A Highly Efficient Approach to the Self-Assembly of Hexagonal Cavity-Cored Tris[2]pseudorotaxanes from Several Components via Multiple Noncovalent Interactions

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.

Download Full-text

Charge-Assisted Hydrogen Bonding and Other Noncovalent Interactions in the Self-Assembly of the Organometallic Building Block [(η6-hydroquinone)Rh(P(OPh)3)2]+with a Range of Counteranions

Organometallics ◽

10.1021/om0604425 ◽

2006 ◽

Vol 25 (22) ◽

pp. 5276-5285 ◽

Cited By ~ 19

Author(s):

Seung Uk Son ◽

Jeffrey A. Reingold ◽

Gene B. Carpenter ◽

Paul T. Czech ◽

Dwight A. Sweigart

Keyword(s):

Hydrogen Bonding ◽

Self Assembly ◽

Building Block ◽

Noncovalent Interactions ◽

The Self

Download Full-text

Synthesis of dynamic imine macrocyclic supramolecular polymers via synchronized self-assembly based on dynamic covalent bonds and noncovalent interactions

Chemical Communications ◽

10.1039/d0cc02991b ◽

2020 ◽

Vol 56 (65) ◽

pp. 9288-9291 ◽

Cited By ~ 1

Author(s):

Zhenfeng He ◽

Yufeng Huo ◽

Chao Wang ◽

Duo Pan ◽

Binbin Dong ◽

...

Keyword(s):

Self Assembly ◽

Noncovalent Interactions ◽

Single Step ◽

The Self ◽

Supramolecular Polymers ◽

Aggregation Process ◽

Covalent Bonds

The preparation of host imine macrocycles and the self-assembly aggregation process are merged into one single step for self-assembly to form dynamic imine macrocyclic supramolecular polymers.

Download Full-text

Balancing Noncovalent Interactions in the Self-Assembly of Nonplanar Aromatic Carboxylic Acid MOF Linkers at the Solution/Solid Interface: HOPG vs Au(111)

Langmuir ◽

10.1021/acs.langmuir.9b00204 ◽

2019 ◽

Vol 35 (15) ◽

pp. 5271-5280 ◽

Cited By ~ 4

Author(s):

Kristen N. Johnson ◽

Matthew J. Hurlock ◽

Qiang Zhang ◽

K. W. Hipps ◽

Ursula Mazur

Keyword(s):

Carboxylic Acid ◽

Self Assembly ◽

Noncovalent Interactions ◽

The Self ◽

Aromatic Carboxylic Acid ◽

Solid Interface

Download Full-text

Urethane tetrathiafulvalene derivatives: synthesis, self-assembly and electrochemical properties

Beilstein Journal of Organic Chemistry ◽

10.3762/bjoc.11.255 ◽

2015 ◽

Vol 11 ◽

pp. 2343-2349 ◽

Cited By ~ 2

Author(s):

Xiang Sun ◽

Guoqiao Lai ◽

Zhifang Li ◽

Yuwen Ma ◽

Xiao Yuan ◽

...

Keyword(s):

Self Assembly ◽

Driving Forces ◽

Noncovalent Interactions ◽

Electronic Conductivity ◽

The Self ◽

Stacking Interactions ◽

X Ray Diffraction ◽

X Ray ◽

Hydrogen Bond Interactions ◽

Better Than

This paper reports the self-assembly of two new tetrathiafulvalene (TTF) derivatives that contain one or two urethane groups. The formation of nanoribbons was evidenced by scanning electron microscopy (SEM) and X-ray diffraction (XRD), which showed that the self-assembly ability of T 1 was better than that of T 2 . The results revealed that more urethane groups in a molecule did not necessarily instigate self-assembly. UV–vis and FTIR spectra were measured to explore noncovalent interactions. The driving forces for self-assembly of TTF derivatives were mainly hydrogen bond interactions and π–π stacking interactions. The electronic conductivity of the T 1 and T 2 films was tested by a four-probe method.

Download Full-text

Involvement of unusual noncovalent interactions in the self-assembly of cucurbit[6]uril with [CdCl 4 ] 2− anions

Chinese Chemical Letters ◽

10.1016/j.cclet.2015.10.007 ◽

2016 ◽

Vol 27 (1) ◽

pp. 173-177 ◽

Cited By ~ 9

Author(s):

Xiao-Wei Cui ◽

Shi-Yan Chen ◽

Chuan-Zeng Wang ◽

Wen-Xuan Zhao ◽

Tao Sun ◽

...

Keyword(s):

Self Assembly ◽

Noncovalent Interactions ◽

The Self

Download Full-text

The self-assembly of benzyl alcohol derived deep-cavity cavitands: a new, highly efficient moiety for irreversible assemblies?

Chemical Communications ◽

10.1039/a908144e ◽

2000 ◽

pp. 363-364 ◽

Cited By ~ 21

Author(s):

Corinne L. D. Gibb ◽

Edwin D. Stevens ◽

Bruce C. Gibb

Keyword(s):

Benzyl Alcohol ◽

Self Assembly ◽

The Self ◽

Deep Cavity ◽

Highly Efficient

Download Full-text

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

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100065870 ◽

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.

Download Full-text

Interrelationship of the cellular distribution and secretion of regular structure (RS) protein in Bacillus licheniformis nm 105

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100123969 ◽

1992 ◽

Vol 50 (1) ◽

pp. 712-713

Author(s):

Xiaorong Zhu ◽

Richard McVeigh ◽

Bijan K. Ghosh

Keyword(s):

Alkaline Phosphatase ◽

Bacillus Licheniformis ◽

Self Assembly ◽

Gel Electrophoresis ◽

Culture Supernatant ◽

Regular Structure ◽

The Self ◽

Cellular Distribution ◽

Structural Protein ◽

Laboratory Cultures

A mutant of Bacillus licheniformis 749/C, NM 105 exhibits some notable properties, e.g., arrest of alkaline phosphatase secretion and overexpression and hypersecretion of RS protein. Although RS is known to be widely distributed in many microbes, it is rarely found, with a few exceptions, in laboratory cultures of microorganisms. RS protein is a structural protein and has the unusual properties to form aggregate. This characteristic may have been responsible for the self assembly of RS into regular tetragonal structures. Another uncommon characteristic of RS is that enhanced synthesis and secretion which occurs when the cells cease to grow. Assembled RS protein with a tetragonal structure is not seen inside cells at any stage of cell growth including cells in the stationary phase of growth. Gel electrophoresis of the culture supernatant shows a very large amount of RS protein in the stationary culture of the B. licheniformis. It seems, Therefore, that the RS protein is cotranslationally secreted and self assembled on the envelope surface.

Download Full-text