Multi-Step and Switchable Energy Transfer in Photoluminescent Organosilicone Capsules.
Adv Sci (Weinh)
; 11(31): e2402565, 2024 Aug.
Article
en En
| MEDLINE
| ID: mdl-38894600
ABSTRACT
Light-harvesting is of vital importance for many events, such as photosynthesis. To efficiently gather and transfer solar energy, delicate antenna is needed, which has been achieved by algae and plants. However, construction of efficient light-harvesting systems using multiple, artificial building blocks is still challenging. Here, blue-emitting organosilicone capsules containing carbon dots (denoted as CDs-Si) in ethanol are prepared, which can effectively transfer energy to green-emitting (silicone-functionalized bodipy, Si-BODIPY) or red-emitting (rhodamine b, RhB) dyes. In ternary system, sequential Förster resonance energy transfer from CDs-Si to Si-BODIPY and further to RhB is realized, which is accompanied with a less pronounced, parallel FRET directly from CDs-Si to RhB. The overall efficiency of energy transfer reaches ≈86%. By introducing a photoswitch (1,2-bis(2,4-dimethyl-5-phenyl-3-thienyl)-3,3,4,4,5,5-hexafluoro-1-cyclopentene, DAE) to the system, the emission becomes switchable under alternative illumination with UV and visible light, leading to the formation of smart artificial light-harvesting systems.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Adv Sci (Weinh)
Año:
2024
Tipo del documento:
Article
País de afiliación:
China