Trans-membrane fluorescence enhancement by carbon dots: ionic interactions and energy transfer

We report on trans-membrane interactions between blue-emitting carbon dots (CDs) and fluorescein. Hydrophobic CDs with a positive surface charge are embedded as-synthesized in the lipophilic sheet of the bilayer membrane of large synthetic phospholipid vesicles. The vesicles are prepared by mixing D...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Pritzl, Stefanie D., Pschunder, Fernando, Ehrat, Florian, Bhattacharyya, Santanu, Lohmüller, Theobald, Huergo, María Ana Cristina, Feldmann, Jochen
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Química
Membrane sensing
Carbon dots
Ionic interactions
Lipid bilayer membranes
Trans-membrane energy transfer
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/123991
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:We report on trans-membrane interactions between blue-emitting carbon dots (CDs) and fluorescein. Hydrophobic CDs with a positive surface charge are embedded as-synthesized in the lipophilic sheet of the bilayer membrane of large synthetic phospholipid vesicles. The vesicles are prepared by mixing DOPC phospholipids and lipid molecules that contain anionic fluorescein attached to their hydrophilic head. Due to attractive electrostatic interactions, the CDs and fluorescein conjoin within the vesicle membrane, which leads to photoluminescence enhancement of fluorescein and facilitates trans-membrane energy transfer between the CDs and the dye.

Ejemplares similares