高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (12): 2725.doi: 10.7503/cjcu20200364
咸国轩, 于玉娥, 陈玉倩, 万小雨, 王素娜(), 卢静(
)
收稿日期:
2020-06-18
出版日期:
2020-12-10
发布日期:
2020-12-09
通讯作者:
王素娜,卢静
E-mail:wangsuna@lcu.edu.cn;lujing@lcu.edu.cn
基金资助:
XIAN Guoxuan, YU Yu’e, CHEN Yuqian, WAN Xiaoyu, WANG Suna(), LU Jing(
)
Received:
2020-06-18
Online:
2020-12-10
Published:
2020-12-09
Contact:
WANG Suna,LU Jing
E-mail:wangsuna@lcu.edu.cn;lujing@lcu.edu.cn
Supported by:
摘要:
将柔性苄氨基三羧酸配体5-(3-羧基-4-甲氧基苄氨基)间苯二甲酸(H3L)与硝酸镉和不同含氮配体在溶剂热条件下反应, 制得了配合物{[Cd(HL)(bpea)·H2O]·H2O·DMF}n(1)、 {[Cd(HL)(bpp)·H2O]·2H2O·DMF}n(2)和 {[Cd(HL)(dmbpy)]·DMF}n(3)[bpea=bis(4-pyridyl)ethane; bpp=1,3-bis(4-pyridyl)propane; dmbpy=5,5′-dimethyl-2,2′-bipyridine]. 3个配合物分别表现出有趣的2D→2D穿插结构和一维带状结构. 荧光性质测试结果表明, 所有配合物的荧光均可被Cr2O72?猝灭, 而在乙酰丙酮的DMF溶液中, 只有配合物1表现出明显的荧光增强. 羧酸配体的柔性、 含氮配体的类型和结构可以调控配合物的结构和荧光性能.
中图分类号:
TrendMD:
咸国轩, 于玉娥, 陈玉倩, 万小雨, 王素娜, 卢静. 辅助配体调控的荧光Cd-MOFs: 乙酰丙酮的荧光增强和Cr(Ⅵ)的荧光猝灭. 高等学校化学学报, 2020, 41(12): 2725.
XIAN Guoxuan, YU Yu’e, CHEN Yuqian, WAN Xiaoyu, WANG Suna, LU Jing. Coligand Induced Luminescent Cd-MOFs: Luminescence Enhancement Toward Acetylacetone and Quenching Toward Cr2O72-. Chem. J. Chinese Universities, 2020, 41(12): 2725.
Compd. | 1 | 2 | 3 |
---|---|---|---|
CCDC No. | 2003735 | 2003736 | 2003737 |
Formula | C32H36N4O10Cd | C33H40N4O11Cd | C32H32N4O8Cd |
Formula weight | 749.05 | 781.09 | 713.03 |
T/K | 298 | 298 | 298 |
Crystal system | Triclinic | Triclinic | Monoclinic |
Space group | C2/c | ||
a/nm | 1.02640(8) | 1.02059(10) | 3.5513(3) |
b/nm | 1.07661(9) | 1.24810(12) | 0.87420(8) |
c/nm | 1.58609(12) | 1.51020(15) | 1.96671(17) |
α/(°) | 108.934(3) | 65.763(1) | 90 |
β/(°) | 99.127(2) | 82.945(3) | 94.036(2) |
γ/(°) | 93.770(1) | 77.905(2) | 90 |
V/nm3 | 1.6239(2) | 1.7137(3) | 6.0906(9) |
Z | 2 | 2 | 8 |
Dc/(g·cm-3) | 1.532 | 1.514 | 1.555 |
μ/mm-1 | 0.736 | 5.664 | 0.776 |
θ range/(°) | 2.7—25.0 | 3.2—66.0 | 2.3—25.0 |
Index range | -12≤h≤11, -8≤k≤12, -18≤l≤13 | -12≤h≤12, -14≤k≤9, -17≤l≤16 | -42≤h≤40, -8≤k≤10, -23≤l≤22 |
R1, wR2 [I> 2σ(I)] | 0.0552, 0.1433 | 0.0612, 0.1192 | 0.0458, 0.1064 |
Goodness?of?fit on F2 | 0.990 | 0.976 | 1.006 |
Table 1 Crystallographic data and structure refinement parameters for complexes 1—3
Compd. | 1 | 2 | 3 |
---|---|---|---|
CCDC No. | 2003735 | 2003736 | 2003737 |
Formula | C32H36N4O10Cd | C33H40N4O11Cd | C32H32N4O8Cd |
Formula weight | 749.05 | 781.09 | 713.03 |
T/K | 298 | 298 | 298 |
Crystal system | Triclinic | Triclinic | Monoclinic |
Space group | C2/c | ||
a/nm | 1.02640(8) | 1.02059(10) | 3.5513(3) |
b/nm | 1.07661(9) | 1.24810(12) | 0.87420(8) |
c/nm | 1.58609(12) | 1.51020(15) | 1.96671(17) |
α/(°) | 108.934(3) | 65.763(1) | 90 |
β/(°) | 99.127(2) | 82.945(3) | 94.036(2) |
γ/(°) | 93.770(1) | 77.905(2) | 90 |
V/nm3 | 1.6239(2) | 1.7137(3) | 6.0906(9) |
Z | 2 | 2 | 8 |
Dc/(g·cm-3) | 1.532 | 1.514 | 1.555 |
μ/mm-1 | 0.736 | 5.664 | 0.776 |
θ range/(°) | 2.7—25.0 | 3.2—66.0 | 2.3—25.0 |
Index range | -12≤h≤11, -8≤k≤12, -18≤l≤13 | -12≤h≤12, -14≤k≤9, -17≤l≤16 | -42≤h≤40, -8≤k≤10, -23≤l≤22 |
R1, wR2 [I> 2σ(I)] | 0.0552, 0.1433 | 0.0612, 0.1192 | 0.0458, 0.1064 |
Goodness?of?fit on F2 | 0.990 | 0.976 | 1.006 |
Fig.1 Assymetric unit(A), 2D layer along ab plane(B), perspective view(C) and simplified 3D supramolecular strcture(D) of complex 1(A) Symmetry codes: A. ?1+x, y, z; B. x, 1+y, z.
