Effect of solvent, pH and metal ions on the self-assembly process and optical properties of an A–π–D–π–A type triphenylamine carboxylic acid derivative

2016 ◽  
Vol 4 (14) ◽  
pp. 2990-3001 ◽  
Author(s):  
Lin Kong ◽  
Yun Liu ◽  
Hui Wang ◽  
Xiao-he Tian ◽  
Qi-yu Chen ◽  
...  
Keyword(s):  
Optical Properties ◽  
Carboxylic Acid ◽  
Metal Ions ◽  
Acid Derivative ◽  
Self Assembly ◽  
Metal Ion ◽  
The Self ◽  
Assembly Process ◽  
Effect Of Solvent ◽  
Carboxylic Acid Derivative

The effect of solvent, pH and metal ion on the morphology and optical properties of a carboxylic-acid derivative was researched.

scholarly journals Third-Order Nonlinear Optical Properties of a Carboxylic Acid Derivative

2018 ◽  
Vol 65 (3) ◽  
pp. 739-749 ◽  
Author(s):  
Clodoaldo Valverde ◽  
Sizelizio Alves de Lima e Castro ◽  
Gabriela Rodrigues Vaz ◽  
Jorge Luiz de Almeida Ferreira ◽  
Basílio Baseia ◽  
...  
Keyword(s):  
Optical Properties ◽  
Carboxylic Acid ◽  
Acid Derivative ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Third Order ◽  
Carboxylic Acid Derivative

Construction of homochiral alkaline–lanthanide heteronuclear helicates with Na+-selective bonding in the self-assembly process

2019 ◽  
Vol 48 (39) ◽  
pp. 14595-14599 ◽  
Author(s):  
Ge Li ◽  
Li Wang ◽  
Qingxin Han ◽  
Weisheng Liu
Keyword(s):  
Metal Ions ◽  
Self Assembly ◽  
The Self ◽  
Assembly Process

A supramolecular approach to distinguish Na+ from other biologically important metal ions.

scholarly journals Influence of Metal Ions on Model Protoamphiphilic Vesicular Systems: Insights from Laboratory and Analogue Studies

Life ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1413
Author(s):  
Manesh Prakash Joshi ◽  
Luke Steller ◽  
Martin J. Van Kranendonk ◽  
Sudha Rajamani
Keyword(s):  
Fatty Acid ◽  
Metal Ions ◽  
Self Assembly ◽  
Metal Ion ◽  
Hot Spring ◽  
Divalent Cations ◽  
Microscopic Analysis ◽  
Monovalent Cation ◽  
The Self ◽  
Vesicle Formation

Metal ions strongly affect the self-assembly and stability of membranes composed of prebiotically relevant amphiphiles (protoamphiphiles). Therefore, evaluating the behavior of such amphiphiles in the presence of ions is a crucial step towards assessing their potential as model protocell compartments. We have recently reported vesicle formation by N-acyl amino acids (NAAs), an interesting class of protoamphiphiles containing an amino acid linked to a fatty acid via an amide linkage. Herein, we explore the effect of ions on the self-assembly and stability of model N-oleoyl glycine (NOG)-based membranes. Microscopic analysis showed that the blended membranes of NOG and Glycerol 1-monooleate (GMO) were more stable than pure NOG vesicles, both in the presence of monovalent and divalent cations, with the overall vesicle stability being 100-fold higher in the presence of a monovalent cation. Furthermore, both pure NOG and NOG + GMO mixed systems were able to self-assemble into vesicles in natural water samples containing multiple ions that were collected from active hot spring sites. Our study reveals that several aspects of the metal ion stability of NAA-based membranes are comparable to those of fatty acid-based systems, while also confirming the robustness of compositionally heterogeneous membranes towards high metal ion concentrations. Pertinently, the vesicle formation by NAA-based systems in terrestrial hot spring samples indicates the conduciveness of these low ionic strength freshwater systems for facilitating prebiotic membrane-assembly processes. This further highlights their potential to serve as a plausible niche for the emergence of cellular life on the early Earth.

scholarly journals Self-Assembled Nanomaterials Based on Complementary Sn(IV) and Zn(II)-Porphyrins, and Their Photocatalytic Degradation for Rhodamine B Dye

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3598
Author(s):  
Nirmal K. Shee ◽  
Hee-Joon Kim
Keyword(s):  
Aqueous Solution ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Self Assembly ◽  
The Self ◽  
Assembly Process ◽  
Absorption Bands ◽  
Ligand Coordination ◽  
Rhodamine B Dye ◽  
Metal Ligand

