scholarly journals Tuning Redox Properties and Self‐Assembly of Thienoacene‐Extended Tetrathiafulvalenes

ChemPlusChem ◽  
2019 ◽  
Vol 84 (9) ◽  
pp. 1279-1287 ◽  
Author(s):  
Cecilie Lindholm Andersen ◽  
Michal Zalibera ◽  
Karol Lušpai ◽  
Mikkel A. Christensen ◽  
Denisa Darvasiová ◽  
...  
Keyword(s):  
Self Assembly ◽  
Redox Properties

Synthesis, Characterization, Investigation of Capacitance and Redox Properties of Self-assembled Phe-Phe with Ferrocene Conjugates

2021 ◽  
Author(s):  
Om Shanker Tiwari
Keyword(s):  
Nucleic Acid ◽  
Electrochemical Properties ◽  
Self Assembly ◽  
Peptide Nucleic Acid ◽  
Redox Properties ◽  
Self Assembled ◽  
Acid Unit

The synthesis, nanostructure self-assembly and electrochemical properties of a series of ferrocene conjugated peptides derived from the dipeptide Phe-Phe, nucleoside and the peptide nucleic acid unit which are covalently attached...

A copper complex formed with neurokinin B: binding stoichiometry, redox properties, self-assembly and cytotoxicity

Metallomics ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 1802-1810
Author(s):  
Yaliang Huang ◽  
Ning Xia ◽  
Miao Chen ◽  
Ping Yang ◽  
Lin Liu ◽  
...  
Keyword(s):  
Copper Complex ◽  
Self Assembly ◽  
Redox Properties ◽  
Neurokinin B ◽  
Binding Stoichiometry

This work reveals the binding stoichiometry, redox properties, self-assembly and cytotoxicity of the copper complex formed with neurokinin B.

Self-assembly of three novel entangled polyoxometalate-based coordination polymers with redox properties

2020 ◽  
pp. 121839
Author(s):  
Jun-Jie Fu ◽  
Jian-Gang Wo ◽  
Yu-Hui Luo ◽  
A-Di Xie ◽  
Ji Wu ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Self Assembly ◽  
Redox Properties

Thioacetate-Functionalized Fullerene: Redox Properties and Self-Assembly on the Au(111) Surface

2012 ◽  
Vol 160 (1) ◽  
pp. H28-H32 ◽  
Author(s):  
Piotr Piotrowski ◽  
Joanna Pawłowska ◽  
Barbara Pałys ◽  
Sławomir Sęk ◽  
Renata Bilewicz ◽  
...  
Keyword(s):  
Self Assembly ◽  
Redox Properties

Exploring the electronic properties and cation complexation of polyoxoaurates [AuIII4X4Om]n−(X = SiIV, PV, GeIV, AsV, and SeIV) using quantum chemical calculations

2015 ◽  
Vol 17 (17) ◽  
pp. 11521-11526 ◽  
Author(s):  
Caixia Wu ◽  
Tengying Ma ◽  
Likai Yan ◽  
Ting Zhang ◽  
Zhongmin Su
Keyword(s):  
Electronic Properties ◽  
Quantum Chemical Calculations ◽  
Self Assembly ◽  
Quantum Chemical ◽  
Redox Properties ◽  
Ion Recognition ◽  
Cation Complexation

Quantum chemical calculations show that the heteropolyoxoaurates are expected to play a role in self-assembly characteristics, ion recognition and guest-switchable redox properties.

In vitro and in vivo polysaccharides assembly: ultrastructural and cytochemical study of growing plant cell wall components.

1978 ◽  
Vol 36 (2) ◽  
pp. 434-435
Author(s):  
D. Reis ◽  
B. Vian ◽  
J. C. Roland
Keyword(s):  
Cell Wall ◽  
Self Assembly ◽  
Plant Cell Wall ◽  
Higher Plants ◽  
Three Dimensional ◽  
Cytochemical Study ◽  
Wall Components

Wall morphogenesis in higher plants is a problem still open to controversy. Until now the possibility of a transmembrane control and the involvement of microtubules were mostly envisaged. Self-assembly processes have been observed in the case of walls of Chlamydomonas and bacteria. Spontaneous gelling interactions between xanthan and galactomannan from Ceratonia have been analyzed very recently. The present work provides indications that some processes of spontaneous aggregation could occur in higher plants during the formation and expansion of cell wall.Observations were performed on hypocotyl of mung bean (Phaseolus aureus) for which growth characteristics and wall composition have been previously defined.In situ, the walls of actively growing cells (primary walls) show an ordered three-dimensional organization (fig. 1). The wall is typically polylamellate with multifibrillar layers alternately transverse and longitudinal. Between these layers intermediate strata exist in which the orientation of microfibrils progressively rotates. Thus a progressive change in the morphogenetic activity occurs.

