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New Journal of Chemistry
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DOI: 10.1039/C9NJ05175A
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Received 00th January
20xx,
Lanthanide-Organic Crystalline Framework Material Encapsulated
by 1,3,6,8-tetrakis (p-benzoic acid) pyrene: Selective Sensing on
2-
Fe3+, Cr2O7 and Colchicine and White-light Emission
Jin Xiao Li,a Qing Lin Guan,a Yu Wang,a Zi Xin You,a Yong Heng Xing,*a Feng Ying Bai,*a Li Xian Sunb
Accepted 00th January 20xx
DOI: 10.1039/x0xx00000x
A facile strategy was used to construct a series of composite materials with color-tunable and white light emitting by
encapsulating 1,3,6,8-tetrakis (p-benzoic acid) pyrene (H4TBAPy) into framework material [Eu(MCTCA)1.5(H2O)2]•1.75H2O
(Eu-MCTCA), which is synthesized based on Eu(NO3)3•6H2O and 5-methyl-1-(4-carboxylphenyl)-1H-1,2,3-triazole-4-
carboxylic acid (H2MCTCA). A slight adjustment of the emitted color can be easily fulfilled by simply altering the
concentration of H4TBAPy or regulating the excitation wavelength. Notably, the white light emitting Eu-MCTCA@H4TBAPy
can be realized by encapsulating H4TBAPy with a concentration of 0.75 mM, when the excitation wavelength is 350 nm.
Furthermore, based on the favorable luminescence and stable structure of Eu-MCTCA@H4TBAPy in water or organic
2-
solvents, the Eu-MCTCA@H4TBAPy can be used as a potential luminescent probe for detecting of Fe3+, Cr2O7 and
colchicine.
it is advantageous for storing and transporting oxygen, controlling
muscle and brain functions, maintaining the balance of the
Introduction
Nitrogen-heterocyclic ligands have attracted extensive attention
from researchers since the study of metal-organic coordination
polymers, and the reason is that nitrogen-heterocyclic ligands
show favorable coordination ability and varied coordination
modes, which can form diverse coordination polymers with novel
structures[1,2]. There are many kinds of heterocyclic ligands with
rich configurations, the most common nitrogen-containing
immune system and the enzyme system etc.[23]. However, the lack
or overload of Fe3+ ions can also cause various diseases, such as
skin disorders, insomnia, anemia, liver damage, heart failure and
2−
Parkinson's disease[24]. While Cr2O7 as an important oxidant in
industry, it is extensive used in industry not only causes serious
environmental degradation, but also endangers human health. It
can cause skin ulcers, which in severe cases can lead to lung and
heterocyclic azoles are triazole, tetrazole and their derivatives[3-6]
.
gastrointestinal cancer[25-28]
.
Therefore, selective and accurate
2-
Metal-organic frameworks (MOFs) are an emerging class of
materials consisting of metal nodes/clusters and organic linkers[7].
Among them, MOFs are formed by connecting triazole or tetrazole
to metal ions, especially rare earth ions, showing various
structures and excellent physical and chemical properties[8]. Due
to the organic ligands with nitrogen heterocycles have goodish
sensitization to rare earth ions, unique electronic structures and
luminescent properties[9], rare earth coordination frameworks
constructed from nitrogen heterocyclic ligands usually have
monitoring of Fe3+ or Cr2O7 ions is of great significance. On the
other hand, colchicine is a kind of natural alkaloid occurring in
colchicum which can be used to treat gout and arthrophlogosis,
but it is also very toxic to human beings[29,30]. As far as we know,
there are many methods to detect colchicine. However, there are
few reports to detection colchicine using MOFs as sensors.
Pyrene is a part of polycyclic aromatic hydrocarbons family and
has the dual roles of electron donating and electron
withdrawing[31,32]. Since Laurent discovered pyrene in the residue
of coal tar destructive distillation in 1837, this polycyclic aromatic
excellent properties[10]
.
At the same time, these rare earth
coordination frameworks have many advantages with simple
synthesis methods, designable structures and light-emitting
diversity. All above make them widely used as functional
materials in many fields, for instance, magnetic resonance
imaging[11], optical devices[12], biomedical medicine[13-15], light
control[16], magnetic[17, 18], gas absorption[19] and fluorescent
sensors[20-22], which become a research hotspot in recent years.
hydrocarbon has been the subject of extensive research[33]
.
Among many organic ligands, pyrene and its derivatives have
many advantages such as high thermal stability, photochemical
stability, pure blue fluorescence, plane geometry and natural high
charge mobility[34-36]. They have attracted attention because they
can be widely applied in Organic Light Emitting Display(OLEDs)[37-
40], organic photovoltaic(OPVs)[41], organic electronic devices,
nanomaterials[42,43] and chemical sensing[44]. At present, there are
two main research directions for pyrene. One is to modify the
active site of pyrene, such as Yamato et al. indicated that a -CHO
group could selectively attach to 4- or 4,9- position of the pyrene
under the different catalytic conditions of Lewis acid[45]. Charka et
al. synthesized a novel pyrene emitting material for OLED devices
by adding N-styrene-carbazole-branched chain units at positions 2
and 7[46]. The other line of research is to coordinate pyrene with
metal ions. For instance, Li et al. synthesized three novel
structures of MOFs by changing reaction conditions based on four
dominant bodies (1,3,6,8-tetrakis (p-benzoic acid) pyrene) as the
2−
Fe3+ and Cr2O7 ions are two well-known important ions, in
which Fe3+ ions play a crucial role in most organisms. For example,
College of Chemistry and Chemical Engineering, Liaoning Normal University,
Huanghe Road 850#, Dalian 116029, P.R. China.
Guangxi Key Laboratory of Information Materials, Guilin University of Electronic
Technology, Guilin City, 541004, P.R. China
* Corresponding author. E-mail address: xingyongheng2000@163.com (Y. H. Xing);
baifengying2003@163.com (F. Y. Bai)
†Electronic
Supplementary
Information
(ESI)
available.
See
DOI:10.1039/x0xx00000x
This journal is © The Royal Society of Chemistry 20xx
J. Name., 2013, 00, 1-3 | 1
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