Recoverable fluorescence chemosensors for Ni2+ ions based on hydrogen-bonded side-chain copolymers presenting pendent benzoic acid and pyridyl receptor units

2012 ◽  
Vol 22 (24) ◽  
pp. 12358 ◽  
Author(s):  
Po-Jen Yang ◽  
Hsuan-Chih Chu ◽  
Te-Cheng Chen ◽  
Hong-Cheu Lin
Keyword(s):  
Benzoic Acid ◽  
Side Chain ◽  
Hydrogen Bonded

THE IONIZATION CONSTANTS OF p-NITROPHENYLACETIC AND PHENYLMALONIC ACIDS

1933 ◽  
Vol 8 (5) ◽  
pp. 447-449 ◽  
Author(s):  
Steward Basterfield ◽  
James W. Tomecko
Keyword(s):  
Benzoic Acid ◽  
Nitro Group ◽  
Malonic Acid ◽  
Phenylacetic Acid ◽  
Ionization Constants ◽  
Side Chain ◽  
Cooh Group ◽  
Conductivity Data ◽  
Nitrobenzoic Acid ◽  
Phenylmalonic Acid

The ionization constants of p-nitrophenylacetic and phenylmalonic acids have been determined from conductivity data. The value of K for p-nitrophenylacetic acid at 25 °C. is 1.04 × 10−4, about twice that of phenylacetic acid. The nitro group in the nucleus has not as powerful an effect on the ionization when the COOH group is in the side chain as it has when both nitro group and COOH are in the nucleus. K for p-nitrobenzoic acid is six times as great as K for benzoic acid. K for phenylmalonic acid is 2. 77 × 10−3 as compared with 1.6 × 10−3 for malonic acid.

Dielectric properties of a hydrogen-bonded liquid-crystalline side-chain polymer

1995 ◽  
Vol 16 (10) ◽  
pp. 733-739 ◽  
Author(s):  
Kazuo Araki ◽  
Takashi Kato ◽  
Uday Kumar ◽  
Jean M. J. Fréchet
Keyword(s):  
Dielectric Properties ◽  
Liquid Crystalline ◽  
Side Chain ◽  
Chain Polymer ◽  
Hydrogen Bonded

The ST pinch: A side chain-to-side chain hydrogen-bonded motif

2012 ◽  
Vol 80 (5) ◽  
pp. 1259-1263 ◽  
Author(s):  
Martha G. Bomar ◽  
Upadhyayula S. Raghavender ◽  
Alexander W. I. Spindel ◽  
Krishna Kodukula ◽  
Amit K. Galande
Keyword(s):  
Side Chain ◽  
Hydrogen Bonded

Studies of an Intermolecular Hydrogen-Bonded Complex of Butyloxy Benzoic Acid and Dipyridyl Ethylene

2015 ◽  
Vol 608 (1) ◽  
pp. 135-145 ◽  
Author(s):  
Ambika Sambyal ◽  
Gurpreet Kour ◽  
Shivangi Sharma ◽  
Rajinder K. Bamezai ◽  
Sumati Anthal ◽  
...  
Keyword(s):  
Benzoic Acid ◽  
Hydrogen Bonded

Poly(4-vinylpyridine)-based hydrogen bonded side-chain liquid crystal polymers

2008 ◽  
Vol 68 (6) ◽  
pp. 1097-1102 ◽  
Author(s):  
Xiangen Han ◽  
Subing Zhang ◽  
Robert A. Shanks ◽  
Dumitru Pavel
Keyword(s):  
Liquid Crystal ◽  
Side Chain ◽  
Liquid Crystal Polymers ◽  
Hydrogen Bonded

Biosynthese von p-Hydroxybenzoesäure und anderer Benzoesäuren in höheren Pflanzen

1964 ◽  
Vol 19 (5) ◽  
pp. 398-405 ◽  
Author(s):  
M. H. Zenk ◽  
G. Müller
Keyword(s):  
Benzoic Acid ◽  
Protocatechuic Acid ◽  
Higher Plants ◽  
Side Chain ◽  
Hydroxybenzoic Acid ◽  
Benzoic Acids ◽  
Coumaric Acid ◽  
Cinnamic Acids ◽  
Feeding Experiments ◽  
Catalpa Ovata

Feeding experiments with glucose- (2-14C), phenylalanine- (3-14C), tyrosine- (3-14C) and p-coumaric acid- (3-14C) showed that the latter three substances are incorporated in good yields into p-hydroxybenzoic acid in leaves of Catalpa ovata. Kinetic experiments showed that p-hydroxybenzoic acid is formed from phenylalanine via p-coumaric acid and the subsequent β-oxidation of the side chain. p-Hydroxybenzoic acid can also be synthetised by hydroxylation of benzoic acid, but this does not seem to be the biosynthetic route in Catalpa.Phenylalanine- (3-14C) is also incorporated into benzoic acid, protocatechuic acid, and vanillic acid by different plants; the radioactivity of the β-C atom of the amino acid was found in each case to be located in the carboxyl group of the C6 — C1 acid. This suggests that in higher plants the benzoic acids are formed from the corresponding cinnamic acids via β-oxidation.

Sign in / Sign up

Export Citation Format

Share Document