1756-32-7Relevant academic research and scientific papers
Synthesis of asymmetrically substituted head-to-head polyacetylenes from 2,3-disubstituted-1,3-butadienes
Yu, Yunhai,Qu, Chengke,He, Junpo
, p. 395 - 402 (2019)
Asymmetrically substituted head-to-head polyacetylenes with phenyl and triphenylamine, thienyl or pyrenyl side groups were synthesized through anionic or controlled radical polymerization of 2,3-disubstituted-1,3-butadienes and subsequent dehydrogenation process. Anionic polymerizations of the designed monomers bearing pendent triphenylamine and thienyl group gave narrow disperse disubstituted precursor polybutadienes with exclusive 1,4- or 4,1-structure, which were confirmed by GPC and NMR measurements. In addition, the monomers possessing pyrenyl group were polymerized via nitroxide mediated radical polymerization and the resulting polymers were obtained with controlled molecular weight and low polydispersities. These polybutadiene precursors were then dehydrogenated in the presence of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone. Thus asymmetrically substituted head-to-head polyacetylenes were obtained as indicated by 1H NMR. The properties of polybutadiene precursors and the corresponding polyacetylenes were analyzed by UV–vis, DSC, and TGA.
Reversible Addition of Cyanide to Triphenylamine Attached Difluoroboron β-Diketonate Facilitated Selective Colorimetric and Fluorimetric Detection of Cyanide Ion
Balamurugan, Rengarajan,Suhasini, Ramalingam,Tamilarasan, Duraiyarasu,Thiagarajan, Viruthachalam
, (2020)
Nucleophilic addition of cyanide on a new triphenylamine attached difluoroboron β-diketonate {4-[4-(diphenylamino) phenyl]-2,2-difluoro-6-methyl-2H-1,3,2-dioxaborinin-1-ium-2-uide (C4)} breaks the conjugation readily and thereby offers efficient and selec
NLOphoric Triphenylamine Derived Donor-π-Acceptor-π-Donor Based Colorants: Synthesis, Spectroscopic, Density Functional Theory and Z-scan Studies
Raikwar, Manish M.,Mathew, Elizabeth,Varghese, Manu,Joe, Issac H.,Nethi, Sekar Nagaiyan
, p. 931 - 945 (2019)
Three Donor-π-Acceptor-π-Donor type styryl dyes (5a-c) with different secondary donors are synthesized and characterized to study their nonlinear and linear optical properties. The structure–property relationships of the dyes are described in the light of systematic photophysical and theoretical investigations. The photophysical characteristics of 5a-c are influenced by the polarity of the medium, with an appreciable bathochromic shift in emission (5b = 81 nm) and large Stoke shifts (5b = 104–173 nm) in polar solvents. 5a-c showed intramolecular charge transfer characteristics recognized with the help of emission solvatochromism, solvent polarity graphs, natural bond orbital analysis and HOMO–LUMO energy difference. The optimized geometry and frontier molecular orbitals reveal that the electron donation takes place from secondary donors and not from a fixed donor (triphenylamine) which is more twisted. The nonlinear optical properties obtained using solvent induced spectral shift and computational methods are found within the limiting values. Z-scan results reveal saturable kind of behavior for 5a, 5b and 5c, whereas 5a and 5b show reverse saturable kind of behavior in acetone and ethanol and hence give optical limiting values. The two-photon absorption cross section described by two-level approximation is highest for 5b (251–300 GM).
