35763-07-6

Upstream product

• 111-83-1 1-bromo-octane 
• 106-41-2 4-bromo-phenol 
• 96693-05-9 1-bromo-4-octyloxybenzene 
• 59417-06-0 1,4-dimethyl-2,3-dioxopiperazine 
• 33288-79-8 4,4'-dihydroxybenzil 
• 79-37-8 oxalyl dichloride 
• 1818-07-1 octyloxybenzene 

Downstream Products

• 115570-62-2 bis[1,2-di(4-n-octyloxyphenyl)ethane-1,2-dithiolene]nickel 
• 1160210-77-4 bis[1,2-di(4-n-octyloxyphenyl)ethane-1,2-dithiolene]gold 
• 1233872-22-4 4,9-dibromo-6,7-bis(4-(octyloxy)phenyl)-[1,2,5]thiadiazolo[3,4-g]quinoxaline 
• 1263039-56-0 5,8-bis(hexylthiophen-2-yl)-2,3-bis(4-(octyloxy)phenyl)quinoxaline 
• 1021849-53-5 2,3-bis(4-octyloxyphenyl)-5,8-bis(5'-bromo-dithien-2-ly)quinoxaline 
• 1358763-34-4 2,3-bis(4-octyloxyphenyl)-5,8-bis(4'-hexyl-2,2'-bithiophene-5-ly)quinoxaline 
• 1358763-36-6 2,3-bis(4-octyloxyphenyl)-5,8-bis(5'-bromo-4'-hexyl-2,2'-bithiophene-5-ly)quinoxaline 
• 1304514-33-7 C₄₈H₆₈B₂N₂O₆ 
• 1304514-34-8 C₆₀H₈₂N₂O₂S₂ 
• 1453083-90-3 6,7-difluoro-2,3-bis(4-(octyloxy)phenyl)-5,8-di(thiophen-2-yl)quinoxaline 
• 1443827-62-0 5,8-bis(5-bromothiophen-2-yl)-6,7-difluoro-2,3-bis(4-(octyloxy)phenyl)quinoxaline 
• 1415801-23-8 5,8-dibromo-6,7-difluoro-2,3-bis(4-(octyloxy)phenyl)quinoxaline 

Relevant academic research and scientific papers

Synthesis and characterization of fully conjugated donor-acceptor-donor triblock copolymers

A synthetic approach is established to provide a monofunctional telechelic poly(3-octylthiophene) (P3OT) bearing a single bromine-substituted end group that is of potential use in the preparation of well-defined block copolymers. Telechelic P3OT was prepared via a chain growth process by a catalyst-transfer condensation polymerization (CTCP) of 5-bromo-4-octyl-2-thienylmagnesium iodide initiated by a phenylnickel(II) initiator. Optimization of the conditions for quenching the reaction allowed for the installation an α-bromo functionality at the terminus of the polymer. We demonstrate the utility of this well-defined monofunctional polymer, Ph-P3OT-Br, by coupling it to a poly(quinoxaline) (PQ) bearing boronate ester end groups to provided a new class of donor-acceptor-donor (D-A-D) triblock copolymers. The formation of the triblock copolymers was confirmed by gel-permeation chromatography (GPC) and 1H NMR spectroscopy. The optical properties of the polymers were investigated using UV-visible absorption and fluorescence spectroscopy. Efficient quenching of the fluorescence from the individual blocks of the triblock copolymers is consistent with the occurrence of electron transfer. AFM images illustrate a nanoscale phase separation of the electron-rich P3OT and electron-poor PQ blocks.

Synthesis and characterization of quinoxaline-based thiophene copolymers as photoactive layers in organic photovoltaic cells

A series of new quinoxaline-based thiophene copolymers (PQx2T, PQx4T, and PQx6T) was synthesized via Yamamoto and Stille coupling reactions. The M ws of PQx2T, PQx4T, and PQx6T were found to be 20,000, 12,000, and 29,000, with polydispersity in

Synthesis and photovoltaic properties of quinoxaline-based alternating copolymers for high-efficiency bulk-heterojunction polymer solar cells

A series of quinoxaline-based copolymers, namely, poly[N-9″- heptadecanyl-2,7-carbazole-alt-5,5-(5′,8′-di-2-thienylquinoxaline)] (P1), poly[N-9″-heptadecanyl-2,7-carbazole-alt-5,5-(5′,8′-di- 2-thienyl-2,3-bis(4-octyloxyl)phenyl)quinoxaline] (P2), and poly

Discotic liquid crystals of transition metal complexes, 31: Establishment of mesomorphism and thermochromism of bis[1,2-bis(4-n-alkoxyphenyl)ethane-1,2-dithiolene]nickel complexes

Two series of bis[1,2-bis(4-n-alkylphenyl)ethane-1,2-dithiolene]nickel, Cn-Ni (n= 1-12), and bis[1,2-bis(4-n-alkoxyphenyl)ethane-1,2-dithiolene]nickel, CnO-Ni(n = 1-12, 14, 16, 18), have been synthesized. Their mesomorphism, thermochromism, supramolecular structures and π-acceptor property have been investigated by using different scanning calorimetry, polarizing microscopy, temperature-dependent X-ray diffraction technique, electronic spectroscopy and cyclic voltammetry. From the X-ray diffraction and electronic spectral results, it was established that the CnO-Ni complexes for n ≤ 10 exhibit two differently colored discotic lamellar (DL) mesophases whereas none of the Cn-Ni complexes has a mesophase, and that the thermochromism (brown→green) is attributable to a slow transformation from the Ni-Ni bonded dimers to the Ni-S bonded dimers.

Synthesis of Alkyl- and Alkoxy-Substituted Benzils and Oxidative Coupling to Tetraalkoxyphenanthrene-9,10-diones

Intermolecular Friedel-Crafts acylation of various substituted alkyl- or alkoxybenzenes with oxalyl chloride using carbon disulfide as solvent gave rise to the benzils 1a-k.Subsequent intramolecular oxidative coupling with either thallium(III) oxide/trifluoroacetic acid or vanadium(V) oxyfluoride/boron trifluoride diethyl etherate resulted in the corresponding phenanthrene-9,10-diones 2a-d.It has been shown that oxygen functionalities at the 3,3',4, and 4'positions are necessary for coupling to occur.These substituted benzils and phenanthrene-9,10-diones constitute precursors for ligands in the field of discotic metallomesogens or polymeric mesogens.