Results 21 to 30 of about 1,343 (162)

Isoflavonoid composition and biological activity of extracts from soybean seedlings treated by different elicitors

Anais da Academia Brasileira de Ciências, 2018
Time-course and dose-response experiments were carried out to establish the ability for synthesizing isoflavonoids of soybean seedlings (cv. Soyica P34) treated with salicylic (SA) and isonicotinic acids (INA).
DIEGO DURANGO, JENNIFER MURILLO, FERNANDO ECHEVERRI, GUSTAVO ESCOBAR, WINSTON QUIÑONES   +4 more
doaj   +1 more source

A Robust Metal‐Organic Framework With ‘Molecular Gates’ for Efficient Separation of Ethane From Ethylene

Angewandte Chemie, Volume 138, Issue 21, 18 May 2026.
By installing an amino‐based molecular gate at a specific site within a robust zinc‐adenine framework, temperature‐tunable inversion of C2H6/C2H4 selectivity is achieved, enabling single‐step on‐stream production of polymer‐grade ethylene. ABSTRACT Ethane‐selective sorbents can enable single‐step purification of ethylene but remain elusive to date.
Shao‐Min Wang, Liping Zhang, Yitao Li, Ziluo Fang, Xue Han, Stephen P. Thompson, Qing‐Yuan Yang, Sihai Yang   +7 more
wiley   +2 more sources

New Manganese(II) Azido Coordination Polymers with Nicotinic/Isonicotinic Acids as Coligands: Synthesis, Structure, and Magnetic Properties

, 2016
The reactions of MnII ions with azido ligands in the presence of nicotinic/isonicotinic acids gave two manganese(II) azido coordination polymers, [Mn3(L1)2(N3)4]n·nH2O (1) and [Mn2(L2)(N3)3]n (2), where L1 = nicotinate and L2 = isonicotinate, with ...
Qian Yang (300330), Bo-Wen Hu (1939711), Xiao-Feng Zhang (597472), Jiong-Peng Zhao (1593115), Xian-He Bu (1605673)   +4 more
core   +2 more sources

Picolinic and Isonicotinic Acids: A Fourier Transform Microwave Spectroscopy Study

, 2016
The rotational spectra of laser ablated picolinic and isonicotinic acids have been studied using broadband chirped pulse (CP-FTMW) and narrowband molecular beam (MB-FTMW) Fourier transform microwave spectroscopies. Two conformers of picolinic acid, s-cis-
Vanina G. Franco (1711198), Carlos Cabezas (1291551), José L. Alonso (1291563), Marcelino Varela (1711195), Juan C. López (1291557), Isabel Peña (1291545)   +5 more
core   +1 more source

Iodolactonization of 3-Alkynylthiophene-2-Carboxylic and 3-Alkynylpicolinic Acids for the Synthesis of Fused Heterocycles [PDF]

, 2020
The iodolactonization of 3-alkynylthiophene-2-carboxylic acids and 3-alkynylpicolinic acids has been investigated. Using I2 as the iodine source and NaHCO3 as the base in MeCN, the process took place smoothly to afford thienopyranones and ...
Mancuso, Raffaella, Antonio Palumbo Piccionello, Mariangela Novello, Raffaella Mancuso, Bartolo Gabriele, Patrizio Russo, Novello, Mariangela, Gabriele, Bartolo, Palumbo Piccionello, Antonio, Russo, Patrizio   +9 more
core   +1 more source

Ratiometric Mycotoxin Detection in Living Plants With Dual‐Emissive Nanosensors

Advanced Materials, EarlyView.
A minimally invasive microneedle patch integrates carbon dot‐embedded metal–organic frameworks as nanosensors to detect a key fungal toxin in living plants. The nanosensor produces a ratiometric fluorescence signal that enables early, non‐destructive diagnosis of fungal infection before visible symptoms, offering a new biomaterials‐based strategy for ...
Yuliang Li, Di Shen, Ziyang Huang, Suppanat Puangpathumanond, Calvin Thenarianto, Yue Zhao, Jolly Madathiparambil Saju, Rajani Sarojam, Dongmei Zhou, Tedrick Thomas Salim Lew   +9 more
wiley   +1 more source

Hydrogen-bond induced surface core-level shift in pyridine carboxylic acids

, 2001
Intermolecular hydrogen bonding in thick films of pyridine carboxylic acids (isonicotinic; picolinic and bi-isonicotinic acid) evaporated onto rutile TiO2(1 1 0) has been investigated with X-ray photoelectron spectroscopy and X-ray absorption ...
Schnadt, J, Hillesheimer, H, Patthey, L, Bruhwiler, PA, Nordlund, D, Luo, Yi, Nagasono, M, Krempasky, J, Martensson, N, O'Shea, JN,   +9 more
core   +2 more sources

A Versatile Heterometallic Microporous MOF for Photocatalytic Hydrogen Generation

Small, EarlyView.
This work describes a green and scalable approach to robust and flexible heterometallic MOFs, MIP‐215's, with tunable photoactivity for efficient, noble‐metal‐free solar hydrogen production. ABSTRACT Photocatalytic particulate systems offer a cost‐effective solar hydrogen production but are generally limited by narrow visiblelight absorption and poor ...
Xingze Wang, Juan José Ramírez‐Hernández, Iurii Dovgaliuk, Valentin Diez Cabanes, Debanjan Chakraborty, Herme G. Baldoví, Hermenegildo García, Guillaume Maurin, Sergio Navalon, Georges Mouchaham, Christian Serre   +10 more
wiley   +1 more source

Permeability of Human Erythrocytes to Isonicotinic Acid Hydrazide and its Metabolites

, 1973
Intra- and extracellular concentrations of isonicotinic acid hydrazide equalized rapidly in suspensions of washed human or rabbit erythrocytes incubated with the drug in Tyrode solution at pH 7.4, 37 °C. Thus, contrary to an earlier report, erythrocytes
D. W. Russell
core   +1 more source

Pyridinium salts of dithiophosphoric acids on the basis of nicotinic acids and their isomers, 3-hydroxypyridine, and 3-pyridinemethanol

, 2019
© 2019, © 2019 Taylor & Francis Group, LLC. A new series of chiral carboxypyridinium dithiophosphates were synthesized by the reactions of nicotinic, isonicotinic, and picolinic acids with dithiophosphoric acid on the basis (1S)-endo-(–)-borneol in ...
Batyeva E., Timushev I., Nizamov I., Salikhov R., Shulaeva M., Cherkasov R., Ponomareva A., Pozdeev O., Nikitin Y., Yakimov V.   +9 more
core   +2 more sources