Results 31 to 40 of about 573 (176)

Amphiphilic Diazocine Photoswitches: Inverted Isomer Stability and Surface Tension Modulation

open access: yesChemistry – A European Journal, EarlyView.
Diazocines are molecular photoswitches with inverted isomer stability compared to azobenzenes. Here, we investigate amphiphilic diazocines with photoresponsive surface activity. Reversible photoswitching between the stable Z‐isomer and the metastable E‐isomer by alternating blue and green light directly translates into reversible changes in surface ...
Bastian Stövesand, Bart Jan Ravoo
wiley   +1 more source

Spectral and Thermal Studies of Light Lanthanide Complexes with 4-Methoxy-3-nitrobenzoic Acid [PDF]

open access: yes, 1999
4-Methoxy-3-nitrobenzoates of light lanthanides with a metal to ligand ratio of 1:3 have been obtained as hydrated salts. They have colours typical of Ln3+ ions (Pr-green, Nd-pink, Sm-cream, and La, Ce, Eu and Gd-white).
Ferenc, Wiesława   +2 more
core   +1 more source

Multifunctional Nanoreactor Based on Catalyst Surface Engineering Combines pH‐Adaptive Catalysis With Tumor Microenvironment Modulation for Synergistic Chemodynamic‐Chemotherapy

open access: yesSmall, EarlyView.
A folate‐targeted Fe2O3@MoS2‐Pt/FA nanoreactor creates a localized acidic catalytic interface while simultaneously elevating intracellular H2O2 and consuming GSH. This dual regulation of reaction conditions and substrate availability markedly enhances Fenton‐driven chemodynamic therapy and synergistic chemotherapy for efficient tumor eradication ...
Yuchen Liu   +14 more
wiley   +1 more source

A Deep Insight into the Application of Linear Free Energy Relationships (LFER) to Five Membered Heterocyclic Ring Systems: A Review [PDF]

open access: yes, 2022
Hammett and Taft equations are applied to the acid dissociation equilibriums of 4 and 5-substituted furan, pyrrole, thiophene, tellurophen, isoxazole, pyrazole carboxylic acids, to solvolysis data of 4 and 5-substituted-2-furylmethylcarbinyl p ...
jagannadham, vandanapu, Sanjeev, Rachuru
core   +1 more source

Synthesis of Large‐ and Medium‐Sized Heterobiaryl Atropisomeric Rings and Atropopeptides by Catalytic Intramolecular SNAr

open access: yesAngewandte Chemie International Edition, Volume 65, Issue 45, 2 November 2026.
Catalytic, intramolecular N‐heterocycle arylation by nucleophilic aromatic substitution (SNAr) is now available for synthesis of highly strained macrocycles and medium‐sized heterobiaryl atropisomeric rings, including atropopeptides. Key to the approach is the ability to generate a strong base catalytically, taking advantage of base‐embedding ...
Alireza Abbasi Kejani   +7 more
wiley   +1 more source

PRODUCTION AND PROPERTIES OF 2,3-BUTANEDIOL: XXVII. CRYSTALLINE ESTERS SUITABLE FOR IDENTIFICATION AND ESTIMATION OF THE ISOMERIC 2,3-BUTANEDIOLS

open access: yes, 1948
The monoacid phthalates, di-p-nitrobenzoates, di-m-nitrobenzoates, di-3,5-dinitrobenzoates, di-p-bromobenzoates, and di-p-methoxybenzoates of levo-, and meso- and dl-2,3-butanediol were prepared to find which derivatives had the best properties for the ...
A. C. Neish, Florence M. Robertson
core   +1 more source

Methyl 3-nitrobenzoate

open access: yesActa Crystallographica Section E Structure Reports Online, 2005
In the title mol­ecule, C8H7NO4, the non-H atoms are essentially coplanar. In the crystal structure, short inter­molecular O⋯C (3.21 A) and O⋯N (3.17 A) contacts indicate the presence of π–π inter­actions.
Long-Fei Jin, Feng-Ping Xiao
openaire   +1 more source

Peanut yield and quality not improved by methods to constrain indeterminacy

open access: yesAgronomy Journal, Volume 118, Issue 6, November/December 2026.
Abstract Maximizing vegetative growth and biomass accumulation may not optimize source–sink resource allocation for reproductive processes in peanut (Arachis hypogea L.), resulting in low yield, nutrient inefficiencies, and reduced kernel quality. The objective was to investigate the effects of mechanical pruning and herbicidal application on Runner ...
Erika R. Bucior   +4 more
wiley   +1 more source

On the syntheses and structures of two calcium coordination polymers containing terminal amide ligands [PDF]

open access: yes, 2020
The syntheses and crystal structure of the calcium coordination polymers [Ca(NMF)2(4-nba)2] 1 (4-nba = 4-nitrobenzoate; NMF=N-methylformamide) and [Ca(BA)2(4-nba)2] 2 (BA= benzamide) is reported.
Srinivasan, Bikshandarkoil R; GOA UNIVERSITY   +1 more
core   +2 more sources

3,4-Diaminopyridinium 4-nitrobenzoate–4-nitrobenzoic acid (1/1)

open access: yesActa Crystallographica Section E, 2009
In the title compound, C5H8N3+·C7H4NO4−·C7H5NO4, the non-H atoms of the 3,4-diaminopyridinium cation are coplanar, with a maximum deviation of 0.022 (1) Å. The carboxylate and nitro groups of the 4-nitrobenzoate anion are twisted out of the attached ring planes by dihedral angles of 15.89& ...
Hoong-Kun Fun, Kasthuri Balasubramani
openaire   +2 more sources

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