We have reported synthesis of arsenic-containing polymers, poly(vinylene-arsine)s,
as first soluble well-defined polymers containing arsenic atoms in the main chain,
by ring collapsed radical alternating copolymerization (RCRAC) of cyclooligoarsines and phenylacetylene or its derivatives.
We have also synthesized 1,4-dihydro-1,4-diarsinines (DHDA), 1,4-diarsa-1,4-cyclohexadienes, as new cyclic ditopic organoarsenic ligands by radical reaction of pentamethylcyclopentaarsine (cyclo-(MeAs)5) and acetylene derivatives.
Our DHDA show unique reactivity and coordination behaviors. During the course of our studies on synthesizing a number of different complexation structures of
DHDA to transition metals, we have found that the nonporous crystalline solid of DHDA-Pt(II) complex shows on-off solid-state luminescence switching through reversible and guest-selective uptake and escape.
The crystal trapped atmospheric organic vapor molecules such as CH2Cl2, acetone, or toluene despite the absence of large pores in the static solid-state structure.
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