A series of porphyrin triads (1–6), based on the reaction of trans-dihydroxo-[5,15-bis(3-pyridyl)-10,20-bis(phenyl)porphyrinato]tin(IV) (SnP) with six different phenoxy Zn(II)-porphyrins (ZnLn), was synthesized. The cooperative metal–ligand coordination of 3-pyridyl nitrogens in the SnP with the phenoxy Zn(II)-porphyrins, followed by the self-assembly process, leads to the formation of nanostructures. The red-shifts and remarkable broadening of the absorption bands in the UV–vis spectra for the triads in CHCl3 indicate that nanoaggregates may be produced in the self-assembly process of these triads. The emission intensities of the triads were also significantly reduced due to the aggregation. Microscopic analyses of the nanostructures of the triads reveal differences due to the different substituents on the axial Zn(II)-porphyrin moieties. All these nanomaterials exhibited efficient photocatalytic performances in the degradation of rhodamine B (RhB) dye under visible light irradiation, and the degradation efficiencies of RhB in aqueous solution were observed to be 72~95% within 4 h. In addition, the efficiency of the catalyst was not impaired, showing excellent recyclability even after being applied for the degradation of RhB in up to five cycles.

scholarly journals Metal Oxide-Related Dendritic Structures: Self-Assembly and Applications for Sensor, Catalysis, Energy Conversion and Beyond

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1686
Author(s):  
Ruohong Sui ◽  
Paul A. Charpentier ◽  
Robert A. Marriott
Keyword(s):  
Metal Oxide ◽  
Energy Conversion ◽  
Self Assembly ◽  
Hierarchical Structures ◽  
The Self ◽  
Assembly Process ◽  
Electronic Noses ◽  
Dendritic Nanostructures ◽  
Energy Conversion And Storage ◽  
The Aesthetic

In the past two decades, we have learned a great deal about self-assembly of dendritic metal oxide structures, partially inspired by the nanostructures mimicking the aesthetic hierarchical structures of ferns and corals. The self-assembly process involves either anisotropic polycondensation or molecular recognition mechanisms. The major driving force for research in this field is due to the wide variety of applications in addition to the unique structures and properties of these dendritic nanostructures. Our purpose of this minireview is twofold: (1) to showcase what we have learned so far about how the self-assembly process occurs; and (2) to encourage people to use this type of material for drug delivery, renewable energy conversion and storage, biomaterials, and electronic noses.

Controllable Synthesis of Cobalt Porphyrin Nanocrystals through Micelle Confinement Self-Assembly

MRS Advances ◽  
2020 ◽  
Vol 5 (42) ◽  
pp. 2147-2155
Author(s):  
Sudi Chen ◽  
Xitong Ren ◽  
Shufang Tian ◽  
Jiajie Sun ◽  
Feng Bai
Keyword(s):  
Self Assembly ◽  
Water Oxidation ◽  
Separation Efficiency ◽  
Noncovalent Interactions ◽  
Building Blocks ◽  
The Self ◽  
Hexagonal Prism ◽  
Assembly Process ◽  
Surfactant Micelles ◽  
Cobalt Porphyrin

AbstractThe self-assembly of optically active building blocks into functional nanocrystals as high-activity photocatalysts is a key in the field of photocatalysis. Cobalt porphyrin with abundant catalytic properties is extensively studied in photocatalytic water oxidation and CO2 reduction. Here, we present the fabrication of cobalt porphyrin nanocrystals through a surfactant-assisted interfacial self-assembly process using Co-tetra(4-pyridyl) porphyrin as building block. The self-assembly process relies on the combined noncovalent interactions such as π-π stacking and axial Co-N coordination between individual porphyrin molecules within surfactant micelles. Tuning different reaction conditions (temperature, the ratio of co-solvent DMF) and types of surfactant, various nanocrystals with well-defined 1D to 3D morphologies such as nanowires, nanorods and nano hexagonal prism were obtained. Due to the ordered accumulation of molecules, the nanocrystals exhibit the properties of the enhanced capability of visible light capture and can conduce to improve the transport and separation efficiency of the photogenerated carriers, which is important for photocatalysis. Further studies of photocatalytic CO2 reduction are being performed to address the relationship between the size and shape of the nanocrystals with the photocatalytic activity.

scholarly journals A Novel Potent Indazole Carboxylic Acid Derivative Blocks Spermatogenesis and Is Contraceptive in Rats after a Single Oral Dose1

2008 ◽  
Vol 78 (6) ◽  
pp. 1127-1138 ◽  
Author(s):  
Joseph S. Tash ◽  
Barbara Attardi ◽  
Sheri A. Hild ◽  
Ramappa Chakrasali ◽  
Sudhakar R. Jakkaraj ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Acid Derivative ◽  
Carboxylic Acid Derivative

scholarly journals The Effects of the Indazole Carboxylic Acid Derivative, Tolnidamine, on Testicular Function: I

1985 ◽  
Vol 6 (3) ◽  
pp. 171-178 ◽  
Author(s):  
IRVING M. SPITZ ◽  
GLEN L. GUNSALUS ◽  
JENNIE P. MATHER ◽  
ROSEMARIE THAU ◽  
C. WAYNE BARDIN
Keyword(s):  
Carboxylic Acid ◽  
Acid Derivative ◽  
Testicular Function ◽  
Carboxylic Acid Derivative
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