Multifunctional uranyl hybrid materials: structural diversities as a function of pH, luminescence with potential nitrobenzene sensing, and photoelectric behavior as p-type semiconductors.
A series of uranyl-organic frameworks (UOFs), {[(UO2)2(H2TTHA)(H2O)]·4,4'-bipy·2H2O}n (1), {[(UO2)3(TTHA)(H2O)3]}n (2), and {[(UO2)5(TTHA) (HTTHA)(H2O)3]·H3O}n (3), have been obtained by the hydrothermal reaction of uranyl acetate with a flexible hexapodal ligand (1,3,5-triazine-2,4,6-triamine hexaacetic acid, H6TTHA). These compounds exhibited three distinct 3D self-assembly architectures as a function of pH by single-crystal structural analysis, although the used ligand was the same in each reaction. Surprisingly, all of the coordination modes of the H6TTHA ligand in this work are first discovered. Furthermore, the photoluminescent results showed that these compounds displayed high-sensitivity luminescent sensing functions for nitrobenzene. Additionally, the surface photovoltage spectroscopy and electric-field-induced surface photovoltage spectroscopy showed that compounds 1-3 could behave as p-type semiconductors.
Jian
J
Song
Xue
X
Gao
Zhi-Nan
ZN
Wang
Cheng-Ren
CR
Li
Qi
Q
Xu
Feng-Ying
FY
Bai
College of Chemistry and Chemical Engineering, Qinzhou University , Qinzhou 535099, P.R. China.
Zhong-Feng
ZF
Shi
Yong-Heng
YH
Xing
D000085:Acetates / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008024:Ligands; D049449:Luminescence; D008968:Molecular Conformation; D009578:Nitrobenzenes / Q000032:analysis; D012666:Semiconductors; D014227:Triazines / Q000737:chemistry*; D014501:Uranium / Q000737:chemistry*
C000607934:1,3,5-triazine-2,4,6-triamine hexaacetic acid; D000085:Acetates; D056831:Coordination Complexes; D008024:Ligands; D009578:Nitrobenzenes; D014227:Triazines; D014501:Uranium; C036077:nitrobenzene