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The effects of crystal structure on optical absorption/photoluminescence of bis(8-hydroxyquinoline)zinc |
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| Authors: | Xu Bing-she Wang Hua Liu Xu-guang |
| Affiliation: | a College of Materials Science and Engineering, Taiyuan University of Technology, No. 79 Yingze Street, Taiyuan, Shanxi 030024, China b College of Science, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China c College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, China d Institute for Materials Research, Tohoku University, Sendai 9808577, Japan |
| Abstract: | In this paper, the transformation processes of two types of bis(8-hydroxyquinoline)zinc: Znq2 dihydrate and anhydrous (Znq2)4 were investigated by X-ray diffraction (XRD), infrared spectra (IR), scanning electron microscope (SEM), differential scanning calorimetry (DSC) and thermogravimetry (TG). The effects of crystal structure on optical properties of bis(8-hydroxyquinoiline)zinc were analyzed. Znq2 dihydrate can be transformed into anhydrous (Znq2)4 during heating under vacuum. Reversal transformation occurs by the interaction between chloroform and (Znq2)4. But (Znq2)4 was partially transformed into Znq2 dihydrate by the interaction between ethanol and (Znq2)4. The different molecular structure results in different crystal stacking and electronic structure, thereby affect its optical properties. |
| Keywords: | 61.12.LD 71.35.Cc 78.55.&minus m |
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