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Orange-red liquid

Upstream product

• 18794-77-9 2-hexylthiophene 
• 61676-62-8 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 
• 76-09-5 2,3-dimethyl-2,3-butane diol 
• 10294-34-5 boron trichloride 
• 73183-34-3 bis(pinacol)diborane 
• 211737-28-9 2-bromo-5-hexylthiophene 
• 111-25-1 1-bromo-hexane 
• 25015-63-8 4,4,5,5-tetramethyl-[1,3,2]-dioxaboralane 

Downstream Products

• 173448-31-2 5-n-hexyl-2,2'-bithiophene 
• 1047684-56-9 4,4′-bis(2-hexylthiophene-5-yl)-2,2′-bipyridine 
• 1259858-93-9 2,5-dihexyl-3,6-bis[4-(5-hexylthiophene-2-yl)phenyl]pyrrolo[3,4-c]-pyrrole-1,4-dione 

Relevant academic research and scientific papers

Reticulated heterojunctions for photovoltaic devices

An organic semiconductor device is formed by the self-assembly on a transparent electrode surface. The donor (see picture; dibenzotetrathienocoronene, yellow layer) deposits as supramolecular cables, and the acceptor (C60, orange) subsequently infiltrates this network. This network provides a donor-acceptor interface that is interwoven at the nanoscale. When incorporated into a solar cell, the active layer provides large increases in power conversion efficiencies.

Ligand Engineering for the Efficient Dye-Sensitized Solar Cells with Ruthenium Sensitizers and Cobalt Electrolytes

Over the past 20 years, ruthenium(II)-based dyes have played a pivotal role in turning dye-sensitized solar cells (DSCs) into a mature technology for the third generation of photovoltaics. However, the classic I3-/I- redox couple limits the performance and application of this technique. Simply replacing the iodine-based redox couple by new types like cobalt(3+/2+) complexes was not successful because of the poor compatibility between the ruthenium(II) sensitizer and the cobalt redox species. To address this problem and achieve higher power conversion efficiencies (PCEs), we introduce here six new cyclometalated ruthenium(II)-based dyes developed through ligand engineering. We tested DSCs employing these ruthenium(II) complexes and achieved PCEs of up to 9.4% using cobalt(3+/2+)-based electrolytes, which is the record efficiency to date featuring a ruthenium-based dye. In view of the complicated liquid DSC system, the disagreement found between different characterizations enlightens us about the importance of the sensitizer loading on TiO2, which is a subtle but equally important factor in the electronic properties of the sensitizers.

Aggregation-Induced Emission and Aggregation-Promoted Photo-oxidation in Thiophene-Substituted Tetraphenylethylene Derivative

Aggregation-induced emission combined with aggregation-promoted photo-oxidation has been reported only in two works quite recently. In fact, this phenomenon is not commonly observed for AIE-active molecules. In this work, a new tetraphenylethylene derivative (TPE-4T) with aggregation-induced emission (AIE) and aggregation-promoted photo-oxidation was synthesized and investigated. The pristine TPE-4T film exhibits strong bluish-green emission, which turns to quite weak yellow emission after UV irradiation. Interestingly, after solvent treatment, the weakly fluorescent intermediate will become bright-yellow emitting. Moreover, the morphology of the TPE-4T film could be regulated by UV irradiation. The wettability of the TPE-4T microcrystalline surface is drastically changed from hydrophobic to hydrophilic. This work contributes a new member to the aggregation induced photo-oxidation family and enriches the photo-oxidation study of tetraphenylethylene derivatives.

