197144-27-7

Upstream product

• 24424-99-5 di-tert-butyl dicarbonate 
• 16292-17-4 bis(4-bromophenyl)amine 

Downstream Products

• 1241894-33-6 tert-butyl bis(4'-tert-butylbiphenyl-4-yl)carbamate 
• 1257664-60-0 C₇₄H₇₀N₆O₈ 
• 885503-13-9 4,4'-bis(N,N-bis(4-methoxyphenyl)amino)diphenylamine 

Relevant academic research and scientific papers

Understanding the guanidine-like cationic moiety for optimal binding into the DNA minor groove

Based on our previous positive results with bis-guanidine-like diaromatic compounds as DNA minor groove binders, we propose a new family: bis-2-amino-1,4,5,6-tetrahydropyrimidines. According to calculated parameters, these dicationic systems would have a more suitable size and lipophilicity for binding into the minor groove than previous series. Moreover, their DFT-optimised structures and docking into an AT oligomer model show that they would bind in the minor groove with good strength and without energy penalty. Hence, we prepared compounds 4 a-c and evaluated their binding to ssDNA and poly(dA-dT)2 by thermal denaturation experiments. The results showed that 4 a (CO) and 4 d (NH) were the best DNA binders. Compared to the previous series, 4 a-d are better binders than bis-guanidiniums but poorer than bis-2-aminoimidazolinium derivatives. Moreover, circular dichroism experiments using ssDNA and poly(dA-dT)2 confirmed binding into the minor groove. Based on our computational design as well as biophysical studies, we have been able to determine that the optimal interaction of guanidine-like dications in the minor grove occurs with bis-2-aminoimidazolinium systems.

Perovskite Solar Cells Based on Oligotriarylamine Hexaarylbenzene as Hole-Transporting Materials

A cobalt-catalyzed cyclotrimerization of bis(aryl)alkyne is used as an innovative tool to obtain hole-transport materials (HTMs). The novel HTM containing six units of oligotriarylamine (HAB1), characterized by UV-vis, cyclic voltammetry, DFT, and thermogravimetric analysis, confirms its suitability as an efficient HTM in PSCs. A PCE of 17.5% was obtained in HAB1-containing PSCs, a performance comparable to that obtained with spiro-OMeTAD and with slightly better thermal stability.

A carbazole di-aryl amines dendritic compound and its preparation method and application

The invention relates to a carbazole diarylamine dendritic compound as well as a preparation method and application of the carbazole diarylamine dendritic compound. According to the preparation method of the carbazole diarylamine dendritic compound, halogenated 9,9minute-spirobifluorene, a catalyst and a carbazole diarylamine compound are mixed with organic alkali; the mixture takes reaction under the inert gas protection by using xylene as a solvent; re-crystallization is performed for purification; the carbazole diarylamine dendritic compound obtained shown as the accompanying drawing is obtained. The prepared carbazole diarylamine dendritic compound has the advantages that the process and a refining method are simple and convenient; the carbazole diarylamine dendritic compound is very suitable for industrial production; better heat stability and better morphologic stability are realized; when the carbazole diarylamine dendritic compound is used as a hole-transporting material of a perovskite solar cell, higher photovoltaic conversion efficiency is realized.

A two-benzofuran derivative and its preparation method and application

The invention relates to a derivative of dibenzofuran and a preparation method and application thereof. The preparation method of the derivative of the dibenzofuran comprises the steps that carbon-nitrogen coupling is performed on p-bromoanisole and p-methoxyaniline to obtain a first precursor; a two-step reaction is performed on the first precursor and 4,4'-dibromodiphenylamine protected by butyloxycarbonyl to obtain a second precursor, and a two-step reaction is performed on the first precursor and 3,6-dibromocarbazole protected by butyloxycarbonyl to obtain a third precursor; carbon-nitrogen coupling is performed on all the precursors and 2,8-dibromodibenzofuran under the action of a palladium catalyst to obtain the derivative of the dibenzofuran. The prepared derivative of the dibenzofuran is easy to synthesize, low in cost, high in glass transition temperature and good in heat stability, is a hole-transport material with the good properties and has the good effect when the derivative is applied to perovskite solar cells.

