255710-07-7

Upstream product

• 106-37-6 1.4-dibromobenzene 
• 18908-66-2 3-bromomethylheptane 
• 106-46-7 para-dichlorobenzene 
• 87117-22-4 1,4-bis(2-ethylhexyl)benzene 

Downstream Products

• 1402843-19-9 C₃₄H₆₀B₂O₄ 
• 1402843-21-3 2,2'-(2,5-bis(2-ethylhexyl)-1,4'-phenylene)bis(3-methylsulfinyl)thiophene 
• 325151-14-2 C₅₂H₈₀ 
• 325144-91-0 [2,5-bis-(2-ethyl-hexyl)-4-prop-1-ynyl-benzyl]-phosphonic acid diethyl ester 
• 325144-98-7 1,4-Bis-(2-ethyl-hexyl)-2-prop-1-ynyl-5-((E)-styryl)-benzene 
• 325144-86-3 [2,5-bis-(2-ethyl-hexyl)-4-prop-1-ynyl-phenyl]-methanol 
• 325144-79-4 2,5-bis-(2-ethyl-hexyl)-4-prop-1-ynyl-benzaldehyde 
• 325144-76-1 4-bromo-2,5-bis-(2-ethyl-hexyl)-benzaldehyde 
• 331473-53-1 1-bromo-2,5-bis(2-ethylhexyl)-4-iodobenzene 

Relevant academic research and scientific papers

Naphthalene Diimide-Based Molecules for Efficient and Stable Perovskite Solar Cells

Naphthalene-diimide (NDI)-based molecules have shown an interesting behaviour within the field of perovskite solar cells, thanks to their promising application as electron transporting materials. In this paper, three novel NDI-containing molecules are synthesized and fully characterized, more specifically two polymers and an analogue small molecule. Each one of the NDI units contains an amine, either tertiary or quaternary, which is a moiety known for improving the conductivity. The newly synthesized compounds are suitable for the use as n-type buffer layers on the top of PC61BM, thanks to their appropriate energy levels and their solubility in polar solvents. The photovoltaic performances of the NDI-containing cells are highly comparable to those of the reference cells, which contain bathocuproine (BCP) as buffer layer. Furthermore, the stability of the NDI-containing cells is higher than that of the BCP reference.

Evolution from Tunneling to Hopping Mediated Triplet Energy Transfer from Quantum Dots to Molecules

Efficient energy transfer is particularly important for multiexcitonic processes like singlet fission and photon upconversion. Observation of the transition from short-range tunneling to long-range hopping during triplet exciton transfer from CdSe nanocrystals to anthracene is reported here. This is firmly supported by steady-state photon upconversion measurements, a direct proxy for the efficiency of triplet energy transfer (TET), as well as transient absorption measurements. When phenylene bridges are initially inserted between a CdSe nanocrystal donor and anthracene acceptor, the rate of TET decreases exponentially, commensurate with a decrease in the photon upconversion quantum efficiency from 11.6% to 4.51% to 0.284%, as expected from a tunneling mechanism. However, as the rigid bridge is increased in length to 4 and 5 phenylene units, photon upconversion quantum efficiencies increase again to 0.468% and 0.413%, 1.5-1.6 fold higher than that with 3 phenylene units (using the convention where the maximum upconversion quantum efficiency is 100%). This suggests a transition from exciton tunneling to hopping, resulting in relatively efficient and distance-independent TET beyond the traditional 1 nm Dexter distance. Transient absorption spectroscopy is used to confirm triplet energy transfer from CdSe to transmitter, and the formation of a bridge triplet state as an intermediate for the hopping mechanism. This first observation of the tunneling-to-hopping transition for long-range triplet energy transfer between nanocrystal light absorbers and molecular acceptors suggests that these hybrid materials should further be explored in the context of artificial photosynthesis.

ORGANIC TRANSISTOR, COMPOUND, ORGANIC SEMICONDUCTOR MATERIAL FOR NONLUMINESCENCE ORGANIC SEMICONDUCTOR DEVICE, MATERIAL FOR ORGANIC TRANSISTOR, COATING SOLUTION FOR NONLUMINESCENCE ORGANIC SEMICONDUCTOR DEVICE AND ORGANIC SEMICONDUCTOR FILM FOR NONLUMINES

The present invention provides an organic thin film transistor having high carrier mobility. Provided are an organic transistor having high carrier mobility, wherein a semiconductor active layer contains a compound having a repeat unit represented by any

Molecular rods based on oligo-spiro-thioketals

We report on an extension of the previously established concept of oligospiroketal (OSK) rods by replacing a part or all ketal moieties by thioketals leading to oligospirothioketal (OSTK) rods. In this way, some crucial problems arising from the reversible formation of ketals are circumvented. Furthermore, the stability of the rods toward hydrolysis is considerably improved. To successfully implement this concept, we first developed a number of new oligothiol building blocks and improved the synthetic accessibility of known oligothiols, respectively. Another advantage of thioacetals is that terephthalaldehyde (TAA) sleeves, which are too flexible in the case of acetals can be used in OSTK rods. The viability of the OSTK approach was demonstrated by the successful preparation of some OSTK rods with a length of some nanometers.

organinc semiconductor compound and organic solar cell having them

The present invention relates to a compound for an organic semiconductor material with a low band gap and an organic solar cell including the same. In the present invention, provided is a dithienobenzodithiophene derived compound which has outstanding hole mobility, a low band gap, a large light-absorbing area and a proper molecular level and accordingly is used as organic photoelectron device like an organic photo detector (OPD), an organic light emitting diode (OLED), an organic thin film transistor (OTFT) and an organic solar cell where the organic solar cell having the compound is provided, thereby leading to a power conversion efficiency (PCE).

Conjugated Organometallic Polymers Containing Vollhardt's Cyclobutadiene Complex: Aggregation and Morphologies

Organometallic polymers were prepared by acyclic diyne metathesis (ADIMET) or by Pd-catalyzed coupling of 1,3-diethynylcyclobutadiene(cyclopentadienyl)cobalt with a suitably substituted diiodobenzene. The polymers obtained by Heck coupling show a degree o