Micromolar colorimetric detection of 2-hydroxy ketones with the water-soluble tetrazolium WST-1

2016 ◽  
Vol 493 ◽  
pp. 8-10 ◽  
Author(s):  
Martin Bommer ◽  
John M. Ward
Keyword(s):  
Colorimetric Detection ◽  
Water Soluble ◽  
Hydroxy Ketones

Colorimetric detection of copper ions based on a supramolecular complex of water-soluble polythiophene and ATP

The Analyst ◽  
2013 ◽  
Vol 138 (6) ◽  
pp. 1649 ◽  
Author(s):  
Zhiyi Yao ◽  
Binghuan Huang ◽  
Xianping Hu ◽  
Li Zhang ◽  
Depeng Li ◽  
...  
Keyword(s):  
Copper Ions ◽  
Colorimetric Detection ◽  
Supramolecular Complex ◽  
Water Soluble

Water-soluble naphthalene diimides: synthesis, optical properties, and colorimetric detection of biogenic amines

2018 ◽  
Vol 5 (18) ◽  
pp. 2641-2651 ◽  
Author(s):  
Annike Weißenstein ◽  
Vincenzo Grande ◽  
Chantu R. Saha-Möller ◽  
Frank Würthner
Keyword(s):  
Optical Properties ◽  
Biogenic Amines ◽  
Colorimetric Detection ◽  
Water Soluble ◽  
Primary Amines ◽  
Naphthalene Diimides

Biocompatible water-soluble naphthalene diimides (NDIs) were synthesized and a core-dichlorinated NDI was shown to detect primary amines and biogenic diamines.

Fluorescence and colorimetric detection of ATP based on a strategy of self-promoting aggregation of a water-soluble polythiophene derivative

2015 ◽  
Vol 51 (40) ◽  
pp. 8544-8546 ◽  
Author(s):  
Dandan Cheng ◽  
Yandong Li ◽  
Jing Wang ◽  
Yujiao Sun ◽  
Lu Jin ◽  
...  
Keyword(s):  
Detection Limit ◽  
Colorimetric Detection ◽  
Water Soluble ◽  
Side Chain ◽  
Polythiophene Derivative

A sensitive fluorescent and colorimetric dual-modal probe for the detection of ATP has been developed based on a strategy of self-promoting aggregation of a cationic polythiophene derivative bearing anthracene groups in the side chain with a detection limit as low as 10−9 M.

A PEGylated-rhodamine based sensor for “turn-on” fluorimetric and colorimetric detection of Hg2+ ions in aqueous media

2014 ◽  
Vol 6 (11) ◽  
pp. 3784-3790 ◽  
Author(s):  
Subhenjit Hazra ◽  
Shruti Balaji ◽  
Mainak Banerjee ◽  
Anasuya Ganguly ◽  
Narendra Nath Ghosh ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
High Selectivity ◽  
Colorimetric Detection ◽  
Aqueous Media ◽  
Water Soluble ◽  
Mercury Ions ◽  
Rhodamine Derivative ◽  
Turn On

A water soluble turn-on fluorescent probe for the detection of mercury ions in purely aqueous media a has been developed by appending a water-compatible PEG-unit onto a rhodamine derivative. It has high selectivity for Hg2+ ions and is fairly non-toxic in intercellular studies.

A Resorcinol-Formaldehyde Resin as an Embedding Material for Electron Microscopy of Membranes

1969 ◽  
Vol 27 ◽  
pp. 328-329 ◽  
Author(s):  
J. G. Robertson ◽  
D. F. Parsons
Keyword(s):  
Electron Microscopy ◽  
Osmium Tetroxide ◽  
Neutral Lipids ◽  
Lipid Extraction ◽  
Water Soluble ◽  
Formaldehyde Resin ◽  
Electron Microscope Autoradiography ◽  
Resorcinol Formaldehyde ◽  
Major Disadvantage ◽  
Cell Organization

The extraction of lipids from tissues during fixation and embedding for electron microscopy is widely recognized as a source of possible artifact, especially at the membrane level of cell organization. Lipid extraction is also a major disadvantage in electron microscope autoradiography of radioactive lipids, as in studies of the uptake of radioactive fatty acids by intestinal slices. Retention of lipids by fixation with osmium tetroxide is generally limited to glycolipids, phospholipids and highly unsaturated neutral lipids. Saturated neutral lipids and sterols tend to be easily extracted by organic dehydrating reagents prior to embedding. Retention of the more saturated lipids in embedded tissue might be achieved by developing new cross-linking reagents, by the use of highly water soluble embedding materials or by working at very low temperatures.

Ferritin Labeled Antibody Staining of Thin Sections

1969 ◽  
Vol 27 ◽  
pp. 420-421
Author(s):  
J. D. McLean ◽  
S. J. Singer
Keyword(s):  
Biological Material ◽  
Water Soluble ◽  
Thin Sections ◽  
Antibody Staining ◽  
Thin Sectioning ◽  
Ultrathin Sections

The successful application of ferritin labeled antibodies (F-A) to ultrathin sections of biological material has been hampered by two main difficulties. Firstly the normally used procedures for the preparation of material for thin sectioning often result in a loss of antigenicity. Secondly the polymers employed for embedding may non-specifically absorb the F-A. Our earlier use of cross-linked polyampholytes as embedding media partially overcame these problems. However the water-soluble monomers used for this method still extract many lipids from the material.

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