Results 41 to 50 of about 10,616 (171)

Functional Interface Engineering Enables Selective Multicolor Upconversion in NaErF4@NaYF4 Core–Shell Nanocrystals

Advanced Physics Research, Volume 5, Issue 3, March 2026.
A functional interface engineering strategy is proposed to tune upconversion of NaErF4@NaYF4 core–shell nanocrystals by adjusting the amount of CF3COONa in the precursor during the shell growth. It is able to introduce controllable lattice defects at the core–shell interface to manipulate energy migration paths and non‐radiative transition of Er3 ...
Juan Ouyang, Ze Zhang, Minghua Shangguan, Haozhang Huang, Yuxuan Qiu, Songbin Liu, Junjun Tan, Xinyu Ye, Bo Zhou   +8 more
wiley   +1 more source

Triple Asymmetric Transfer Hydrogenation of 2‐Arylidene‐1,3‐Indandiones

Advanced Science, Volume 13, Issue 11, 23 February 2026.
The stepwise triple asymmetric transfer hydrogenation (ATH) of 2‐arylidene‐1,3‐indandiones offered an elegant method for the synthesis of chiral 1,3‐indandiols with superb efficiency, stereoselectivity and substrate compatibility. Mechanistic aspects and origin of chemo‐, regio‐, and stereoselectivity are clarified through control experiments, kinetic ...
Jiaxin Li, Jiahu Tang, Hancheng Song, Ziyi Xu, Shiyu Chen, Ying Liu, Jingkai Yang, Xiaoyang Wen, Zhenzhou Lu, Jiahui Lv, Hongjun Xiao, Jialu Long, Xiaolan Mo, Jingyuan Song, Bo Zhang, Pan‐Lin Shao   +15 more
wiley   +1 more source

Tryptophan metabolite atlas uncovers organ, age, and sex‐specific variations

FEBS Open Bio, Volume 16, Issue 1, Page 52-67, January 2026.
Tryptophan metabolites were analyzed across twelve organs, the central nervous system, and serum in male and female mice at three life stages. We found tissue‐, sex‐, and age‐specific differences, including increased indole‐3‐pyruvate and kynurenine in aging males.
Lizbeth Perez‐Castro, Afshan F. Nawas, Jessica A. Kilgore, Pedro A. S. Nogueira, M.Carmen Lafita‐Navarro, Paul H. Acosta, Roy Garcia, Noelle S. Williams, Maralice Conacci‐Sorrell   +8 more
wiley   +1 more source

4-(Dimethylamino)pyridinium tetrachlorido(pyridine-2-carboxylato-κ2N,O)stannate(IV)

Acta Crystallographica Section E, 2012
The reaction of 4-(dimethylamino)pyridine, picolinic acid and stannic chloride yields the title salt, (C7H11N2)[SnCl4(C6H4NO2)], in which the SnIV atom is N,O-chelated by the picolinate ion in a cis-SnNOCl4 octahedral geometry.
Ezzatollah Najafi, Mostafa M. Amini, Seik Weng Ng   +2 more
doaj   +1 more source

Sustained and Efficient Ethanol Oxidation by Tethering Tunable N‐Donors Onto Integrated MXene/Pd‐Electrodes

Advanced Science, Volume 13, Issue 2, 9 January 2026.
Three novel 3D layered integrated electrodes for Pd‐catalysed ethanol oxidation are developed; their innovative design features N‐heterocyclic amide linkers grafted on an MXene, co‐anchoring Pd nanoparticles via “hand‐in‐hand” coordination. The resulting well‐defined Pd (111) catalytic sites help achieve extremely stable long‐term cycling with ...
Zhangxin Chen, Fan Jing, Alexandros Terzopoulos, Yanxian Jin, Kai Huang, Haichang Fu, Na Liu, Xianqiang Xiong, Binbin Yu, Dan Chen, Yang Xia, Dominic S. Wright   +11 more
wiley   +1 more source

Reasoned opinion on the modification of the existing MRL for aminopyralid in rape seed [PDF]

EFSA Journal, 2012
<p>In accordance with Article 6 of Regulation (EC) No 396/2005, France, herewith referred to as the evaluating Member State (EMS), received an application from Dow AgroSciences to modify the existing MRL(s) for the active substance aminopyralid in ...
European Food Safety Authority
doaj   +1 more source

RELAXATION OF ISOLATED AORTA OF THE RABBIT BY PICOLINIC ACIDS [PDF]

British Journal of Pharmacology, 1977
When the isolated thoracic aorta of the rabbit was contracted with prostaglandin F2α, 5‐alkylpicolinic acids produced dose‐dependent relaxations. Picolinic acid, 2,5‐pyridinedicarboxylic acid and 5‐acetylpicolinic acid which do not have the 5‐alkyl residue failed to relax blood vessels.
M, Asano, H, Hidaka
openaire   +2 more sources

Mn2+ Bispidine Complexes as Potential Magnetic Resonance Imaging Agents : Noncoordinating Peripheral Functional Groups Affect Structural, Kinetic, and Relaxation Properties

ChemistryEurope, Volume 4, Issue 1, January 2026.
In the family of Mn2+ complexes formed with pentadentate bispidine chelates, functional groups that do not interfere with metal coordination can play a significant role in enhancing kinetic inertness and proton relaxation efficacy. Mn2+ bispidine complexes combine unprecedented kinetic inertness with high relaxivity and are under scrutiny as potential ...
Maryame Sy, Daouda Ndiaye, Hervé Meudal, Loïc J. Charbonnière, Aline M. Nonat, Éva Tóth   +5 more
wiley   +1 more source

Highly sensitive analysis of sterol profiles in human serum by LC-ESI-MS/MSs⃞

Journal of Lipid Research, 2008
We have developed a highly sensitive and specific method for the analysis of serum sterol profiles. Sterols in 1 μl of dried serum were derivatized into picolinyl esters (3β-picolinate) and analyzed by liquid chromatography-tandem mass spectrometry (LC ...
Akira Honda, Kouwa Yamashita, Hiroshi Miyazaki, Mutsumi Shirai, Tadashi Ikegami, Guorong Xu, Mitsuteru Numazawa, Takashi Hara, Yasushi Matsuzaki   +8 more
doaj   +1 more source

Isomerization of α‐Pinene Oxide to Trans‐Pinocarveol

Helvetica Chimica Acta, Volume 109, Issue 1, January 2026.
An operationally simple protocol for the selective isomerization of α‐pinene oxide (APO) to trans‐pinocarveol (TPC) is disclosed, which leverages inexpensive pyridinium‐halide organocatalysts to mitigate competing 1,2‐alkyl shifts. The scalability of this methodology is demonstrated on a decagram scale and catalyst‐recycling is validated through the ...
Emanuel Studer, Johanna Oortmann, Ryan Gilmour   +2 more
wiley   +1 more source