Entanglement Molecular Weight

Rheological Properties of DNA Molecules in Solution: Molecular Weight and Entanglement Influences

Molecular weight, stiffness, temperature, and polymer and ionic concentrations are known to widely influence the viscosity of polymer solutions. Additionally, polymer molecular weight—which is related to its dimensions in solution—is one of its most important characteristics. In this communication, low molecular weight DNA from salmon sperm was purified and then studied in solutions in a wide c...

Apparent Reversal of Molecular Orbitals Reveals Entanglement.

The frontier orbital sequence of individual dicyanovinyl-substituted oligothiophene molecules is studied by means of scanning tunneling microscopy. On NaCl/Cu(111), the molecules are neutral, and the two lowest unoccupied molecular states are observed in the expected order of increasing energy. On NaCl/Cu(311), where the molecules are negatively charged, the sequence of two observed molecular o...

Rheological Method for Determining Molecular Weight and Molecular Weight Distribution

Molecular Quantum Entanglement in Functionalized Semiconductor Nanostructures

(Dated: March 12, 2004) The feasibility of creating molecular quantum entanglement in functionalized semiconductor nanostructures is computationally demonstrated. Entangled hole states, localized deep in the semiconductor band gap, are generated by electron-hole pair separation after photoexcitation of molecular surface complexes. The approach is illustrated for model arrays of catechol molecul...

Allovalency: A Case of Molecular Entanglement

Imagine being captured by a giant octopus which, though capable of holding you with only one tentacle at a time, tries to keep you from swimming away. As you break hold of one tentacle and start moving, you will find many more wiggling precariously ahead of you. Chances are you will have to spend a good amount of time in a dangerous proximity of the creature’s mouth. It appears that some molecu...