JOURNAL OF COORDINATION CHEMISTRY
·
2018
·
IF 1.703
Zi-Mei Ding,Wen-Li Cao,Xiao-Jing Hang,Xiao Ma,Hui Zheng,Kang-Zhen Xu,Jie Huang
The green nitrogen-rich coordination compound Cd(SCZ)2(AFT)2 (1) (AFT =4-amino-3-(5-tetrazolate)-furazan and SCZ = semicarbazide) was first synthesized and characterized by EA and Fourier Transform Infrared (FT-IR). The single crystal was cultivated and determined with X-ray diffraction. It revealed that 1 crystallizes in the monoclinic space group P21/c. A Cd2+ ion is coordinated by four N atoms and two O atoms to form a distorted octahedral structure. Among them, two nitrogen atoms are from the two AFT ions and the other four atoms are from two SCZ molecules. The thermal decomposition behavior of 1 was studied with DSC and TG-DTG methods. The apparent activation energy (E), thermal stability, and safety parameters (T
SADT, T
TIT, and T
b) were calculated for 1. Moreover, entropy of activation (ΔS
≠), enthalpy of activation (ΔH
≠), free energy of activation (ΔG
≠), specific heat capacity (C
p), and impact sensitivity were also discussed in detail.
研究领域:
化学
·
材料科学
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2013
·Vol. 180
·期 11
·1051-1057
·
IF 3.434
Wang Ai-Jun,Guo Han,Zhang Ming,Zhou Dan-Ling,Wang Rui-Zhi,Feng Jiu-Ju
We have developed a simple, sensitive and selective colorimetric method for the detection of cadmium(II) (Cd 2+ ) using gold nanoparticles modified with 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole. Organic solvents or additives are not required. It is found that Cd 2+ induces the aggregation of the modified Au-NPs via chelation, leading to a color change from red to blue. This change can be seen with bare eyes, and monitored by UV–vis spectroscopy, transmission electron microscopy and dynamic light scattering. The detection limit is 30 nM (at a signal-to-noise ratio of 3). The new approach was successfully applied to the detection of Cd 2+ in spiked samples of tap water and lake water, and the results agree well with those obtained by flame atomic absorption spectroscopy.
A simple, sensitive and selective colorimetric method was developed for the detection of Cd 2+ , where 4-amino-3-hydrazino-5-mercapto-1,2,4-triazol (AHMT) modified gold nanoparticles (AuNPs) were used as optical probes. The presence of Cd 2+ induced the aggregation of the AHMT-AuNPs through the chelation process. This approach was successfully applied for the detection of Cd 2+ in spiked samples of tap water and lake water.
研究领域:
分析化学
·
环境科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2014
·
IF 3.84
Zhengbo Chen,Yiming Hu,Qinrui Yang,Chongqing Wan,Yuan Tan,He Ma
Herein, a simple and rapid colorimetric adrenaline sensor based on 4-amino-3-hydrazino-5-mercapto-1,2,4-triazol (AHMT)-functionalized gold nanoparticles (AuNPs) was presented. This assay relied upon the distance-dependent optical properties of AuNPs, and the aggregation of AuNPs was induced by the strong hydrogen bonding between AHMT and adrenaline. The colorimetric sensor exhibited a high sensitivity with a low detection limit of 1 nM. Furthermore, we demonstrated the application of the present approach in human serum sample, which suggested its great potential for diagnostic purposes.
研究领域:
分析化学
·
纳米医学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Haimin Li,Yanling Tang,Shuqian Liu,Ming Li,Hu Luo,Zheng Zhang,Haohui Li,Yuhao Wei,Bo An,Xingchong Liu,Hanyu Wang
Organic-inorganic hybrid perovskites (PVK) have aroused big enthusiasm of many researchers due to their excellent photoelectric properties. However, PVK films always inevitability demonstrate large number of defects, thus greatly affect the performance and stability of the device. Many parts of the defects are aroused from ion migrations because of the weak antibonding between Pb and I. Here, we use 4-Amino-3,5-difluorobenzonitrile (AFBN) to regulate the light-absorbing layer of perovskite films. The AFBN molecules with donor-π-acceptor (D-π-A) structure can simultaneously interact with MA + /Pb 2+ cations and I - anions in PVK, which can validly inhibit ion migration and effectively restrain non-radiative recombination, thus improves the photoelectric performance of inverted perovskite solar cells (i-PSCs). The AFBN-based device achieved a champion efficiency of 18.55%, which is a high PCE for inverted PSCs with simple structure of FTO/NiO x /perovskite/PCBM/BCP/Ag and for devices with relatively high band gap of 1.62 eV, while the control one only shows an efficiency of 16.37%. Meanwhile, the modified devices demonstrate excellent humidity stability. This work provides a new path for dipoles with donor-π-acceptor structure to inhibit ion migrations for improved efficiency and stability of reverse PSCs.
研究领域:
材料科学
·
光伏技术
·
太阳能
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）