Influence of Crowdsourcing Innovation Community Reference on Creative Territory Behavior.

Crowdsourcing innovation community has become an important platform for enterprises to gather group wisdom. However, how the crowdsourcing innovation community plays a reference role in creative crowdsourcing participation is unclear. Based on the reference group theory, taking online impression management as the explanatory framework, this study explores the impact of crowdsourcing innovation community reference on the creative territory behavior, and the differences in the crowdsourcing innovation community reference effect among members of different community age groups. A total 524 valid two-stage questionnaires were collected. The empirical analysis results show that under the influence of informational reference and utilitarian reference of the crowdsourcing innovation community, community members are significantly more likely to adopt acquired impression management (AIM) than defensive impression management (DIM); under the influence of value expressive reference of the crowdsourcing innovation community, the possibility of adopting DIM behavior is significantly greater than that of adopting AIM behavior; compared with DIM behavior, AIM behavior has a more inhibitory effect on creative territory behavior. Interestingly, there are different community reference effects among members of different community age groups. In particular, the positive contribution of the elder members is not as good as that of the newcomers. The above research conclusions not only confirm the influence of crowdsourcing community reference on crowd participation decision making but also provide theoretical and practical enlightenment for exploring the cooperation mechanism of crowdsourcing innovation.

[Synthesis, spectral analysis and photocatalysis of Ag/K4Nb6,O17 heterojunction catalysts].

K4Nb6O17 photocatalyst was successfully synthesized by low-temperature hydrothermal method with layer structure. Considering that a large number of hydroxyl (Nb-OH) and oxygen species (Nb==O, Nb--O-) exist on the surface of K4Nb6O17 synthesized by hydrothermal method, Ag(en)2+ precursors were employed to synthesize Ag/K4Nb6O17 heterostructure photo-catalysts with highly dispersed Ag. Photocatalytic performance evaluation results show that the photodegradation rate of MO for K4Nb6O17 was remarkably improved when a small amont of Ag was loaded. The best loading dose of Ag is 0.5 at%. Based on various characterizations results of XRD, FTIR, UV-Vis DRS, XRF and TEM, the photocatalytic mechanism of Ag/ K4Nb6O17 heterostructure catalysts was illuminated in detail and the conclusions were drawn as follows: (1) K4Nb6O17 nanocrystals serve as electron and hole sources for degradation of an organic dye; (2) Ag nanoparticles on the surface of K4Nb6O17 nanocrystals act as a sink for the electrons, promote interfacial charge-transfer kinetics between the metal and semiconductor, improve the separation of photogenerated electron-hole pairs, and thus enhance the photocatalytic activity of Ag/K4Nb6O17 photocatalyst.

[Syntheses and spectral study of novel metal zinc organic phosphonate].

Two novel Zn2+ organic phosphonate Zn(4,4'-bipy)(HBCP) 1 and [Zn2 (phen)2 (BCP)(H2 BCP)].H2O2 were hydrothermally synthesized. The compound 1 is with two-dimensional layer framework whereas the compound 2 is zero-dimensional structure. The Zn2+ ion is four-coordinated in compound 1 while five or six-coordinated in compound 2. The relationship between their properties and structures was studied by using FTIR, two-dimensional (2D) correlation infrared spectroscopy under thermal perturbation, fluorescence and UV-Vis DRS spectrum etc. Upon light excitation at 350 nm, the compound 1 exhibits luminescence with a strong wide emission at 412 nm and a weak emission at 520 nm, while the compound 2 exhibits luminescence with a wide emission only at 398 nm under light excitation at 336 nm.

[2D correlation spectral study of a coordination polymer [Eu(PCPOA)3 (H2O)]n].

A novel two dimensional coordination polymer [Eu(PCPOA)3 (H2O)], was synthesized under hydrothermal condition. Based on the determination of the structure, the 2D correlation FTIR spectra with the perturbation of magnetism and the 2D correlation fluorescence spectra with the perturbation of temperature were investigated. The energy bonds were calculated using CASTEP Program of Material studio. The Europium ions are nine-coordinated and the ligands adopted two different modes to connect the Eu3+ ions to 2D layer structure. The study of the 2D-FTIR reveals that the carboxylates coordinate with the center ions not only as monodentate, but also as bidentate chelate. The 2D fluorescence spectra indicates that the transition of (5)D0-->(7)F2 is influenced intensively by the perturbation of temperature.

[Spectral study of some polyoxovanadium borates].

Four novel polyoxovanadium borates with [(VO)12O6B18O42], namely (enH2)6 H3 [(VO)12O6B18O42].13H2O(1), [Ni (en)2]6 H3 [(VO)12 O6B18O42].8H2O(2), [Cu(en)2]5 H3 [(VO)12 O6B18 O42] [B(OH)3]2. 16H20(3) and(enH2)4 Na4H3 [(VO)12 O6B18O42].8H2O(4), were synthesized. The relationship between their properties and structures were studied by using FTIR, UV-Vis DRS and fluorescence etc. Among these compounds, compound (1) possesses isolated [(VO)12O6B18O42] cage, there is a ring of B18O42 sandwiched between two vanadium-oxygen clusters V6O18 by eighteen B--(micro3--O)--V bonds, while compound (2) is rather six [Ni(en)2], each connected with the B18O42 ring by two Ni--(micro3--O)--B. In compounds (3) and (4), the anion clusters [(VO)12 O6B18O42]13- are connected with [Cu(en)2]2+ and Na+ , respectively. Thus, the compounds (3) and (4) are extended to an infinite two-dimensional network structure, respectively. These characteristic vibrational frequencies of polyoxovanadium borates are related to the structures of these compounds. In UV/Vis DRS spectra, there are two characteristic peaks of polyoxometalates at 205 and 260 nm, respectively. The fluorescence spectra of these four compounds have been studied, and they have emission peaks at 415 nm excited by 310 nm which are caused by Omicro-->Mo. The fluorescence lifetimes of these compounds have been studied.