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M4Mg4(P2O7)(3) (M = K, Rb): Structural Engineering of Pyrophosphates for Nonlinear Optical Applications
Yu, HW (Yu, Hongwei); Young, J (Young, Joshua); Wu, HP (Wu, Hongping); Zhang, WG (Zhang, Weiguo); Rondinelli, JM (Rondinelli, James M.); Halasyamani, PS (Halasyamani, P. Shiv)
2017
Source PublicationCHEMISTRY OF MATERIALS
ISSN0897-4756
Volume29Issue:4Pages:1845-1855
Abstract

On the basis of their short ultraviolet (UV) absorption edges, phosphates are ideal candidates for deep-UV nonlinear optical (NLO) applications. However, their often-weak second-harmonic generating (SHG) responses reduce their NLO applications. It has been demonstrated that the SHG response in polyphosphates or orthophosphates could be enhanced by highly polymerized P-O groups or aligned nonbonding O-2p orbitals of isolated PO4 units. Herein, we report on the design and synthesis of two pyrophosphates, K4Mg4(P2O7)(3) and Rb4Mg4(P2O7)(3), with potential NLO applications. Both materials exhibit relatively large SHG responses with 1064 nm radiation, 1.3X and 1.4X KH2PO4 (KDP) for K4Mg4(P2O7)(3) and Rb4Mg4(P2O7)(3), respectively. In addition, absorption edges below 200 nm were observed for both materials. For K4Mg4(P2O7)(3), single crystal vacuum-UV transmission measurements revealed an absorption edge of 170 nm. First-principles electronic structure calculations identify that the NLO responses arise from the presence of the corner-connected [Mg4P6O21] double layers. We also investigated these compounds using hybrid density functionals, which are found to produce much better agreement with the experimental optical results. Finally, we detail the structural distortions giving rise to the NLO responses. Our results indicate that phosphates with low polymerized P-O groups, such as pyrophosphates, may exhibit large SHG responses if their structures are properly designed.

DOI10.1021/acs.chemmater.7b00167
Indexed BySCI
WOS IDWOS:000395358600044
Citation statistics
Cited Times:32[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/4746
Collection材料物理与化学研究室
Affiliation1.Univ Houston, Dept Chem, 112 Fleming Bldg, Houston, TX 77204 USA
2.Northwestern Univ, Dept Mat Sci & Engn, 2220 Campus Dr, Evanston, IL 60208 USA
3.Chinese Acad Sci, Xinjiang Tech Inst Phys Chem, 40-1 Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China
4.Naval Res Labs, 4555 Overlook Ave SW, Washington, DC 20375 USA
Recommended Citation
GB/T 7714
Yu, HW ,Young, J ,Wu, HP ,et al. M4Mg4(P2O7)(3) (M = K, Rb): Structural Engineering of Pyrophosphates for Nonlinear Optical Applications[J]. CHEMISTRY OF MATERIALS,2017,29(4):1845-1855.
APA Yu, HW ,Young, J ,Wu, HP ,Zhang, WG ,Rondinelli, JM ,&Halasyamani, PS .(2017).M4Mg4(P2O7)(3) (M = K, Rb): Structural Engineering of Pyrophosphates for Nonlinear Optical Applications.CHEMISTRY OF MATERIALS,29(4),1845-1855.
MLA Yu, HW ,et al."M4Mg4(P2O7)(3) (M = K, Rb): Structural Engineering of Pyrophosphates for Nonlinear Optical Applications".CHEMISTRY OF MATERIALS 29.4(2017):1845-1855.
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