Results 121 to 130 of about 174,602 (303)

Heterometallic Molecular and Ionic Isomers [PDF]

Numerous descriptions of structural isomerism in metal complexes do not list any molecular vs ionic isomers. At the same time, one of the most striking examples of structural isomerism in organic chemistry is molecular urea, which has the same atomic ...
Stegman, Samantha, Chang, Tieyan, Chang, Joyce, Wei, Zheng, Chen, Yu-Sheng, Berry, John F., Han, Haixiang, Zhang, Yuxuan, Dikarev, Evgeny V.   +8 more
core   +1 more source

Metal Active‐Site Exposure via Ligand Engineering Boosts CO2‐to‐Ethylene Conversion on Cu18 Nanoclusters

Advanced Science, EarlyView.
Through quantitative ligand stripping of [Cu18H17(PR3)10]+ nanoclusters via intramolecular interaction modulation, selectivity for CO2 electroreduction to C2H4 is significantly enhanced. The weakly coordinating ligand triggers dual‐ligand stripping (FEC2H4 = 70.59%), whereas the strongly coordinating ligand results in single‐ligand retention (FEC2H4 ...
Ziqi Chen, Yang Zuo, Yu Zhu, Shuo Zhang, Along Ma, Shiyin Yang, Zhengmao Yin, Xiaoshuang Ma, Shuxin Wang   +8 more
wiley   +1 more source

A Mass Spectrometry Approach Reveals Fatty Acid Isomerism in Tomato Cold Tolerance

Advanced Science
Plants can adapt to environmental fluctuations through modulating their fatty acids (FAs) dynamically. In this study, an enhanced mass spectrometry approach is utilized to uncover an unexplored landscape of FAs and FA isomers that are critical for cold ...
Leelyn Chong, Hengxue Shi, Qirui Yu, Xiaoning Shi, Zhaoxing Jia, Ziyun Dong, Yu Xia, Yingfang Zhu   +7 more
doaj   +1 more source

Icosahedral metallic nanoclusters: low-temperature structures or pre-melting ones?

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов
Melting of cuboctahedral nanoclusters of fcc metals (Ag, Au, Cu, Ni, Pd и Pt) containing 561 atoms and a transition to icosahedral isomers preceding their melting were simulated using the isothermal molecular dynamics.
I.V. Karakeyan, V.V. Puitov, I.V. Talyzin, V.M. Samsonov   +3 more
doaj   +1 more source

Local Solvent Ordering Drives Supramolecular Chirality Inversion

Advanced Science, EarlyView.
Local solvent organization is shown to govern supramolecular chirality by selecting distinct chiral assembly pathways. A subtle change in water‐DMSO composition reverses the helical sense of a chiral perylene bisimide, while heating induces an irreversible thermal inversion to a more stable enantiomorph.
Triza Pal, Akta Singh, Subinoy Adhikari, Jagannath Mondal, Debangshu Chaudhuri   +4 more
wiley   +1 more source

Characterization of Crocetin Isomers in Serum Samples via UHPLC-DAD-MS/MS and NMR after Saffron Extract (Safr’Inside™) Consumption

Metabolites
The therapeutic effects of saffron have been reported and described in relation to its major derivatives. Among them, in terms of saffron’s properties, crocin and crocetin absorption and bioavailability have been the most studied.
Adeline Vignault, Carole Vaysse, Karène Bertand, Stéphanie Krisa, Arnaud Courtois, Benjamin Moras, Tristan Richard, David Gaudout, Line Pourtau   +8 more
doaj   +1 more source

Physicochemical, self-assembly and field-effect transistor properties of anti- and syn- thienoacene isomers

, 2011
Physicochemical, self-assembly and field-effect transistor properties of anti- and syn- thienoacene isomersThe relationships between the molecular structure, self-assembly and charge transport properties of two fused-ring thienoacene isomers, a sickle ...
Wen, Shu-Hao, Han, Ke-Li, Hu, Wenping, 邓伟侨, Li, Hongxiang, Dong, Huanli, HongxiangLi, XiaoweiZhan, Zhan, Xiaowei, Li, Rongjin, Deng, Wei-Qiao, 胡文平   +11 more
core   +1 more source

A C‐Nucleoside Analogue of Cordycepin With High Metabolic Stability and Potent Anti‐Psoriatic Activity via Microneedle Delivery

Advanced Science, EarlyView.
This work identified CPD3a as a potent, stable C‐nucleoside cordycepin derivative. When formulated into microneedle array for topical treatment, it ameliorated psoriasis by rebalancing immunity and enhancing antioxidant defenses. ABSTRACT Psoriasis is a chronic inflammatory disorder characterized by immune dysregulation and epidermal hyperplasia ...
Wenfang Pan, Xinyue Shao, Yuanchen Zhong, Xujie Sun, Lixuan Yin, Zongyan He, Tianqun Lang, Yuanchao Xie   +7 more
wiley   +1 more source

Positional Isomeric Effects on the Physicochemical Properties of Polymeric Matrix and Polymer@TiO₂ Nanocomposites

Applied Sciences
This study investigates the influence of positional isomerism on the physicochemical characteristics of polymeric matrices by examining polyo-anisidine (POA) and polyp-anisidine (PPA) in conjunction with TiO2 nanoparticles.
Badria M. Al-Shehri, Amina Bekhoukh, Soumia Benkhatou, Imane Moulefera, Afaf Y. Khormi, Rabab A. Hakami, Magbool Alelyani, Jinan Abdelkader, Abdelghani Benyoucef, Youssef Bakkour   +9 more
doaj   +1 more source

Formation of pentacyclic isomers.

, 2018
Formation of pentacyclic isomers.
Muhammed Al-Broumi (5410655), René Csuk (5410658), Issa Al-Amri (5410652), Ahmed Al-Harrasi (556399), Abdul Latif Khan (535010), Najeeb Ur Rehman (5410649), Javid Hussain (556398), Hidayat Hussain (764851)   +7 more
core   +1 more source