Photocontrolled Dopamine Polymerization on DNA Origami with Nanometer Resolution.
Angew Chem Int Ed Engl
; 59(15): 6144-6149, 2020 04 06.
Article
em En
| MEDLINE
| ID: mdl-31750608
ABSTRACT
Temporal and spatial control over polydopamine formation on the nanoscale can be achieved by installing an irradiation-sensitive polymerization system on DNA origami. Precisely distributed G-quadruplex structures on the DNA template serve as anchors for embedding the photosensitizer protoporphyrin IX, which-upon irradiation with visible light-induces the multistep oxidation of dopamine to polydopamine, producing polymeric structures on designated areas within the origami framework. The photochemical polymerization process allows exclusive control over polydopamine layer formation through the simple on/off switching of the light source. The obtained polymer-DNA hybrid material shows significantly enhanced stability, paving the way for biomedical and chemical applications that are typically not possible owing to the sensitivity of DNA.
Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
DNA
/
Dopamina
/
Nanoestruturas
/
Processos Fotoquímicos
/
Polimerização
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Alemanha