Related Experiment Video
Updated: May 10, 2026

07:04
Synthesis of Strong Adhesive Hydrogel, Gelatin O-Nitrosobenzaldehyde
Published on: November 11, 2022
Quadruply hydrogen bonding modules as highly selective nanoscale adhesive agents
Yagang Zhang1, Cyrus A Anderson, Steven C Zimmerman
1Department of Chemistry, 600 S. Mathews Avenue, University of Illinois, Urbana, Illinois 61801, USA.
Organic Letters
|July 3, 2013
Summary
Researchers created functional surfaces by attaching DNA base analogues to glass slides. These surfaces can be bonded together using complementary polystyrene, minimizing unwanted sticking with fluorinated coatings.
Area of Science:
- Biomaterials Science
- Surface Chemistry
- Molecular Engineering
Background:
- Developing functional surfaces is crucial for advanced applications.
- DNA base pairing offers specific molecular recognition capabilities.
- Minimizing nonspecific adhesion is key for surface-based technologies.
Purpose of the Study:
- To create functional surfaces using DNA base analogues for reversible adhesion.
- To investigate the use of complementary recognition units for surface assembly.
- To evaluate methods for reducing nonspecific adhesion on functionalized surfaces.
Main Methods:
- Covalent immobilization of DNA base analogues (DAN, DeUG, UPy) onto glass slides.
- Development of functionalized polystyrene with complementary recognition units.
- Application of fluorinated alkane coatings to minimize nonspecific adhesion.
Main Results:
- Successfully created functional glass surfaces displaying DNA base analogues.
- Demonstrated reversible surface-to-surface adhesion using complementary polystyrene.
- Achieved significant reduction in nonspecific adhesion through fluorinated surface treatments.
Conclusions:
- DNA base analogue functionalization provides a viable strategy for creating adhesive surfaces.
- Complementary recognition units enable controlled and reversible surface assembly.
- Fluorinated coatings effectively mitigate nonspecific interactions, enhancing surface functionality.
Related Concept Videos
Hydrogen Bonds
A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
Hydrogen Bonds
Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared.
Noncovalent Attractions in Biomolecules
Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Cohesion
Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a surface,...
On a surface,...
Introduction to Chemical Bonds
Chemical Bonds
The electrons of the outermost energy level determine the energetic stability of the atom and its tendency to form chemical bonds with other atoms. The innermost electron shell has a maximum capacity of two electrons, but the next two electron shells can each have a maximum of eight electrons. This is known as the octet rule, which states that, with the exception of the innermost shell, atoms are most stable energetically when they have eight electrons in their valence shell, the...
The electrons of the outermost energy level determine the energetic stability of the atom and its tendency to form chemical bonds with other atoms. The innermost electron shell has a maximum capacity of two electrons, but the next two electron shells can each have a maximum of eight electrons. This is known as the octet rule, which states that, with the exception of the innermost shell, atoms are most stable energetically when they have eight electrons in their valence shell, the...