The Nature of Rapidly Extracted Phycocyanin from the Blue-Green Alga Plectonema Boryanum

1971 ◽  
Vol 29 ◽  
pp. 366-367
Author(s):  
M. Kessel ◽  
R. MacColl
Keyword(s):  
Self Assembly ◽  
Analytical Ultracentrifugation ◽  
Uranyl Acetate ◽  
The Self ◽  
Major Protein ◽  
Subunit Structure ◽  
Blue Green Alga ◽  
Thin Sections ◽  
Blue Green Algae ◽  
Cacodylate Buffer

The major protein of the blue-green algae is the biliprotein, C-phycocyanin (Amax = 620 nm), which is presumed to exist in the cell in the form of distinct aggregates called phycobilisomes. The self-assembly of C-phycocyanin from monomer to hexamer has been extensively studied, but the proposed next step in the assembly of a phycobilisome, the formation of 19s subunits, is completely unknown. We have used electron microscopy and analytical ultracentrifugation in combination with a method for rapid and gentle extraction of phycocyanin to study its subunit structure and assembly.To establish the existence of phycobilisomes, cells of P. boryanum in the log phase of growth, growing at a light intensity of 200 foot candles, were fixed in 2% glutaraldehyde in 0.1M cacodylate buffer, pH 7.0, for 3 hours at 4°C. The cells were post-fixed in 1% OsO4 in the same buffer overnight. Material was stained for 1 hour in uranyl acetate (1%), dehydrated and embedded in araldite and examined in thin sections.

Video real-time imaging of artificial membranes during freeze-drying by cryo-electron microscopy

1988 ◽  
Vol 46 ◽  
pp. 16-17
Author(s):  
Alan S. Rudolph ◽  
Ronald R. Price
Keyword(s):  
Real Time ◽  
Self Assembly ◽  
Freeze Drying ◽  
Video Capture ◽  
Drying Process ◽  
Artificial Membranes ◽  
The Past ◽  
Cryo Electron Microscopy ◽  
Spherical Structures ◽  
Capture Techniques

We have employed cryoelectron microscopy to visualize events that occur during the freeze-drying of artificial membranes by employing real time video capture techniques. Artificial membranes or liposomes which are spherical structures within internal aqueous space are stabilized by water which provides the driving force for spontaneous self-assembly of these structures. Previous assays of damage to these structures which are induced by freeze drying reveal that the two principal deleterious events that occur are 1) fusion of liposomes and 2) leakage of contents trapped within the liposome [1]. In the past the only way to access these events was to examine the liposomes following the dehydration event. This technique allows the event to be monitored in real time as the liposomes destabilize and as water is sublimed at cryo temperatures in the vacuum of the microscope. The method by which liposomes are compromised by freeze-drying are largely unknown. This technique has shown that cryo-protectants such as glycerol and carbohydrates are able to maintain liposomal structure throughout the drying process.

Biomimetic materials: An introduction

1992 ◽  
Vol 50 (2) ◽  
pp. 1020-1021 ◽  
Author(s):  
M. Sarikaya ◽  
J. T. Staley ◽  
I. A. Aksay
Keyword(s):  
Self Assembly ◽  
Structural Control ◽  
Hierarchical Structures ◽  
Ceramic Composites ◽  
Advanced Materials ◽  
Length Scale ◽  
Spider Webs ◽  
Biomimetic Materials ◽  
Synthetic Materials ◽  
All Ceramic

Biomimetics is an area of research in which the analysis of structures and functions of natural materials provide a source of inspiration for design and processing concepts for novel synthetic materials. Through biomimetics, it may be possible to establish structural control on a continuous length scale, resulting in superior structures able to withstand the requirements placed upon advanced materials. It is well recognized that biological systems efficiently produce complex and hierarchical structures on the molecular, micrometer, and macro scales with unique properties, and with greater structural control than is possible with synthetic materials. The dynamism of these systems allows the collection and transport of constituents; the nucleation, configuration, and growth of new structures by self-assembly; and the repair and replacement of old and damaged components. These materials include all-organic components such as spider webs and insect cuticles (Fig. 1); inorganic-organic composites, such as seashells (Fig. 2) and bones; all-ceramic composites, such as sea urchin teeth, spines, and other skeletal units (Fig. 3); and inorganic ultrafine magnetic and semiconducting particles produced by bacteria and algae, respectively (Fig. 4).

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