Switching bonds in a DNA gel: an all-DNA vitrimer.
Phys Rev Lett
; 114(7): 078104, 2015 Feb 20.
Article
en En
| MEDLINE
| ID: mdl-25763976
ABSTRACT
We design an all-DNA system that behaves like vitrimers, innovative plastics with self-healing and stress-releasing properties. The DNA sequences are engineered to self-assemble first into tetra- and bifunctional units which, upon further cooling, bind to each other forming a fully bonded network gel. An innovative design of the binding regions of the DNA sequences, exploiting a double toehold-mediated strand displacement, generates a network gel which is able to reshuffle its bonds, retaining at all times full bonding. As in vitrimers, the rate of bond switching can be controlled via a thermally activated catalyst, which in the present design is very short DNA strands.
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Banco de datos:
MEDLINE
Asunto principal:
ADN
/
Geles
Idioma:
En
Año:
2015
Tipo del documento:
Article