As an emerging class of hybrid complexes, the donor-acceptor (D-A) hybrid heterostructures combined with both advantages of photoactive organic and inorganic components have provided an excellent platform for the fabrication...
Developing
and designing novel materials for effective sulfur mustard
detoxification are of great importance given their threat to human
health. Crystalline donor–acceptor (D–A) hybrid heterostructures
as an emerging class of materials are composed of semiconducting organic
and inorganic components with enhanced charge-separated properties
and thus promising applications in photocatalysis and photovoltaic
cells. Herein, we demonstrated that the combination of three perylene
diimide derivatives (PDIs) as electron-deficient acceptors with polyoxometalate
(POM) anion [SiW12O40]4– as
electron-rich donors resulted in three crystalline D–A hybrid
heterostructures, namely, (Me4-PDI)2·SiW12O40 (1), (Me4-Br2-PDI)1.5·(HSiW12O40) (2), and (Me4-Cl4-PDI)2·SiW12O40 (3). Due to the considerable
electrostatically assisted noncovalent interactions (lone pair−π,
π–π, anion−π, and hydrogen-bonding
interactions) between electron donors and acceptors, POMs, and PDIs,
these hybrids displayed a significant enhancement in the photochemical
stability and selective photocatalytic oxidation of the sulfur mustard
simulant, 2-chloroethyl ethyl sulfide (CEES).
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