Next Article in Journal
Characterization of Coals and Coal Ashes with High Si Content Using Combined Second-Derivative Infrared Spectroscopy and Raman Spectroscopy
Previous Article in Journal
Synthesis of Manganese Mononitride with Tetragonal Structure under Pressure
Open AccessArticle

Structure, Optical, and Thermal Properties of 9, 10-Diphenylanthracene Crystals

Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 919-215 Mail Box, Mianyang, Sichuan 621999, China
*
Author to whom correspondence should be addressed.
Crystals 2019, 9(10), 512; https://doi.org/10.3390/cryst9100512
Received: 28 July 2019 / Revised: 25 September 2019 / Accepted: 27 September 2019 / Published: 1 October 2019
9,10-diphenylanthracene (DPA) single crystal is a promising scintillator material for fast-neutron detection. Two centimetre-sized polymorph crystals of DPA were grown by melting and solution methods (DPA-Melt and DPA-Solution, respectively), and characterised by single-crystal X-ray diffraction, Raman spectroscopy, Fourier-transform infrared spectroscopy, fluorescence spectroscopy, UV-Vis absorbance spectroscopy, and thermogravimetric/differential scanning calorimetry. The DPA-Melt crystal possessed a P21/n structure, with excitation bands at approximately 331, 348, 367, and 387 nm, and the strongest emission wavelength at approximately 454 nm. On the other hand, the DPA-Solution crystal possessed a C2/c structure, with excitation bands at approximately 335, 353, 372, and 396 nm, and the strongest emission wavelength at approximately 468 nm. The two kinds of DPA crystals have the same molecular formula but different crystal structures, crystal lattice constants, and cell parameters. The theoretical density of the DPA-Solution crystal was 1.239 g/cm3, while that of the DPA-Melt crystal was 1.211 g/cm3. The two types of crystals exhibited the same melting point, but the thermal stability of the DPA-Solution crystal is better than that of the DPA-Melt crystal. View Full-Text
Keywords: diphenylanthracene; polymorph; crystal structure; scintillator; neutron detection diphenylanthracene; polymorph; crystal structure; scintillator; neutron detection
Show Figures

Figure 1

MDPI and ACS Style

Liu, X.; Zhu, T.; Hu, Q.; Dong, L.; Tan, Z. Structure, Optical, and Thermal Properties of 9, 10-Diphenylanthracene Crystals. Crystals 2019, 9, 512.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop