1571-30-8Relevant articles and documents
Oriented crystallization of CuSO4·5H2O under a monolayer of a novel amphiphilic ligand, 8-hexadecyloxyquinaldic acid
Tang, Ruikang,Jiang, Chaoyang,Tai, Ziliou
, p. 3371 - 3375 (1997)
A new amphiphilic ligand, 8-hexadecyloxyquinaldic acid (HQA), has been synthesized and the characteristics of its monolayer on pure water and on CuSO4 aqueous solution have been examined. The HQA monolayer can interact with copper ions in the subphase, and crystallization of CuSO4·5H2O is induced under the monolayer. In order to understand the relationship between the different states of the monolayer and the induced inorganic crystallization, several typical states of the monolayer were chosen in our experiment. The results show that, when the monolayer is in the gas or liquid phase, its ability to control the oriented crystallization is poor. However, rather than the most dense phase, the most favorable state for oriented crystallization is the one with an area per molecule A = 17.0 A2, which could be considered as a liquid solid phase. This is attributed to a coordination effect and lattice matching at the inorganic/organic interface. Our research suggests that the state of the monolayer is a very important factor during the process of induced oriented crystallization.
Synthesis, spectroscopy and computational studies of selected hydroxyquinoline carboxylic acids and their selected fluoro-, thio-, and dithioanalogues
Nycz, Jacek E.,Malecki, Grzegorz J.
, p. 159 - 168 (2013)
The faster and more efficient new synthetic methodologies of crystalline hydroxyquinoline carboxylic acids and their fluoro-, thio- and dithioanalogues were elaborated. The FTIR, multinuclear NMR, UV-Vis and single crystal X-ray characteristics of the series of quinoline carboxylic acids have been determined experimentally and rationalized on the basis of DFT calculation method with B3LYP functional.
Fluorescent schiff base probes for sequential detection of Al3+ and F? and cell imaging applications
Fu, Jiaxin,Li, Bai,Mei, Huihui,Chang, Yongxin,Xu, Kuoxi
, (2019/11/11)
Two novel Schiff-base fluorescent probers SQ and NQ based on 8-hydroxyquinoline moiety were designed and synthesized. The both probes were capable of binding with Al3+ by naked eye detection to produce a significant fluorescence enhancement response with a detection limit of 1.48 × 10?8 and 4.23 × 10?8 M, respectively. At the same time, the formed complexes SQ-Al3+ and NQ-Al3+ could sequentially detect F?, and the detection limits of F? were determined to be 1.64 × 10?7 and 3.58 × 10?8 M, respectively. The “off-on-off” fluorescence response process demonstrated that the binding were reversible. The probes were further successfully utilized to detect Al3+ and F? in vitro PC12 cells.
Hypervalent Iodine(III)-Mediated Regioselective Cyanation of Quinoline N-Oxides with Trimethylsilyl Cyanide
Xu, Feng,Li, Yuqin,Huang, Xin,Fang, Xinjie,Li, Zhuofei,Jiang, Hongshuo,Qiao, Jingyi,Chu, Wenyi,Sun, Zhizhong
, p. 520 - 525 (2018/12/13)
A regioselective cyanation of quinoline N-oxides with trimethylsilyl cyanide was developed by using (Diacetoxyiodo) benzene (PIDA) as mediated hypervalent iodine(III) reagent under metal-free and base-free reaction conditions to obtain 2-cyanoquinolines. The efficient PIDA reagent could play the role of an activator of the substrates and an accelerator of N?O bond cleavage. The reaction system featured a wide range of substrate suitability and high yields. The procedure was enlarged gram-scale to synthesize the tuberculosis (TB) inhibitor. Finally, according to some experimental results, a plausible mechanism for the cyanation reaction is proposed. (Figure presented.).
