93296-41-4

Upstream product

• 942-06-3 4,5-dichlorophthalic anhydride 
• 141-97-9 ethyl acetoacetate 
• 1694-31-1 tert-butyl acetoacetate 
• 56962-08-4 4,5-dichlorophthalic acid 
• 99979-36-9 2-Ethoxycarbonyl-5,6-dichlorindan-1,3-dione 

Downstream Products

• 201812-19-3 Methyl 7,8-dichloro-4-(4-fluoro-phenyl)-2-isopropyl-5-oxo-5H-indeno[1,2-b]pyridine-3-carboxylate 

Relevant academic research and scientific papers

Efficient Semitransparent Organic Solar Cells with Tunable Color enabled by an Ultralow-Bandgap Nonfullerene Acceptor

Semitransparent organic solar cells (OSCs) show attractive potential in power-generating windows. However, the development of semitransparent OSCs is lagging behind opaque OSCs. Here, an ultralow-bandgap nonfullerene acceptor, “IEICO-4Cl”, is designed and synthesized, whose absorption spectrum is mainly located in the near-infrared region. When IEICO-4Cl is blended with different polymer donors (J52, PBDB-T, and PTB7-Th), the colors of the blend films can be tuned from purple to blue to cyan, respectively. Traditional OSCs with a nontransparent Al electrode fabricated by J52:IEICO-4Cl, PBDB-T:IEICO-4Cl, and PTB7-Th:IEICO-4Cl yield power conversion efficiencies (PCE) of 9.65 ± 0.33%, 9.43 ± 0.13%, and 10.0 ± 0.2%, respectively. By using 15 nm Au as the electrode, semitransparent OSCs based on these three blends also show PCEs of 6.37%, 6.24%, and 6.97% with high average visible transmittance (AVT) of 35.1%, 35.7%, and 33.5%, respectively. Furthermore, via changing the thickness of Au in the OSCs, the relationship between the transmittance and efficiency is studied in detail, and an impressive PCE of 8.38% with an AVT of 25.7% is obtained, which is an outstanding value in the semitransparent OSCs.

High-efficiency synthesis method of halogenated 1, 3-indanedione compound

The invention relates to the technical field of new material synthesis, in particular to a novel efficient synthesis method of an organic photoelectric intermediate material. The method is characterized in that the synthesis technology is simple, efficient, easy to operate and good in repeatability. The specific synthesis details are as follows: halogenated phthalic acid which is very easy to obtain in industry is used as a raw material, and a corresponding anhydride is obtained after dehydration treatment; different acid anhydrides are reacted with ethyl acetoacetate or tert-butyl acetoacetate at room temperature, and then carboxyl is mildly removed in a hydrochloric acid aqueous solution to obtain the halogenated 1, 3-indanedione compound. Simple and efficient synthesis of the organic intermediates is achieved through the method, synthesis raw materials are easy to obtain, the synthesis process is simple, the path is short, and the synthesis cost is greatly reduced.

Utilizing Vinylcyclopropane Reactivity: Palladium-Catalyzed Asymmetric [5+2] Dipolar Cycloadditions

Vinylcyclopropanes (VCPs) are commonly used in transition-metal-catalyzed cycloadditions, and the utilization of their recently realized reactivities to construct new cyclic architectures is of great significance in modern synthetic chemistry. Herein, a p

Revealing the new potential of an indandione unit for constructing efficient yellow thermally activated delayed fluorescence emitters with short emissive lifetimes

Simultaneously accomplishing a high efficiency and a slow efficiency roll-off at practical luminance levels remains challenging for thermally activated delayed fluorescence (TADF) organic light-emitting diodes (OLEDs). In this study, for the first time, we reveal the new potential of an indandione unit featuring double carbonyl moieties, which is widely used in organic solar cells, as an electron-accepting core for constructing efficient TADF emitters. As a proof of concept, two TADF emitters, 5PXZ-PIDO and 5,6PXZ-PIDO, are developed by connecting an indandione (IDO) core with electron-donating phenoxazine (PXZ) units via phenylene π-bridges. Impressively, both emitters exhibit a distinct TADF nature with short DF lifetimes of ～2 μs, and display relatively high photoluminescence quantum yields (ΦPLs) of over 70%. More importantly, a yellow OLED based on 5,6PXZ-PIDO achieves a high external quantum efficiency of 14.2% and an ultra-slow efficiency roll-off of 16.0% at a practical luminance of 1000 cd m-2, which is outstanding among previously reported carbonyl-based TADF emitters. This finding unlocks the huge potential of indandione-based molecules as TADF emitters for high-performance OLEDs.

CLPX INHIBITORY COMPOUNDS FOR THE TREATMENT OF MULTI RESISTANT STAPHYLOCOCCUS AUREUS VIRULENCE AND FOR THE TREATMENT OF LEUKEMIA

The present invention relates to antibiotic compounds and their use as ClpX inhibitors and in the treatment of bacterial infections, such as infections with multi-resistant Staphylococcus aureas, and in the treatment of leukemia. The present invention fur

A Chemical Disruptor of the ClpX Chaperone Complex Attenuates the Virulence of Multidrug-Resistant Staphylococcus aureus

The Staphylococcus aureus ClpXP protease is an important regulator of cell homeostasis and virulence. We utilized a high-throughput screen against the ClpXP complex and identified a specific inhibitor of the ClpX chaperone that disrupts its oligomeric sta

C- AND N-ALKYLATION OF 4,5-DIHYDRO-1H-INDENOPYRIDINE DERIVATIVES

2-Methyl-4-aryl-5-oxo-4,5-dihydro-1H-indenopyridine derivatives react with methyl iodide in an aprotic medium in the presence of alkaline agents to give C- and N-alkylation products, viz., 2,4a-dimethyl- and 1,2-dimethyl-4-aryl-5-oxo-4,5-dihydroind