A 9,9 the- [...][...] dendritic compound, preparation method and application

The invention relates to a dendritic compound using 9,9'-spirobifluorene as a kernel and methoxyl group substituted diarylamine as a branch compound, and the application of the dendritic compound in perovskite solar batteries, and belongs to the field of the preparation of solar battery materials. The preparation method comprises the following steps: firstly, reacting 4,4'-dibrom diphenylamine which is protected through tert-butyloxycarbonyl with 4,4'-dimethoxy diphenylamine or 4,4'-N,N'-(4,4'-dimethoxy diphenyl) diphenylamine so as to generate a branch with a protecting group, and then carrying out deprotection under the action of trifluoroacetic acid so as to generate a first-generation branch and a second-generation branch respectively; reacting the first-generation branch or the second-generation branch respectively with the bromo-9,9'-spirobifluorene compound under the action of a palladium catalyst so as to obtain a first-generation 9,9'-spirobifluorene spirofluorene dendritic compound or a second-generation 9,9'-spirobifluorene spirofluorene dendritic compound. The dendritic compound disclosed by the invention has better heat stability and solubility, is used as a hole transport material for the perovskite solar batteries, and has higher photoelectric conversion efficiency.

Two methoxyaniline-substituted dibenzofuran derivatives as hole-transport materials for perovskite solar cells

2,2′,7,7′-Tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (Spiro-OMeTAD), one of the classical organic photoelectric materials, has been widely used as a hole transport material (HTM) in perovskite solar cells (PSCs) due to its relatively higher conductivity, easier film formation, weak absorption in the visible region, etc. However, the complex synthesis process and the high synthesis cost of Spiro-OMeTAD severely limit the commercialization of this material. In this work, two economical methoxyaniline-substituted dibenzofuran derivatives, BF-002 and BF-003, are synthesized and successfully used as hole-transport materials in perovskite solar cells (PSCs). The important properties including light absorption, thermal stability, energy level, conductivity, as well as photovoltaic performance are systematically demonstrated. The highest power conversion efficiencies of the PSCs based on BF-002 and BF-003 are 14.20% and 14.07%, respectively, comparable to that of the PSCs based on Spiro-OMeTAD.

Photoinduced electron transfer in rhenium(I)-oligotriarylamine molecules

Two molecular triads with an oligotriarylamine multielectron donor were synthesized and investigated with a view to obtaining charge-separated states in which the oligotriarylamine is oxidized 2-fold. Such photoinduced accumulation of multiple redox equivalents is of interest for artificial photosynthesis. The first triad was comprised of the oligotriarylamine and two rhenium(I) tricarbonyl diimine photosensitizers each of which can potentially accept one electron. In the second triad the oligotriarylamine was connected to anthraquinone, in principle an acceptor of two electrons, via a rhenium(I) tricarbonyl diimine unit. With nanosecond transient absorption spectroscopy (using an ordinary pump-probe technique) no evidence for the generation of 2-fold oxidized oligotriarylamine or 2-fold reduced anthraquinone was found. The key factors limiting the photochemistry of the new triads to simple charge separation of one electron and one hole are discussed, and the insights gained from this study are useful for further research in the area of charge accumulation in purely molecular (nanoparticle-free) systems. An important problem of the rhenium-based systems considered here is the short wavelength required for photoexcitation. In the second triad, photogenerated anthraquinone monoanion is protonated by organic acids, and the resulting semiquinone species leads to an increase in lifetime of the charge-separated state by about an order of magnitude. This shows that the proton-coupled electron transfer chemistry of quinones could be bene ficial for photoinduced charge accumulation. (Chemical Equation Presented).

Highly porous conjugated polymers for selective oxidation of organic sulfides under visible light

High surface area porous conjugated polymers were synthesized via the high internal phase emulsion polymerization technique and micropore engineering as efficient heterogeneous photocatalysts for highly selective oxidation of organic sulfides to sulfoxides under visible light. This journal is the Partner Organisations 2014.

Tunable emissive thin films through ICT photodisruption of nitro-substituted triarylamines

UV-assisted photocleavage in the solid state of orange emitting nitro-substituted triarylamines leads to the appearance of blue emission following photodisruption of the ICT state.

Preparation and characterization of N-Anisyl-substituted Hexaaza[1 6]paracyclophane

Localized or delocalized? For the first time, a cyclic oligoaniline, hexaaza[16]paracyclophane, has been prepared (see picture; carbon: gray; nitrogen: blue; hydrogen: light gray). The macrocycle exhibits a high electron-donating ability, and furthermore, the spin of the corresponding radical cation was delocalized over the macrocyclic molecular backbone.