A step‐ and redox‐economic route toward aminoallenes from simplealkynes and N‐fluorobenzenesulfonimide (NFSI) was established viaselenium‐π‐acid catalysis. This unprecedented method significantly streamlines the assembly of heterosubstituted 1,3‐propadiene motifs and is characterized by a broad functional group tolerance.
present a π-expansion strategy for polyaromatic hydrocarbons (PAHs) by C-H activation in a sustainable fashion. Thus, twofold C-H/N-H activations were accomplished by versatile ruthenium(II)carboxylate catalysis, providing step-economical access to diversely decorated fluorogenic DPPs that was merged with late-stage palladium-catalyzed C-H arylation on the thus-assembled DPP motif.
POLYMERS WITH TUNABLE BAND GAPS FOR PHOTONIC AND ELECTRONIC APPLICATIONS
申请人:You Wei
公开号:US20130092912A1
公开(公告)日:2013-04-18
The present invention provides, among other things, a copolymer comprising at least one donor monomer and at least one acceptor monomer. The polymer may optionally further comprise at least one additional comonomer. The polymers are useful as a charge-transport, semiconducting, electrochemical conducting, photoconducting, or light emitting material. Microelectronic devices comprising such polymers (e.g., as a heterojunction therein) are also described.
A semiconducting composition comprising a semiconducting polymer and a semiconducting non-polymeric polycyclic compound, wherein the semiconducting polymer comprises units of A and/or B:
wherein R
1
, R
2
, R
5
, R
6
, R
7
, R
8
, x, y, p, q, r, R
3
, R
4
, R
9
, R
10
and R
11
have any of the meanings defined in the description.