1155-66-4Relevant academic research and scientific papers
A rigid ringlike molecule: Large second-order nonlinear optical performance, good temporal and thermal stability, and ideal spherical structure conforming to the site isolation principle
Chen, Pengyu,Liu, Guangchao,Zhang, Huanyu,Jin, Meng,Han, Mengmeng,Cheng, Ziyao,Peng, Qian,Li, Qianqian,Li, Zhen
, p. 6784 - 6791 (2018)
In this paper, according to the principle of site isolation, a ringlike molecule of R1, based on the second-order nonlinear optical chromophore of FTC (Fang's Thermally-Stable Chromophore), was designed and synthesized, in which, the heads and waists of two FTC moieties were locked together through chemical bonds, respectively. Thanks to the ideal spherical structure and good alignment of the two pieces of FTC moieties, R1 exhibited an ultra high nonlinear optical effect with a d33 value of 562 pm V-1 at a wavelength of 1950 nm, which could still retain 80% at a very high temperature of 145 °C.
A Nanocrystal Catalyst Incorporating a Surface Bound Transition Metal to Induce Photocatalytic Sequential Electron Transfer Events
Beard, Matthew C.,Chen, Xihan,Han, Chuang,Lin, Yixiong,Martin, Jovan San,Miller, Collin,Wang, Xiaoming,Yamamoto, Nobuyuki,Yan, Yanfa,Yan, Yong,Yazdi, Sadegh,Zeng, Xianghua
supporting information, p. 11361 - 11369 (2021/08/16)
Heterogeneous photocatalysis is less common but can provide unique avenues for inducing novel chemical transformations and can also be utilized for energy transductions, i.e., the energy in the photons can be captured in chemical bonds. Here, we developed a novel heterogeneous photocatalytic system that employs a lead-halide perovskite nanocrystal (NC) to capture photons and direct photogenerated holes to a surface bound transition metal Cu-site, resulting in a N-N heterocyclization reaction. The reaction starts from surface coordinated diamine substrates and requires two subsequent photo-oxidation events per reaction cycle. We establish a photocatalytic pathway that incorporates sequential inner sphere electron transfer events, photons absorbed by the NC generate holes that are sequentially funneled to the Cu-surface site to perform the reaction. The photocatalyst is readily prepared via a controlled cation-exchange reaction and provides new opportunities in photodriven heterogeneous catalysis.
COLORING RESIN COMPOSITION, COLOR FILTER, AND IMAGE DISPLAY DEVICE
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Paragraph 0211; 0214; 0216, (2018/06/06)
PROBLEM TO BE SOLVED: To provide a coloring resin composition that has high color purity, satisfies heat resistance, light resistance, and a voltage retention rate necessary for long-term reliability, which are required in the production process of a color display, and does not color migration to an adjacent color pattern. SOLUTION: A coloring resin composition contains a colorant, a solvent and a binder resin. The colorant contains a multimer of a triarylmethane-based compound having a naphthalene ring represented by dye B. SELECTED DRAWING: None COPYRIGHT: (C)2018,JPOandINPIT
A new route to N-aromatic heterocycles from the hydrogenation of diesters in the presence of anilines
Shi, Yiping,Kamer, Paul C. J.,Cole-Hamilton, David J.,Harvie, Michelle,Baxter, Emma F.,Lim, Kate J. C.,Pogorzelec, Peter
, p. 6911 - 6917 (2017/10/05)
The hydrogenation of dicarboxylic acids and their esters in the presence of anilines provides a new synthesis of heterocycles. [Ru(acac)3] and 1,1,1-tris(diphenylphosphinomethyl)ethane (triphos) gave good to excellent yields of the cyclic amines at 220 °C. When aqueous ammonia was used with dimethyl 1,6-hexadienoic acid, ?-caprolactam was obtained in good yield. A side reaction involving alkylation of the amine by methanol was suppressed by using diesters derived from longer chain and branched alcohols. Hydrogenation of optically pure diesters (dimethyl (R)-2-methylbutanedioate and dimethyl (S)-2-methylbutanedioate) with aniline afforded racemic 3-methyl-1-phenylpyrrolidine in 78% yield.
Heterogeneous bimetallic Pt-Sn/γ-Al2O3 catalyzed direct synthesis of diamines from N-alkylation of amines with diols through a borrowing hydrogen strategy
Wang, Liandi,He, Wei,Wu, Kaikai,He, Songbo,Sun, Chenglin,Yu, Zhengkun
supporting information; experimental part, p. 7103 - 7107 (2012/01/05)
Direct synthesis of diamines has been efficiently realized from the N-alkylation of amines with diols by means of heterogeneous bimetallic Pt-Sn/γ-Al2O3 catalyst (0.5 wt % Pt, molar ratio Pt:Sn = 1:3) through a 'Borrowing Hydrogen' strategy under ligand-free conditions. The present methodology provides an environmentally benign route to diamines.