Organic Semi-Conductor Low Molecular And Organic Thin Film Transistor Comprising The Same

The present invention refers to an organic semiconductor represented by formula 1 a provides molecular. Wherein, X and Y has hetero-atoms in a and can be selected from, R 1 and R 2 carbon atoms independently from each other 1 to 12 three linear, branched or annular alkyl, alkoxy alkyl two 1 to 12 carbon atoms, phenyl, aryl including anthracene and naphthalene, thiophene, furan, dibenzothiophene, dibenzofuran and and the pyridine flow into the can including hetero it will be an allyl , said R 1 and R 2. can be the same or different than each other. (by machine translation)

Orthogonal functionalization of cyclopenta[hi]aceanthrylenes

A synthetic strategy to prepare 2,7- or 4,9-functionalized cyclopenta[hi]aceanthrylenes that are capable of Suzuki cross-coupling reactions is demonstrated. This method has been utilized to create a series of thiophene derivatized compounds that were subsequently used to investigate the role of substitution pattern on the photophysical and electronic properties of cyclopenta[hi]aceanthrylenes. The orthogonal functionalization provides access to unique substitution patterns (e.g., cruciform-like architectures) and materials with small optical band gaps (1.22-1.97 eV).

Dye molecular structure device open-circuit voltage correlation in Ru(II) sensitizers with heteroleptic tridentate chelates for dye-sensitized solar cells

Dicarboxyterpyridine chelates with π-conjugated pendant groups attached at the 5- or 6-position of the terminal pyridyl unit were synthesized. Together with 2,6-bis(5-pyrazolyl)pyridine, these were used successfully to prepare a series of novel heteroleptic, bis-tridentate Ru(II) sensitizers, denoted as TF-11-14. These dyes show excellent performance in dye-sensitized solar cells (DSCs) under AM1.5G simulated sunlight at a light intensity of 100 mW cm -2 in comparison with a reference device containing [Ru(Htctpy)(NCS)3][TBA]3 (N749), where H3tctpy and TBA are 4,4′,4″-tricarboxy-2,2′:6′,2″- terpyridine and tetra-n-butylammonium cation, respectively. In particular, the sensitizer TF-12 gave a short-circuit photocurrent of 19.0 mA cm-2, an open-circuit voltage (VOC) of 0.71 V, and a fill factor of 0.68, affording an overall conversion efficiency of 9.21%. The increased conjugation conferred to the TF dyes by the addition of the π-conjugated pendant groups increases both their light-harvesting and photovoltaic energy conversion capability in comparison with N749. Detailed recombination processes in these devices were probed by various spectroscopic and dynamics measurements, and a clear correlation between the device VOC and the cell electron lifetime was established. In agreement with several other recent studies, the results demonstrate that high efficiencies can also be achieved with Ru(II) sensitizers that do not contain thiocyanate ancillaries. This bis-tridentate, dual-carboxy anchor configuration thus serves as a prototype for future omnibearing design of highly efficient Ru(II) sensitizers suited for use in DSCs.

CYCLOMETALATED TRANSITION METAL DYES

The present invention provides substituted cyclometalated dyes with wider absorbance bands in the visible spectrum. The compounds have hexacoordinate structures as shown in formula (I) where the central transition metal (M) is bonded to two substituted bi

Tris(thiocyanate) ruthenium(II) sensitizers with functionalized dicarboxyterpyridine for dye-sensitized solar cells

Panchromatic sensitizers: A series of ruthenium(II) compounds was prepared that contain three thiocyanate ligands and a novel chelating terpyridine ligand. The latter (see picture: colors indicate orbital occupation) serves as an effective and versatile l

A trisheteroleptic cyclometalated RuII sensitizer that enables high power output in a dye-sensitized solar cell

A trisheteroleptic cyclometalated ruthenium complex (see picture) bearing aliphatic substituents was synthesized, characterized, and evaluated in a dye-sensitized solar cell (DSSC). This thiocyanate-free dye, which has favorable structural elements to exh

Simple inexpensive boron electrophiles for direct arene borylation

Electrophilic direct borylation is facilitated, and arene substrate scope enhanced, by using electrophiles derived from inexpensive reagents; specifically an amine, BCl3 and AlCl3.