Publications [#235035] of Weitao Yang

Journal Articles
  1. Wang, W; Qiao, J; Wang, L; Duan, L; Zhang, D; Yang, W; Qiu, Y, Synthesis, structures, and optical properties of cadmium iodide/phenethylamine hybrid materials with controlled structures and emissions, Inorganic Chemistry, vol. 46 no. 24 (2007), pp. 10252-10260 [doi] .

    Abstract:
    A new type of organic-inorganic hybrid materials based on cadmium iodide (CdI2) and phenethylamine (PEA) has been synthesized and characterized. The reaction of CdI2 with PEA in a 1:2 molar ratio yields a four-coordinate hybrid material CdI2(PEA)2 (1) with extended 1D (CdI2)n chains, while the reaction of CdI2 with PEA in a 1:4 molar ratio produces a six-coordinate hybrid material CdI2(PEA)4 (2) with a discrete linear structure of CdI2 moiety. By introducing a trace amount of Na2S to the reaction for CdI2(PEA)2, we obtained a new compound [CdI2(PEA)2]-(CdS)0.038 (3) with uniformly doped CdS nanoparticles. Steady and transient photoluminescence studies reveal that compounds 1 and 2 exhibit bright blue (465 nm) and green (512 nm) fluorescent emissions in solid state at room temperature, respectively, while compound 3 gives a broad and complex emission ranging from 450 to 700 nm. Theoretical studies of electronic structures were carried out using density functional theory in order to gain a good understanding of the luminescent behaviors of these hybrid materials. © 2007 American Chemical Society.