scholarly journals Self-assembling peptide semiconductors

Science ◽  
2017 ◽  
Vol 358 (6365) ◽  
pp. eaam9756 ◽  
Author(s):  
Kai Tao ◽  
Pandeeswar Makam ◽  
Ruth Aizen ◽  
Ehud Gazit
Keyword(s):  
Hydrogen Bonding ◽  
Biological Systems ◽  
Band Gaps ◽  
Short Peptides ◽  
Promising Candidate ◽  
Supramolecular Materials ◽  
Self Assembling ◽  
The Family ◽  
Nanoscale Semiconductors ◽  
Inorganic Semiconductor

Semiconductors are central to the modern electronics and optics industries. Conventional semiconductive materials bear inherent limitations, especially in emerging fields such as interfacing with biological systems and bottom-up fabrication. A promising candidate for bioinspired and durable nanoscale semiconductors is the family of self-assembled nanostructures comprising short peptides. The highly ordered and directional intermolecular π-π interactions and hydrogen-bonding network allow the formation of quantum confined structures within the peptide self-assemblies, thus decreasing the band gaps of the superstructures into semiconductor regions. As a result of the diverse architectures and ease of modification of peptide self-assemblies, their semiconductivity can be readily tuned, doped, and functionalized. Therefore, this family of electroactive supramolecular materials may bridge the gap between the inorganic semiconductor world and biological systems.

Hydrogen Bonding: From Biological Systems To Interstellar Medium

2018 ◽  
Author(s):  
Emmanuel E. Etim ◽  
Prasanta Gorai ◽  
Ankan Das ◽  
Sandip K. Chakrabarti ◽  
Elangannan Arunan
Keyword(s):  
Hydrogen Bonding ◽  
Interstellar Medium ◽  
Biological Systems

Hydrophobic interaction and hydrogen bonding driving the self-assembling of quinoa protein and flavonoids

2021 ◽  
pp. 106807
Author(s):  
Kang Liu ◽  
Xue-Qiang Zha ◽  
Qiang-Ming Li ◽  
Li-Hua Pan ◽  
Jian-Ping Luo
Keyword(s):  
Hydrogen Bonding ◽  
Hydrophobic Interaction ◽  
The Self ◽  
Self Assembling

CAN SEMIEMPIRICAL QUANTUM MODELS CALCULATE THE BINDING ENERGY OF HYDROGEN BONDING FOR BIOLOGICAL SYSTEMS?

2009 ◽  
Vol 08 (04) ◽  
pp. 691-711 ◽  
Author(s):  
FENG FENG ◽  
HUAN WANG ◽  
WEI-HAI FANG ◽  
JIAN-GUO YU
Keyword(s):  
Hydrogen Bonding ◽  
Amino Acid ◽  
Amino Acid Residue ◽  
Density Functional ◽  
Biological Systems ◽  
Binding Energies ◽  
Semiempirical Model ◽  
Hydrogen Bonded Systems ◽  
High Level ◽  
Hydrogen Bonded

A modified semiempirical model named RM1BH, which is based on RM1 parameterizations, is proposed to simulate varied biological hydrogen-bonded systems. The RM1BH is formulated by adding Gaussian functions to the core–core repulsion items in original RM1 formula to reproduce the binding energies of hydrogen bonding of experimental and high-level computational results. In the parameterizations of our new model, 35 base-pair dimers, 18 amino acid residue dimers, 14 dimers between a base and an amino acid residue, and 20 other multimers were included. The results performed with RM1BH were compared with experimental values and the benchmark density-functional (B3LYP/6-31G**/BSSE) and Möller–Plesset perturbation (MP2/6-31G**/BSSE) calculations on various biological hydrogen-bonded systems. It was demonstrated that RM1BH model outperforms the PM3 and RM1 models in the calculations of the binding energies of biological hydrogen-bonded systems by very close agreement with the values of both high-level calculations and experiments. These results provide insight into the ideas, methods, and views of semiempirical modifications to investigate the weak interactions of biological systems.

