TY - JOUR
T1 - Heterometallic Hybrid Open Frameworks
T2 - Synthesis and Application for Selective Detection of Nitro Explosives
AU - Wang, Kangcai
AU - Tian, Xin
AU - Jin, Yunhe
AU - Sun, Jie
AU - Zhang, Qinghua
N1 - Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/4/5
Y1 - 2017/4/5
N2 - Three inorganic-organic hybrid open frameworks based on heterometallic cluster building blocks, formulated as Cd2Cs3(NDC)3(OAc)(DMA)2(H2O) (1), [NH2(CH3)2]2·Cd2Mg(NDC)4·Gx (2), and [NH2(CH3)2]3·Cd2K(NDC)4·Gx (3) (H2NDC = 2,6-naphthalenedicarboxylic acid, G = guest solvent molecule), were synthesized under solvothermal conditions. Compound 1 has a pillared layered structure featuring inorganic hcb-type layers with 14-ring windows and simultaneously exhibits a 3D open framework constructed from two types of heterometallic clusters, i.e., {Cd2Cs2O18} and {CdCs4O18}, and the NDC2- ligand. Compounds 2 and 3 are constructed from linear trinuclear {Cd2M} (M = Mg and K) building blocks and the NDC2- ligand, featuring 1D square channels with rld-z topology. Of the three heterometallic hybrid open frameworks, compounds 1 and 2 exhibited strong blue-light emission due to the presence of fluorescent organic ligands in the anionic frameworks, and more importantly, their strong fluorescence could be selectively quenched toward the nitro explosive picric acid (PA). Mechanism study has demonstrated that the high fluorescence quenching selectivity of both hybrid materials toward PA might be due to resonance energy transfer and photoinduced electron transfer processes.
AB - Three inorganic-organic hybrid open frameworks based on heterometallic cluster building blocks, formulated as Cd2Cs3(NDC)3(OAc)(DMA)2(H2O) (1), [NH2(CH3)2]2·Cd2Mg(NDC)4·Gx (2), and [NH2(CH3)2]3·Cd2K(NDC)4·Gx (3) (H2NDC = 2,6-naphthalenedicarboxylic acid, G = guest solvent molecule), were synthesized under solvothermal conditions. Compound 1 has a pillared layered structure featuring inorganic hcb-type layers with 14-ring windows and simultaneously exhibits a 3D open framework constructed from two types of heterometallic clusters, i.e., {Cd2Cs2O18} and {CdCs4O18}, and the NDC2- ligand. Compounds 2 and 3 are constructed from linear trinuclear {Cd2M} (M = Mg and K) building blocks and the NDC2- ligand, featuring 1D square channels with rld-z topology. Of the three heterometallic hybrid open frameworks, compounds 1 and 2 exhibited strong blue-light emission due to the presence of fluorescent organic ligands in the anionic frameworks, and more importantly, their strong fluorescence could be selectively quenched toward the nitro explosive picric acid (PA). Mechanism study has demonstrated that the high fluorescence quenching selectivity of both hybrid materials toward PA might be due to resonance energy transfer and photoinduced electron transfer processes.
UR - http://www.scopus.com/inward/record.url?scp=85017118529&partnerID=8YFLogxK
U2 - 10.1021/acs.cgd.6b01808
DO - 10.1021/acs.cgd.6b01808
M3 - 文章
AN - SCOPUS:85017118529
SN - 1528-7483
VL - 17
SP - 1836
EP - 1842
JO - Crystal Growth and Design
JF - Crystal Growth and Design
IS - 4
ER -