Microphase Mechanism of “Superquenching” of Luminescent Probes in Aqueous Solutions of DNA and Some Other Polyelectrolytes

2014 ◽  
Vol 118 (15) ◽  
pp. 4245-4252 ◽  
Author(s):  
Michael G. Kuzmin ◽  
Irina V. Soboleva ◽  
Nikita A. Durandin ◽  
Ekaterina S. Lisitsyna ◽  
Vladimir A. Kuzmin
Keyword(s):  
Aqueous Solutions ◽  
Luminescent Probes

Pillared metal organic frameworks for the luminescence sensing of small molecules and metal ions in aqueous solutions

2015 ◽  
Vol 44 (4) ◽  
pp. 1754-1760 ◽  
Author(s):  
Fu-Hong Liu ◽  
Chao Qin ◽  
Yan Ding ◽  
Han Wu ◽  
Kui-Zhan Shao ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Metal Ions ◽  
Small Molecules ◽  
Metal Organic Frameworks ◽  
Luminescent Probes ◽  
Highly Sensitive ◽  
Metal Organic

Two pillared-layer MOFs as luminescent probes with multifunctional sensitivities to detect metal ions and small molecules were reported. Our results show that the luminescence intensities of 1a and 2a are highly sensitive to Fe3+ and Cd2+ ions and small molecules such as acetone and nitrobenzene.

Heterometal–organic frameworks as highly sensitive and highly selective luminescent probes to detect I−ions in aqueous solutions

2015 ◽  
Vol 51 (19) ◽  
pp. 3985-3988 ◽  
Author(s):  
Peng-Fei Shi ◽  
Huan-Cheng Hu ◽  
Zhan-Yun Zhang ◽  
Gang Xiong ◽  
Bin Zhao
Keyword(s):  
Aqueous Solutions ◽  
Luminescent Probes ◽  
Highly Sensitive

Cationic heterometal–organic frameworks serve as highly sensitive and highly selective luminescent probes for detecting I−ions in aqueous solutions.

Spiral frameworks constructed by 1,2-phenylene-dioxydiacetic acid as highly sensitive and selective luminescent probes to detect PO43− ions in aqueous solutions

RSC Advances ◽  
2016 ◽  
Vol 6 (89) ◽  
pp. 85704-85709 ◽  
Author(s):  
Enjun Gao ◽  
Na Sun ◽  
Yang Zhan ◽  
Xue Qiu ◽  
Yuqing Ding ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Coordination Polymers ◽  
Hydrothermal Conditions ◽  
Luminescent Probes ◽  
Highly Sensitive ◽  
Photo Luminescent

Three novel clubbed photo-luminescent lanthanide 1D coordination polymers, [Ln(L)(NO3)(H2O)2]n (where Ln is La, Ce, and Pr, respectively, and H2L = 1,2-phenylenedioxydiacetic acid), were synthesized under hydrothermal conditions.

Ultrathin frozen sections of yeast without aldehyde prefixation

1978 ◽  
Vol 36 (2) ◽  
pp. 58-59
Author(s):  
K. J. Böhm ◽  
a. E. Unger
Keyword(s):  
Aqueous Solutions ◽  
Biological Material ◽  
Yeast Cells ◽  
Frozen Sections ◽  
Good Preservation ◽  
Ultrathin Frozen Sections

During the last years it was shown that also by means of cryo-ultra-microtomy a good preservation of substructural details of biological material was possible. However the specimen generally was prefixed in these cases with aldehydes.Preparing ultrathin frozen sections of chemically non-prefixed material commonly was linked up to considerable technical and manual expense and the results were not always satisfying. Furthermore, it seems to be impossible to carry out cytochemical investigations by means of treating sections of unfixed biological material with aqueous solutions.We therefore tried to overcome these difficulties by preparing yeast cells (S. cerevisiae) in the following manner:

Imaging polymers, proteins and dna in aqueous solutions with the atomic force microscope

1989 ◽  
Vol 47 ◽  
pp. 32-33
Author(s):  
S.A.C. Gould ◽  
B. Drake ◽  
C.B. Prater ◽  
A.L. Weisenhorn ◽  
S.M. Lindsay ◽  
...  
Keyword(s):  
Amino Acids ◽  
Dna Sequencing ◽  
Aqueous Solutions ◽  
Atomic Force Microscope ◽  
Piezoelectric Crystal ◽  
Atomic Force ◽  
Structure Of Molecules ◽  
Optical Lever

The atomic force microscope (AFM) is an instrument that can be used to image many samples of interest in biology and medicine. Images of polymerized amino acids, polyalanine and polyphenylalanine demonstrate the potential of the AFM for revealing the structure of molecules. Images of the protein fibrinogen which agree with TEM images demonstrate that the AFM can provide topographical data on larger molecules. Finally, images of DNA suggest the AFM may soon provide an easier and faster technique for DNA sequencing.The AFM consists of a microfabricated SiO2 triangular shaped cantilever with a diamond tip affixed at the elbow to act as a probe. The sample is mounted on a electronically driven piezoelectric crystal. It is then placed in contact with the tip and scanned. The topography of the surface causes minute deflections in the 100 μm long cantilever which are detected using an optical lever.

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