Fig.2 Assymetric unit(A), 2D layer along ab plane(B) and perspective views of 3D supramolecular structure along c(C) and b(D) axis of complex 2Symmetry codes: A. ?1+x, y, z; B. x, 1+y, z.
Fig.3 Assymetric unit(A), 1D band structure along ac plane(B) and perspective view of 3D supramolecular structure along c axis(C) of complex 3Symmetry codes: A. 1-x, y, 0.5-z; B. x, 2-y, 0.5+z.
Fig.6 Emission intensities in DMF with different anions(1×10-3 mol/L, A—C) and luminescence titration curves toward Cr2O72-(D—F) of complexes 1(A, D), 2(B, E), 3(C, F)Insets of (D)—(F) are relative S-V fitting curves. (A) a. Br-; b. SO42-; c. Cl-; d. DMF; e. NO-3; f. C2O42-; g. CO32-; h. OH-; i. F-; j. Cr2O72-; (B) a. Cl-; b. DMF; c. Br-; d. C2O42-; e. NO-3; f. F-; g. SO42-; h. CO32-; i. OH-; j. Cr2O72-; (C) a. F-; b. Cl-; c. CO32-; d. SO42-; e. C2O42-; f. DMF; g. Br-; h. OH-; i. NO-3; j. Cr2O72-.
Fig.7 Interference experiment results of complex 1 in the suspensions of different anions with and without Cr2O72-, respectively(A) and recycling luminescence intensity of complex 1 after five runs(B)(A) a. DMF; b. Cr2O72?; c. Cr2O72?+Br-; d. Cr2O72?+NO3?; e. Cr2O72?+CO32?; f. Cr2O72?+F?; g. Cr2O72?+OH?; h. Cr2O72?+SO42?; i. Cr2O72?+C2O42?; j. Cr2O72?+Cl?. (B) In each cycle, the high and low columns represent the relative luminescence intensity before and after sensing Cr2O72? compared with the original blank sample, respectively.
Fig.8 Luminescence spectra(A, C) and intensities(B, D) of complex 1(A, B) and complex 2(C, D) in DMF with different organic molecules(1×10-3 mol/L)(A, B) a. acac; b. 1-butanol; c. 1-propanol; d. isopropanol; e. DMA; f. CH2Cl2; g. 1-octanol; h. acetone; i. isobutanol; j. DMSO; k.CH2CN; L. DMF; m. CH3OH; n. CHCl3; o. THF; p. 1-OCTANOL; q. EtOH.(C, D) a. acac; b. CH3CN; c. isopropanol; d. 1-butanol; e. CH3OH; f. THF; g. DMA; h. EtOH; i. acetone; j. 1-octanol; k. CH2Cl; l. 1-propanol; m. DMF; n. isobutanol; o. DMSO; p. CHCl3; q. isooctanol.
Fig.9 Luminescence titration curves of complex 1 after addition of different amounts of acac in DMF(1×10-3 mol/L)(A), images of complex 1 with different concentrations of acac in DMF under 365 nm UV light(B), interference experiment results of complex 1 in the suspensions of different anions with and without acac, respectively(C) and recycling luminescence intensity of complex 1 after five runs(D)(C) a. Blank; b. n-butanol; c. 1-propanol; d. isopropanol; e. DMA; f. CH2Cl2; g. 1-octanol; h. acetone; i. isobutanol; j. DMSO; k. CH3CN; l. CH3OH; m. CHCl3; n. THF; o. 1-octanol; p. EtOH. (D) Green and red columns represent the luminescence intensity before and after sensing acac, respectively.
Fig.10 Luminescence spectra of complex 1 with and without acac in DMF(A) and luminescence lifetime of complex 1 at solid state before and after treatment with acac(1×10-3 mol/L)(B)
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