Time filter

Source Type

Hong B.,Fujian Normal University | Hong B.,Command Academy of Fuzhou | Yang F.,Fujian Normal University | Yang F.,Fujian Key Laboratory of Polymer Materials | And 2 more authors.
Tetrahedron Letters | Year: 2014

The novel calixarene-linked discotic triphenylene 5a and 5b were synthesized in good yields via click chemistry. Structural and conformational characterization of new compounds had been achieved by NMR, MS, and elemental analysis. Their liquid crystalline behaviors before and after complexation were studied by polarizing optical microscopy, differential scanning calorimetry, and X-ray diffraction. The neat compounds 5a and 5b showed mesophase but the complexes of 5a and 5b with metallic salts exhibited no liquid crystal behaviors. © 2013 Elsevier Ltd. All rights reserved.


Hong B.,Fujian Normal University | Hong B.,Command Academy of Fuzhou | Yang F.,Fujian Normal University | Yang F.,Fujian Key Laboratory of Polymer Materials | And 3 more authors.
Letters in Organic Chemistry | Year: 2014

Using benzo-15-crown-5 derivatives as starting materials, two novel benzo-15-crown-5/C60 dyads with different linking chains were designed and synthesized in good yields by 1,3-dipolar cycloaddition of azomethine ylide generated in situ from aldehyde and sarcosine tied to C 60. It was found that their UV-Vis absorption spectra could be regulated hypsochromically by metal ions complexation. The long and soft linking chain was favorable for cooperate interaction of crown ether unit and C 60 unit. © 2014 Bentham Science Publishers.


Hong B.,Fujian Normal University | Hong B.,Command Academy of Fuzhou | Yang F.,Fujian Normal University | Yang F.,Fujian Key Laboratory of Polymer Materials | And 2 more authors.
Journal of Macromolecular Science, Part A: Pure and Applied Chemistry | Year: 2012

By formylation of 1,3-bisubstituted calix[4]arene anthraquinone derivative 1 in hexamethylenetetramine/trifluoroacetic acid system, the corresponding formylated gecalix[4]arene anthraquinone derivative 2 was synthesized in yield of 63%. By further reacting compound 2 with salicylic hydrazide, 2,4-dinitrophenyl hydrazine, nicotinyl hydrazine or phenyl thiosemicarhazide, novel calix[4]arene derivatives with anthraquinone and hydrazone groups 3a-3d were obtained in yields of 74-83%. The extracting experiments for series of metallic cations showed that compounds 3a-3d possessed high extracting abilities and extracting selectivity for tested cations. The complexation UV-Vis spectra for a series of anions indicated compounds 3a-3d exhibited the strong complexation abilities for tested anions. The 1H-NMR titration study showed that compound 3d possessed excellent complexation abilities for ion-pair of NaH 2PO 4 in 1:1 host-guest complex with the association constant of 4.6 × 10 4 M 1. © 2012 Copyright Taylor and Francis Group, LLC.


Hu J.-M.,Command Academy of Fuzhou | Hu J.-M.,Fuzhou University | Wang D.-C.,Chinese People's Armed Police forces Academy | Zhao Y.-G.,Command Academy of Fuzhou | And 2 more authors.
Jiegou Huaxue | Year: 2014

Density functional theory calculations have been performed to study the interaction of small silver clusters, Ag2~Ag9, with HCN. The adsorption of HCN on-top site of the silver cluster, among various possible sites, is energetically preferred. The adsorption energies of HCN on the silver clusters reach a local maximum at n = 4, which is only about 0.450 eV, indicating that the adsorbed HCN molecule is weakly perturbed. The adsorbed C-N and C-H stretching frequencies are blue- and red-shifted compared with the values of free HCN, respectively.


Ni B.-L.,Fujian Medical University | Ni B.-L.,Fuzhou University | Hu J.-M.,Fuzhou University | Hu J.-M.,Command Academy of Fuzhou | And 2 more authors.
Jiegou Huaxue | Year: 2015

The adsorptions of a series of alkali metal (AM) atoms, Li, Na, K, Rb and Cs, on a Si(001)-2×2 surface at 0.25 monolayer coverage have been investigated systematically by means of density functional theory calculations. The effects of the size of AM atoms on the Si(001) surface are focused in the present work by examining the most stable adsorption site, diffusion path, band structure, charge transfer, and the change of work function for different adsorbates. Our results suggest that, when the interactions among AM atoms are neglectable, these AM atoms can be divided into three classes. For Li and Na atoms, they show unique site preferences, and correspond to the strongest and weakest AM-Si interactions, respectively. In particular, the band structure calculation indicates that the nature of Li-Si interaction differs significantly from others. For the adsorptions of other AM atoms with larger size (namely, K, Rb and Cs), the similarities in the atomic and electronic structures are observed, implying that the atom size has little influence on the adsorption behavior for these large AM atoms on the Si(001) surface.

Loading Command Academy of Fuzhou collaborators
Loading Command Academy of Fuzhou collaborators