(NH)[HPOF]：最大化深紫外氟磷酸盐的光学各向异性
(NH)[HPOF]: maximizing the optical anisotropy of deep-ultraviolet fluorophosphates.
作者信息
Qiu Haotian, Li Fuming, Jin Congcong, Lu Juanjuan, Yang Zhihua, Pan Shilie, Mutailipu Miriding
机构信息
CAS Key Laboratory of Functional Materials and Devices for Special Environments, Xinjiang Technical Institute of Physics & Chemistry, CAS, and Xinjiang Key Laboratory of Electronic Information Materials and Devices, 40-1 South Beijing Road, Urumqi 830011, China.
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
出版信息
Chem Commun (Camb). 2022 May 5;58(37):5594-5597. doi: 10.1039/d2cc01035f.
Although phosphates are a rich source of deep-ultraviolet optical materials, the realization of large optical anisotropy in them still remains a challenge because of the small polarizability anisotropy of [PO] units. Inspired by the fluoridation strategy and hydrogen bond interaction, a new metal-free monofluorophosphate, (NH)[HPOF], was synthesized, which exhibits a large birefringence (cal. 0.077) and wide band gap (∼6.51 eV). Such a large birefringence in (NH)[HPOF] sets a new record among available fluorophosphates, and the [HPOF] unit is theoretically confirmed to be a new birefringence-active unit.
尽管磷酸盐是深紫外光学材料的丰富来源，但由于[PO]单元的极化率各向异性较小，在其中实现大的光学各向异性仍然是一个挑战。受氟化策略和氢键相互作用的启发，合成了一种新型无金属单氟磷酸盐(NH)[HPOF]，它具有大的双折射（计算值为0.077）和宽带隙（约6.51 eV）。(NH)[HPOF]中如此大的双折射在现有氟磷酸盐中创下了新纪录，并且[HPOF]单元在理论上被证实是一种新的双折射活性单元。
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