Investigation into the role of the hydrogen bonding network in cyclodextrin-based self-assembling mesophases

2014 ◽  
Vol 2 (25) ◽  
pp. 4928-4936 ◽  
Author(s):  
Sandra Ward ◽  
Oliver Calderon ◽  
Ping Zhang ◽  
Matthew Sobchuk ◽  
Samantha N. Keller ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Self Organized ◽  
Self Assembling ◽  
Bond Network ◽  
Hydrogen Bonding Network

The ability to form self-organized thermotropic mesophases of amphiphilic cyclodextrins correlates well with their ability to establish an intermolecular H-bond network.

scholarly journals Supramolecular silicone coating capable of strong substrate bonding, readily damage healing, and easy oil sliding

2019 ◽  
Vol 5 (11) ◽  
pp. eaaw5643 ◽  
Author(s):  
Meijin Liu ◽  
Zhaoyue Wang ◽  
Peng Liu ◽  
Zuankai Wang ◽  
Haimin Yao ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Polymer Coatings ◽  
Molecular Engineering ◽  
Organic Liquids ◽  
Molecular Configuration ◽  
Supramolecular Materials ◽  
Siloxane Oligomers ◽  
Damage Healing ◽  
Oil Repellent ◽  
Liquid Repellency

Polymer coatings with a combined competence of strong bonding to diverse substrates, broad liquid repellency, and readily damage healing are in substantial demand in a range of applications. In this work, we develop damage-healable, oil-repellent supramolecular silicone (DOSS) coatings to harvest abovementioned properties by molecular engineering siloxane oligomers that can self-assemble onto coated substrates via multivalent hydrogen bonding. In addition to the readily damage-healing properties provided by reversible association/dissociation of hydrogen bonding motifs, the unique molecular configuration of the siloxane oligomers on coated substrates enables both robust repellency to organic liquids and strong bonding to various substrates including metals, plastics, and even Teflon. We envision that not only DOSS coatings can be applied in a range of energy, environmental, and biomedical applications that require long-term services in harsh environmental conditions but also the design strategy of the oligomers can be adopted in the development of supramolecular materials with desirable multifunctionality.

Beyond Fmoc: a review of aromatic peptide capping groups

2020 ◽  
Vol 8 (5) ◽  
pp. 863-877 ◽  
Author(s):  
Adam D. Martin ◽  
Pall Thordarson
Keyword(s):  
Drug Delivery ◽  
Tissue Engineering ◽  
Structure And Function ◽  
Short Peptides ◽  
Peptide Structure ◽  
Energy Materials ◽  
Self Assembling ◽  
And Function

Self-assembling short peptides have widespread applications in energy materials, tissue engineering, sensing and drug delivery. In this review we discuss the effect of functional N-terminal capping groups on peptide structure and function.

First-Principles Study on the Electronic Structure of Bulk and Single-Layer Boehmite

NANO ◽  
2018 ◽  
Vol 13 (12) ◽  
pp. 1850138
Author(s):  
Seungwook Son ◽  
Dongwook Kim ◽  
Sutassana Na-Phattalung ◽  
Jisoon Ihm
Keyword(s):  
Hydrogen Bonding ◽  
First Principles ◽  
Single Layer ◽  
Layered Materials ◽  
Two Dimensional ◽  
First Principles Calculations ◽  
Promising Candidate ◽  
Electronic Band ◽  
2D Layered Materials ◽  
Electronic Band Structures

Two-dimensional (2D) or layered materials have a great potential for applications in energy storage, catalysis, optoelectronics and gas separation. Fabricating novel 2D or quasi-2D layered materials composed of relatively abundant and inexpensive atomic species is an important issue for practical usage in industry. Here, we suggest the layer-structured AlOOH (Boehmite) as a promising candidate for such applications. Boehmite is a well-known layer-structured material and a single-layer can be exfoliated from the bulk boehmite by breaking the interlayer hydrogen bonding. We study atomic and electronic band structures of both bulk and single-layer boehmite, and also obtain the single-layer exfoliation energy using first-principles calculations.

Croconamides: a new dual hydrogen bond donating motif for anion recognition and organocatalysis

2017 ◽  
Vol 15 (13) ◽  
pp. 2784-2790 ◽  
Author(s):  
Anne Jeppesen ◽  
Bjarne E. Nielsen ◽  
Dennis Larsen ◽  
Olivia M. Akselsen ◽  
Theis I. Sølling ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Anion Recognition ◽  
Anion Receptors ◽  
The Family

We introduce bis-aryl croconamides as a new member in the family of dual hydrogen bonding anion receptors.

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