Comparison of the acid–base properties of purine derivatives in aqueous solution. Determination of intrinsic proton affinities of various basic sitesElectronic supplementary information (ESI) available: Figures S1 (UV absorption spectra of 9-methyladenine), S2 (spectra of 1,9-dimethyladenine), S3 (plot of absorption versus H0/pH for 1,9-dimethyladenine), S4 (spectra of 1-methyladenosine), S5 (absorption versus H0/pH for 1-methyladenosine), S6 (spectra of 7,9-dimethyladenine), S7 (absorption versus H0/pH for 7,9-dimethyladenine), S8 (absorption versus H0/pH for N6′,N6′,N9-trimethyladenine), as well as S9, S10, S11 and S12 with the micro acidity constant schemes for 9-ethylguanine, guanosine, 9-methylhypoxanthine, and inosine, respectively. See http://www.rsc.org/suppdata/p2/b2/b202023h/

2002 ◽  
pp. 1320-1327 ◽  
Author(s):  
Gunnar Kampf ◽  
Larisa E. Kapinos ◽  
Rolf Griesser ◽  
Bernhard Lippert ◽  
Helmut Sigel
Keyword(s):  
Aqueous Solution ◽  
Absorption Spectra ◽  
Uv Absorption ◽  
Supplementary Information ◽  
Acidity Constant ◽  
Purine Derivatives ◽  
Proton Affinities ◽  
Acid Base ◽  
Uv Absorption Spectra

Simulation of UV Absorption Spectra and Relaxation Dynamics of Uracil and Uracil-Water Clusters

2020 ◽  
Author(s):  
Branislav Milovanović ◽  
Jurica Novak ◽  
Mihajlo Etinski ◽  
Wolfgang Domcke ◽  
Nadja Doslic
Keyword(s):  
Aqueous Solution ◽  
Gas Phase ◽  
Absorption Spectra ◽  
Absorption Spectroscopy ◽  
Water Clusters ◽  
Uv Absorption ◽  
Relaxation Dynamics ◽  
Nonradiative Relaxation ◽  
Uv Absorption Spectra ◽  
Uv Absorption Spectroscopy

Despite many studies, the mechanisms of nonradiative relaxation of uracil in the gas phase and in aqueous solution are still not fully resolved. Here we combine theoretical UV absorption spectroscopy...

UV and IR Spectral Characteristics of Chloramben in Selected Environments

Weed Science ◽  
1976 ◽  
Vol 24 (1) ◽  
pp. 107-114 ◽  
Author(s):  
V. E. Berkheiser ◽  
J. L. Ahlrichs
Keyword(s):  
Ir Spectra ◽  
Water Content ◽  
Absorption Spectra ◽  
Spectral Characteristics ◽  
Uv Absorption ◽  
Hydration Water ◽  
Carboxyl Group ◽  
Amino Group ◽  
Acid Base ◽  
Uv Absorption Spectra

Ultraviolet (UV) absorption spectra were recorded of chloramben (3-amino-2,5-dichlorobenzoic acid) and selected relatives in solutions of different pH's. From these spectra, the Broensted acid-base properties of chloramben were deduced. Interpretations of solution spectra were applied to UV absorption spectra of chloramben adsorbed onto Ca-montmorillonite at low water content. Infrared (IR) transmittance spectra were recorded of chloramben and selected derivatives in KBr pellets and band assignments were made. Interpretations of these spectra were also applied to IR spectra of chloramben adsorbed onto Ca-montmorillonite at low water content. Both UV and IR measurements indicated that protonation of the amino group occurs and that the carboxyl group of chloramben is strongly hydrogen-bonded to the hydration water of the interlayer cations.

scholarly journals Determination of Nitrite Using UV Absorption Spectra Based on Multiple Linear Regression

2013 ◽  
Vol 25 (4) ◽  
pp. 2273-2277 ◽  
Author(s):  
L.Z. Jiao ◽  
D.M. Dong ◽  
W.G. Zheng ◽  
W.B. Wu ◽  
H.K. Feng ◽  
...  
Keyword(s):  
Linear Regression ◽  
Multiple Linear Regression ◽  
Absorption Spectra ◽  
Uv Absorption ◽  
Uv Absorption Spectra

Determination of thiophanate-methyl using UV absorption spectra based on multiple linear regression

Optik ◽  
2014 ◽  
Vol 125 (1) ◽  
pp. 183-185 ◽  
Author(s):  
L. Jiao ◽  
D. Dong ◽  
W. Zheng ◽  
X. Zhao ◽  
S. Zhang ◽  
...  
Keyword(s):  
Linear Regression ◽  
Multiple Linear Regression ◽  
Absorption Spectra ◽  
Uv Absorption ◽  
Thiophanate Methyl ◽  
Uv Absorption Spectra
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