In:
Chemistry – A European Journal, Wiley, Vol. 23, No. 65 ( 2017-11-21), p. 16484-16490
Abstract:
A bifunctional Ru II photosensitizer unit was decorated with one n‐ and one p‐type polymer chain to form precisely controlled hierarchical copolymer‐type architectures for light‐induced charge separation. The applied modular chemistry‐on‐the‐complex strategy benefits from separately prepared building blocks and their orthogonal linkage in the two final assembly steps. Upon visible light absorption, electron transfer is initiated between the conjugated poly(3,6‐carbazole) chain and the styrenic poly(naphthalene diimide) segments. Steady‐state and time‐resolved spectroscopy show complete charge separation within a few nanoseconds ( 〉 95 % efficiency) persisting several tens of microseconds. The recombination is significantly reduced in comparison to low‐molecular model systems or to non‐conjugated congeners, reflecting the higher charge mobility in conjugated polymers. In summary, the modularity of the presented approach is expected to serve as a versatile platform to tailor the interface between the charge transport domains in a systematic fashion.
Type of Medium:
Online Resource
ISSN:
0947-6539
,
1521-3765
DOI:
10.1002/chem.201704180
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
1478547-X
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