Effect of Host Substituent upon Inclusion Complexation of Aliphatic Alcohols with Organoseleno β-Cyclodextrins

2000 ◽  
Vol 2000 (2) ◽  
pp. 90-92 ◽  
Author(s):  
Yu Liu ◽  
Chang-Cheng You ◽  
Takehiko Wada ◽  
Yoshihisa Inoue
Keyword(s):  
Stability Constants ◽  
Inclusion Complexation ◽  
Aliphatic Alcohols ◽  
Buffer Solution ◽  
Aqueous Buffer ◽  
Aqueous Buffer Solution ◽  
The Stability

The effect of self-including host substituent upon the inclusion complexation of arylseleno β-cyclodextrins with alkanol guests has been investigated in aqueous buffer solution at 25°C, by using spectropolarimetric titrations, and the results show that the stability constants of the host–guest complexes formed are correlated with the Hammett's σ value of the host's substituent.

Heat and pH Alter the Concentration of Deoxynivalenol in an Aqueous Enviroment†

1998 ◽  
Vol 61 (3) ◽  
pp. 365-367 ◽  
Author(s):  
CHARLENE E. WOLF ◽  
LLOYD B. BULLERMAN
Keyword(s):  
Buffer Solution ◽  
Aqueous Buffer ◽  
Aqueous Buffer Solution ◽  
The Stability ◽  
Partial Destruction

The effects of heat (100, 120, and 170°C) and pH (4.0, 7.0, and 10.0) on the stability of deoxynivalenol (DON) were measured in an aqueous buffer solution for different periods of time (15, 30, and 60 min). At pH 4.0 DON appeared to be very stable showing no destruction at 100 or 120°C and only partial destruction at 170°C after 60 min. At pH 7.0 DON was still stable but showed more destruction at 170°C after 15 min. At pH 10.0 DON was partially destroyed at 100°C after 60 min and was totally destroyed at 120°C after 30 min and at 170°C after 15 min.

Pseudobasen aus Chinolinium-Salz und Alkoxiden / Pseudobases from Quinolinium-Salts and Aleoxides

1981 ◽  
Vol 36 (6) ◽  
pp. 745-749 ◽  
Author(s):  
Wolf-H. Gündel ◽  
Helmut Berenbold
Keyword(s):  
Buffer Solution ◽  
Solution Ph ◽  
Aqueous Buffer ◽  
Aqueous Buffer Solution ◽  
Quinolinium Salt ◽  
High Yields ◽  
Quinolinium Salts

Abstract The quaternary 3-cyano-quinolinium salt (1b) reacts in aqueous buffer solution (pH 7.5-12) to oxy-di(1.4-dihydroquinoline) (7), which gives on addition of alcohols or oximes in high yields the alcoxy-dihydroquinolines (8a-c) or dihydroquinolyl-oximethers (8d-f).

A water-soluble sulfonate-BODIPY based fluorescent probe for selective detection of HOCl/OCl−in aqueous media

The Analyst ◽  
2014 ◽  
Vol 139 (12) ◽  
pp. 2986-2989 ◽  
Author(s):  
Jiyoung Kim ◽  
Youngmi Kim
Keyword(s):  
Electron Transfer ◽  
Fluorescent Probe ◽  
Fluorescence Intensity ◽  
Photoinduced Electron Transfer ◽  
Aqueous Media ◽  
Water Soluble ◽  
Selective Detection ◽  
Buffer Solution ◽  
Aqueous Buffer ◽  
Aqueous Buffer Solution

A water-soluble sulfonate-BODIPY dye1was developed for the selective detection of HOCl/OCl−in aqueous buffer solution. The probe, which displays extremely weak fluorescence owing to efficient photoinduced electron transfer (PeT) from the pendant catechol donor, responds to HOCl/OCl−through a dramatic enhancement of its fluorescence intensity.

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