A novel chain complex was synthesized and its crystal structure has been deter- mined by X-ray diffraction technique. It was found that the local coordination geometry around Cu(Ⅱ) is a distorted tetrahedron and C14H...A novel chain complex was synthesized and its crystal structure has been deter- mined by X-ray diffraction technique. It was found that the local coordination geometry around Cu(Ⅱ) is a distorted tetrahedron and C14H9CuNO3CH3OH is bridged by the carboxylate oxygen atom to form an infinite one-dimensional linear chain. The hydrogen bond exists between O(1) and solvate molecule O(4). The crystal belongs to monoclinic, space group P21 with a = 9.6650(19), b = 7.1280(14), c = 9.925(2) ? b = 98.39(3)? V = 676.4(2) 3, Z = 2, F(000) = 342 and m(MoK? = 1.629 mm-1 .展开更多
Glucose is directly related to brain activity and to diabetes. Therefore, developing a rapid and sensitive method for glucose de- tection is essential. Here, label-free glucose detection at attomole levels was realize...Glucose is directly related to brain activity and to diabetes. Therefore, developing a rapid and sensitive method for glucose de- tection is essential. Here, label-free glucose detection at attomole levels was realized by detecting the average diameter change of gold nanoparticles （AuNPs） utilizing dynamic light scattering （DLS）. Single-strand DNA （ssDNA） adsorbed into the AuNPs＇ surfaces and prevented them from aggregating in solution that contained NaC1. However, ssDNA cleaved onto ssDNA fragments upon addition of glucose, and these fragments could not adsorb onto the AuNPs＇ surfaces. Therefore, in high-salt solution, AuNPs would aggregate and their average diameter would increase. Based on monitoring the average diameter of AuNPs with DLS, glucose could be detected in the range from 15 pmol/L to 2.0 nmol/L, with a detection limit of 8.3 pmol/L. Satisfactory results were also obtained when the proposed method was applied in human serum glucose detection.展开更多
文摘A novel chain complex was synthesized and its crystal structure has been deter- mined by X-ray diffraction technique. It was found that the local coordination geometry around Cu(Ⅱ) is a distorted tetrahedron and C14H9CuNO3CH3OH is bridged by the carboxylate oxygen atom to form an infinite one-dimensional linear chain. The hydrogen bond exists between O(1) and solvate molecule O(4). The crystal belongs to monoclinic, space group P21 with a = 9.6650(19), b = 7.1280(14), c = 9.925(2) ? b = 98.39(3)? V = 676.4(2) 3, Z = 2, F(000) = 342 and m(MoK? = 1.629 mm-1 .
基金supported by the National Natural Science Foundation of China(21305053)the Natural Science Fund for Colleges and Universities in Jiangsu Province(13KJB150015)+2 种基金the Natural Science Fund in Jiangsu Province(BK20130227)the Scientific Research Support Project for Teachers with Doctor’s Degrees(Jiangsu Normal University,China,12XLR022)the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions
文摘Glucose is directly related to brain activity and to diabetes. Therefore, developing a rapid and sensitive method for glucose de- tection is essential. Here, label-free glucose detection at attomole levels was realized by detecting the average diameter change of gold nanoparticles （AuNPs） utilizing dynamic light scattering （DLS）. Single-strand DNA （ssDNA） adsorbed into the AuNPs＇ surfaces and prevented them from aggregating in solution that contained NaC1. However, ssDNA cleaved onto ssDNA fragments upon addition of glucose, and these fragments could not adsorb onto the AuNPs＇ surfaces. Therefore, in high-salt solution, AuNPs would aggregate and their average diameter would increase. Based on monitoring the average diameter of AuNPs with DLS, glucose could be detected in the range from 15 pmol/L to 2.0 nmol/L, with a detection limit of 8.3 pmol/L. Satisfactory results were also obtained when the proposed method was applied in human serum glucose detection.