High quantum yield both in solution and solid state based on cyclohexyl modified triphenylamine derivatives for picric acid detection
Zhang, Yuyang,Pan, Jianting,Zhang, Chenyang,Wang, Haowei,Zhang, Gaobin,Kong, Lin,Tian, Yupeng,Yang, Jiaxiang
, p. 257 - 266 (2015)
Five triphenylamine derivatives containing cyclohexyl have been designed and synthesized with a solvent-free green procedure. The compounds possess high quantum yields both in solution and solid state. Our investigation shows that the steric effects of th
A new class of triphenylamine-based novel sensitizers for DSSCs: A comparative study of three different anchoring groups
Patil, Dinesh,Jadhav, Manoj,Avhad, Kiran,Chowdhury, Towhid H.,Islam, Ashraful,Bedja, Idriss,Sekar, Nagaiyan
, p. 11555 - 11564 (2018)
In this paper, we report a new class of triphenylamine-based sensitizers with different anchoring groups to rationalize the effects of the anchoring group on the power conversion efficiencies (PCE) of these sensitizers in dye sensitized solar cells (DSSCs
Tuning of the excitation wavelength in Eu3+-aminophenyl based polyfluorinated β-diketonate complexes: a red-emitting Eu3+-complex encapsulated in a silica/polymer hybrid material excited by blue light
Usha Gangan,Reddy
, p. 15924 - 15937 (2015)
We describe herein the synthesis, characterization and photophysical properties of a series of europium complexes based on three aminophenyl based polyfluorinated β-diketonates, namely, 1-(4-aminophenyl)-4,4,5,5,5-pentafluoro-3-hydroxypent-2-en-1-one, 1-(
Near-Infrared Photoactive Aza-BODIPY: Thermally Robust and Photostable Photosensitizer and Efficient Electron Donor
?apok, ?ukasz,Cie?lar, Igor,Nowakowska, Maria,P?dziński, Tomasz,Stadnicka, Katarzyna M.
, (2020)
We report herein the synthesis of aza-BODIPY substituted with strongly electron-donating p-(diphenylamino)phenyl substituents (p-Ph2N?) at 3,5-positions. The presence of p-Ph2N? groups lowers the energy of the singlet excited state (
A Pd/Cu-Free magnetic cobalt catalyst for C-N cross coupling reactions: synthesis of abemaciclib and fedratinib
Hajipour, Abdol R.,Khorsandi, Zahra,Sarfjoo, Mohamad Reza,Varma, Rajender S.
supporting information, p. 5222 - 5229 (2021/07/29)
Herein, the synthesis of a nano-catalytic system comprising magnetic nanoparticles as the core and edible natural ligands bearing functional groups as supports for cobalt species is described. Subsequent to its characterization, the efficiency of the catalyst was investigated for C-N cross-coupling reactions using assorted derivatives of amines and aryl halides. This novel and easily accessible Pd- and Cu-free catalyst exhibited good catalytic activity in these reactions using γ-valerolactone (GVL) at room temperature; good recyclability bodes well for the future application of this strategy. The introduced catalytic system is attractive in view of the excellent efficiency in an array of coupling reactions and its versatility is illustrated in the synthesis of abemaciclib and fedratinib, which are FDA-approved new and significant anti-cancer medicinal compounds that are prepared under green reaction conditions.
Photoelectric conversion element, imaging device, optical sensor, and method of using photoelectric conversion element
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Page/Page column 101-103, (2020/02/29)
The present invention provides a photoelectric conversion element having a photoelectric conversion film which exhibits excellent photoelectric conversion efficiency and responsiveness, an imaging device, an optical sensor, and a method of using a photoelectric conversion element. In the photoelectric conversion element of the invention, a photoelectric conversion material contains at least one selected from the group consisting of a compound represented by General formula (1), a compound represented by General formula (2), and a compound represented by General formula (3).
DIPHENYLAMINO-METHYLENE MALONONITRILE BASED COMPOUNDS AS FLUORESCENCE PROBES
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Page/Page column 20, (2020/03/23)
The present invention provides compounds of formula (I) and formula (II): or a pharmaceutically acceptable salt or a stereoisomer thereof; wherein, ring A and ring B have the meanings given in the specification. The compounds of the present disclosure are useful as fluorescence probe in detecting tubulin in a sample and therefore useful for the diagnosis of tubulin and its associated diseases like cancer in a subject.
