Hydrothermal syntheses, structures and photophysical properties of two lanthanide isonicotinic acid complexes.

Authors :: Luo, Qiu-Yan
Liu, Hao-Dong
Shao, Xi-Yu
Xu, Yu-Yue
Liu, Cheng
Dai, Sheng-Ping
Pan, Chang-Wang
Chen, Wen-Tong
Source :: Molecular Crystals & Liquid Crystals; 2024, Vol. 768 Issue 18, p1266-1280, 15p
Publication Year :: 2024
Abstract: Two rare earth isonicotinic acid compounds [Y(HIA)<subscript>2</subscript>(H<subscript>2</subscript>O)<subscript>4</subscript>(NO<subscript>3</subscript>)](2NO<subscript>3</subscript>) ((1); HIA = isonicotinic acid) and [LaHg<subscript>3</subscript>Cl<subscript>8</subscript>(HIA)<subscript>4</subscript>]<subscript>n</subscript>nCl (2) were reported. Compound one features an isolated (0-D) structure, while compound two has a two-dimensional (2-D) structure. The rare earth ions are coordinated by eight oxygen atoms to display a square antiprismatic REO<subscript>8</subscript> geometry. Compound one shows blue photoluminescence and it has CIE chromaticity coordinates of 0.2332 and 0.3104. The CCT of compound 1 is 13755 K. Compound two exhibits green photoluminescence and it has CIE chromaticity coordinates of 0.3663 and 0.6184. The CCT is 4997 K. Their band gaps are 2.86 and 3.12 eV. [ABSTRACT FROM AUTHOR]

Subjects :: BAND gaps
RARE earth ions
ISONICOTINIC acid
HYDROTHERMAL synthesis
CHROMATICITY

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