5′-diyl}-alt-{6,7-difluoro-5,5-(5,8-di-2-thienyl-2,3-bis(4-octyloxyl)phenyl) quinoxaline}] (PBT-DFDTQX) and poly[{4,4′-bis(2-ethylhexyl)-2,2′-bithiophene-5,5′-diyl}-alt-{4,7-bis(5-thiophen-2-yl)-5,6-difluoro-2-(heptadecan-9-yl)-2H-benzo[d][1,2,3]triazole}] (PBT-DFDTBTz), were synthesized by the Stille cross coupling reaction for application in organic photovoltaic cells. The optical band gaps of PBT-DFDTQX and PBT-DFDTBTz are 1.77 and 1.90 eV, resp. The synthesized polymers showed relatively deep HOMO energy levels (-5.52 eV for PBT-DFDTQX and -5.54 eV for PBT-DFDTBTz) owing to the strong electron accepting nature of F. The polymers were used to fabricate bulk heterojunction photovoltaic devices with [6,6]-Ph C₇₁-butylic acid Me ester (PC₇₁BM) as the electron acceptor. Devices fabricated using PBT-DFDTQX and PBT-DFDTBTz showed the maximum power conversion efficiency (PCE) of 4.01 and 4.22%, resp., with a high open-circuit voltage of over 0.95 V under AM 1.5 G (100 mW/cm²) conditions.

Synthetic Metals published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C12H19BrS, Quality Control of 303734-52-3.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Liu, Shunjie published the artcileMolecular Motion in Aggregates: Manipulating TICT for Boosting Photothermal Theranostics, HPLC of Formula: 303734-52-3, the publication is Journal of the American Chemical Society (2019), 141(13), 5359-5368, database is CAplus and MEDLINE.

Planar donor and acceptor (D-A) conjugated structures are generally believed to be the standard for architecting highly efficient photothermal theranostic agents, in order to restrict intramol. motions in aggregates (nanoparticles). However, other channels of extra nonradiative decay may be blocked. Now this challenge is addressed by proposing an “abnormal” strategy based on mol. motion in aggregates. Mol. rotors and bulky alkyl chains are grafted to the central D-A core to lower intermol. interaction. The enhanced mol. motion favors the formation of a dark twisted intramol. charge transfer state, whose nonradiative decay enhances the photothermal properties. Result shows that small-mol. NIRb14 with long alkyl chains branched at the second carbon exhibits enhanced photothermal properties compared with NIRb6, with short branched chains, and much higher than NIR6, with short linear chains, and the com. gold nanorods. Both in vitro and in vivo experiments demonstrate that NIRb14 nanoparticles can be used as nanoagents for photoacoustic imaging-guided photothermal therapy. Moreover, charge reversal poly(β-amino ester) makes NIRb14 specifically accumulate at tumor sites. This study thus provides an excited mol. motion approach toward efficient phototheranostic agents.

Journal of the American Chemical Society published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C12H19BrS, HPLC of Formula: 303734-52-3.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Luo, Qi published the artcileSynthesis of Conjugated Main-Chain Ferrocene-Containing Polymers through Melt-State Polymerization, Synthetic Route of 303734-52-3, the publication is Organometallics (2019), 38(15), 2972-2978, database is CAplus.

Two kinds of conjugated main-chain ferrocene (Fc)-containing polymers, PFcT8 and PFcTP8, were successfully prepared through the facile melt-state polymerization (MSP) of corresponding monomers which combine the Fc motif with thiophene or thiophene-methane groups. The simple, low-cost MSP was chosen as the method, while thiophene or thiophene-methane groups served as reactive sites for its feature of easy polymerization by a simple heating process. The prepared metallopolymers were characterized by ¹H NMR, FTIR, and photochem. and electrochem. anal., metal content, and thermal stability. The results show that metallopolymers with a regular backbone and nearly quant. metal content were obtained. In addition, the metallopolymer PFcTP8 has the smallest optical band gap (absorption edge at 1100 nm) and high thermal stability among reported Fc-containing polymers, which indicates the thiophene-methane-based Fc-containing structure is a good candidate to construct functional polymers through MSP. The low band gap and high thermal stability of prepared conjugated metallopolymers show their potential application in conducting materials with high working temperature

Organometallics published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C12H19BrS, Synthetic Route of 303734-52-3.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Gao, Heqi published the artcileA dentin hypersensitivity treatment using highly stable photothermal conversion nanoparticles, Name: 2-Bromo-3-(2-ethylhexyl)thiophene, the publication is Materials Chemistry Frontiers (2021), 5(8), 3388-3395, database is CAplus.

Most of the currently available com. photothermal agents suffer from issues in terms of photothermal instability and low photothermal conversion efficiency (PCE), which indeed impair their practical applications in disease treatment. Herein, a type of biocompatible organic nanoparticles (namely NDTB NPs) for an effective photothermal treatment with a high PCE of 40.6% was developed, which showed far higher photothermal stability compared with that of the clin. used indocyanine green. In addition, NDTB NPs combined with laser are significantly more effective than only laser irradiation in phototheranostic dental hypersensitivity treatments. This study thus provides an insight into the development of advanced photothermal NPs for practical phototheranostic applications.

Materials Chemistry Frontiers published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C12H19BrS, Name: 2-Bromo-3-(2-ethylhexyl)thiophene.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Yao, Zhaoyang published the artcileConformational and compositional tuning of phenanthrocarbazole-based dopant-free hole-transport polymers boosting performance of perovskite solar cells, Quality Control of 303734-52-3, the publication is Journal of the American Chemical Society (2020), 142(41), 17681-17692, database is CAplus and MEDLINE.

Conjugated polymers are regarded as promising candidates for dopant-free hole-transport materials (HTMs) in efficient and stable perovskite solar cells (PSCs). Thus far, the vast majority of polymeric HTMs feature structurally complicated benzo[1,2-b:4,5-b′]dithiophene (BDT) analogs and electron-withdrawing heterocycles, forming a strong donor-acceptor (D-A) structure. Herein, a new class of phenanthrocarbazole (PC)-based polymeric HTMs (PC1, PC2, and PC3) has been synthesized by inserting a PC unit into a polymeric thiophene or selenophene chain with the aim of enhancing the π-π stacking of adjacent polymer chains and also to efficiently interact with the perovskite surface through the broad and planar conjugated backbone of the PC. Suitable energy levels, excellent thermostability, and humidity resistivity together with remarkable photoelec. properties are obtained via meticulously tuning the conformation and elemental composition of the polymers. As a result, PSCs containing PC3 as dopant-free HTM show a stabilized power conversion efficiency (PCE) of 20.8% and significantly enhanced longevity, rendering one of the best types of PSCs based on dopant-free HTMs. Subsequent exptl. and theor. studies reveal that the planar conformation of the polymers contributes to an ordered and face-on stacking of the polymer chains. Furthermore, introduction of the “Lewis soft” selenium atom can passivate surface trap sites of perovskite films by Pb-Se interaction and facilitate the interfacial charge separation significantly. This work reveals the guiding principles for rational design of dopant-free polymeric HTMs and also inspires rational exploration of small mol. HTMs.

Journal of the American Chemical Society published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C18H17NO8, Quality Control of 303734-52-3.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary