602-15-3Relevant articles and documents
Efficient C-F and C-C activation by a novel N-heterocyclic carbene-nickel(0) complex
Schaub, Thomas,Radius, Udo
, p. 5024 - 5030 (2005)
The NHC-stabilized complex [Ni2(iPr2Im) 4(cod)] (1) was isolated in good yield from the reaction of [Ni-(cod)2] with 1,3-diisopropylimidazole-2-ylidene (iPr 2Im). Compound 1 is a source of the [Ni(iPr
Exploring highly efficient light conversion agents for agricultural film based on aggregation induced emission effects
Qi, Yunpeng,Wang, Yongtao,Yu, Yongjiang,Liu, Zhiyong,Zhang, Yan,Qi,Zhou, Changtong
, p. 11291 - 11297 (2016)
Aggregation-induced emission (AIE) is a unique photo-physical phenomenon that has become an emerging and hot research area. It has a wide range of applications due to its excellent luminous properties. In this paper, five compounds and their corresponding light conversion films were prepared based on AIE effects and the thermally activated delayed fluorescence (TADF) phenomenon. Furthermore, ultraviolet conversion, dispersion and photo-physical properties such as UV-vis spectra, fluorescence spectra, and photo stability as well as the mechanical properties of the light conversion films were investigated in detail. The results reveal that triphenylacrylonitrile (TPA) exhibits excellent photo stability and ultraviolet light conversion properties. In addition, the fluorescence emission spectrum of TPA corresponds well with the absorption spectrum of plants in the blue-violet region. In particular, the light conversion film with added TPA also shows enhanced mechanical properties and slightly lower visible light transmittance (3.79%) compared to PVC blank film. Based on the photo stabilities of the five compounds, it can be concluded that the electron-withdrawing cyano group can increase the photo stability of TPA, while carbazole substituents are proved to have an uncertain effect on the rate of photo oxidation, which is attributed to the electron-donating properties of carbazole and increased molecular distortion or rigidity. Finally, it is worth mentioning that this is the first report utilizing AIE-active luminogens (AIEgens) in agricultural light conversion film.
Synthesis of Polycyclic Aromatic Hydrocarbons by the Pd-Catalyzed Annulation of Alkynes
Larock, Richard C.,Doty, Mark J.,Tian, Qingping,Zenner, John M.
, p. 7536 - 7537 (1997)
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Quantitative application of principal component analysis and self-modeling spectral resolution to product analysis of tetraphenylethylene photochemical reactions
Bunker, Christopher E.,Hamilton, Norwood B.,Sun, Ya-Ping
, p. 3460 - 3465 (1993)
Tetraphenylethylene readily undergoes photochemical reactions in room-temperature solutions. Principal component analysis and self-modeling spectral resolution are applied to the characterization of reaction products. On the basis of principal component a
Aromatic Metamorphosis of Thiophenes by Means of Desulfurative Dilithiation
Kaga, Atsushi,Iida, Hirokazu,Tsuchiya, Shun,Saito, Hayate,Nakano, Koji,Yorimitsu, Hideki
supporting information, p. 4567 - 4572 (2021/02/12)
A new mode of aromatic metamorphosis has been developed, which allows thiophenes and their benzo-fused derivatives to be converted to a variety of exotic heteroles. This transformation involves 1) the efficient generation of key 1,4-dianions by means of desulfurative dilithiation with lithium powder and 2) the subsequent trapping of the dianions with heteroatom electrophiles in a one-pot manner. Via the desulfurative dilithiation, the sulfur atoms of thiophenes are replaced also with a carbon–carbon double bond or a 1,2-phenylene for the construction of benzene rings.
Rhodaelectrocatalysis for Annulative C?H Activation: Polycyclic Aromatic Hydrocarbons through Versatile Double Electrocatalysis
Kong, Wei-Jun,Finger, Lars H.,Oliveira, Jo?o C. A.,Ackermann, Lutz
supporting information, p. 6342 - 6346 (2019/04/08)
Rapid access to structurally diversified polycyclic aromatic hydrocarbons (PAHs) in a controlled manner is of key significance in materials sciences. Herein, we describe a strategy featuring two distinct electrocatalytic C?H transformations for the synthesis of novel nonplanar PAHs. The combination of rhodaelectrooxidative C?H activation/[2+2+2] alkyne annulation of easily accessible boronic acids with electrocatalytic cyclodehydrogenation provided modular access to diversely substituted PAHs with electricity as a sustainable oxidant. The unique molecular topology as well as the photophysical and electronic properties of the thus obtained PAHs were fully analyzed. The unique power of this metallaelectrocatalysis method was demonstrated by the chemoselective assembly of synthetically useful iodo-substituted PAHs.