Thiophene-Based Oligomers Interacting with Silver Surfaces and the Role of a Condensed Benzene Ring

2015 ◽  
Vol 120 (1) ◽  
pp. 252-264 ◽  
Author(s):  
A. Guarnaccio ◽  
M. D’Auria ◽  
R. Racioppi ◽  
G. Mattioli ◽  
A. Amore Bonapasta ◽  
...  
Keyword(s):  
Benzene Ring ◽  
Silver Surfaces

The role of non adiabatic mechanisms in the dissociation dynamics of O2 on silver surfaces

1996 ◽  
Vol 351 (1-3) ◽  
pp. 24-42 ◽  
Author(s):  
Ofra Citri ◽  
Roi Baer ◽  
Ronnie Kosloff
Keyword(s):  
Dissociation Dynamics ◽  
Silver Surfaces

scholarly journals CO2 Separation with Polymer/Aniline Composite Membranes

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1363
Author(s):  
Hwa Jin Lee ◽  
Sang Wook Kang
Keyword(s):  
Benzene Ring ◽  
Polymer Matrix ◽  
Composite Membranes ◽  
Separation Performance ◽  
Amino Group ◽  
Sem Images ◽  
Ft Ir ◽  
High Separation ◽  
Ft Ir Spectroscopy

Polymer composite membranes containing aniline were prepared for CO2/N2 separation. Aniline was selected for high separation performance as an additive containing both the benzene ring to interfere with gas transport and an amino group that could induce the accelerated transport of CO2 molecules. As a result, when aniline having both a benzene ring and an amino group was incorporated into polymer membranes, the selectivity was largely enhanced by the role of both gas barriers and CO2 carriers. Selective layers coated on the polysulfone were identified by scanning electron microscopy (SEM) images and the interaction with aniline in the polymer matrix was confirmed by FT-IR spectroscopy. The binding energy of oxygen in the polymer matrix was investigated by XPS, and the thermal stability of the composite membrane was confirmed by TGA.

Direct–Indirect Transition of Pressurized Two-Dimensional Halide Perovskite: Role of Benzene Ring Stack Ordering

2019 ◽  
Vol 10 (19) ◽  
pp. 5687-5693 ◽  
Author(s):  
Chaofeng Gao ◽  
Ruiping Li ◽  
Yiran Li ◽  
Rong Wang ◽  
Meng Wang ◽  
...  
Keyword(s):  
Benzene Ring ◽  
Two Dimensional ◽  
Indirect Transition ◽  
Halide Perovskite

scholarly journals Role of Surface Plasmons in the Decay of Image-Potential States on Silver Surfaces

2002 ◽  
Vol 89 (9) ◽  
Author(s):  
A. García-Lekue ◽  
J. M. Pitarke ◽  
E. V. Chulkov ◽  
A. Liebsch ◽  
P. M. Echenique
Keyword(s):  
Surface Plasmons ◽  
Silver Surfaces

The Role of Kinetics versus Thermodynamics in Surface-Assisted Ullmann Coupling on Gold and Silver Surfaces

2019 ◽  
Vol 141 (12) ◽  
pp. 4824-4832 ◽  
Author(s):  
Massimo Fritton ◽  
David A. Duncan ◽  
Peter S. Deimel ◽  
Atena Rastgoo-Lahrood ◽  
Francesco Allegretti ◽  
...  
Keyword(s):  
Silver Surfaces ◽  
Ullmann Coupling

Reaction Pathways and the Role of Solvent in the Hydrogenation of Chloronitrobenzenes

2003 ◽  
Vol 68 (10) ◽  
pp. 1819-1832 ◽  
Author(s):  
Vieroslav Krátky ◽  
Milan Králik ◽  
Alexander Kaszonyi ◽  
Magdaléna Stolcová ◽  
Lubomír Zalibera ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Benzene Ring ◽  
Catalyst Activity ◽  
Reaction Pathways ◽  
Reaction Conditions ◽  
Liquid Phase Hydrogenation ◽  
Role Of Solvent ◽  
Hplc Analyses ◽  
C Nmr

Liquid phase hydrogenation of chloronitrobenzenes to corresponding chloroanilines over Pd on carbon (Pd/C) under mild reaction conditions was studied. On the basis of 1H, 13C NMR, GC-MS and HPLC analyses of reaction mixtures, the reaction pathways were evaluated. The reduction of substrates proceeds via the formation of chloronitrosobenzenes and N-(chlorophenyl)hydroxylamines and mainly results in the formation of the chloroanilines and aniline. Aniline is formed by hydrogenolysis of chlorine (dechlorination) in benzene ring. Other compounds (mono- and disubstituted azobenzenes and azoxybenzenes) were also detected by GS-MS and HPLC (<3 mole %). The used solvent influences the reaction mixture composition and catalyst activity.

scholarly journals Evaluation of fungicidal, bactericidal and anti-tumor activities of lactones of medium and large sizes of cycles obtained from levoglucosenone

2019 ◽  
Vol 59 (9) ◽  
pp. 100-105
Author(s):  
Lily Kh. Faizullina ◽  
◽  
Yulia A. Khalilova ◽  
Artur R. Tagirov ◽  
Yulia S. Galimova ◽  
...  
Keyword(s):  
Benzene Ring ◽  
Bipolaris Sorokiniana ◽  
Pharmacological Action ◽  
Carbohydrate Residue ◽  
Fungistatic Activity ◽  
Large Size ◽  
Stage Scheme ◽  
Chiral Lactones

Medium and large lactones attract the attention of chemists by the uniqueness of their structure, versatile biological activity and limited availability. Among the secondary metabolites of this group, β-lactones are more common, then γ- and δ-lactones, classical and non-classical macrolides, polyene antibiotics, spiro-macrolides and macrolactones. On the basis of many lactones, important preparations of the most diverse pharmacological action have been obtained. Earlier, we proposed a 3-stage scheme for the synthesis of chiral lactones of medium and large size based on levoglucosenone. The lactones obtained according to this scheme contain the carbohydrate residue annelated at the ,γ -positions relative to the hydroxy group. To study the structure-activity relationship, it is necessary to establish the biological role of this carbohydrate residue in reference lactones. For this purpose, a number of lactones were obtained on the basis of levoglucosenone and their in vitro bioscreening of antifungal, antimicrobial, and antitumor activity was performed. It was found that the methyl substituent in the ω-position in the lactone and the benzene ring annulated with the lactone cycle exhibit a slight fungistatic activity towards the fungi: Bipolaris sorokiniana, Fusarium oxysporum, Rhizoctonia solani. Macrocyclic lactone and lactone annelated benzene ring showed weak cytotoxic properties against cells of LOX IMVI (melanoma) and A498, UO-31 (kidney cancer).

A Fundamental Role of the Molecular Length in Forming Metal–Organic Hybrids of Phenol Derivatives on Silver Surfaces

2021 ◽  
Vol 12 (7) ◽  
pp. 1869-1875
Author(s):  
Yangyang Han ◽  
Junbo Wang ◽  
Luying Song ◽  
Yuanjing Zheng ◽  
Youyong Li ◽  
...  
Keyword(s):  
Phenol Derivatives ◽  
Molecular Length ◽  
Metal Organic ◽  
Silver Surfaces
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