期刊
POLYMER CHEMISTRY
卷 2, 期 11, 页码 2651-2660出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1py00298h
关键词
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资金
- EPSRC
- Fundacion Ramon Areces
- EU
- EPSRC [EP/F056974/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F056974/1] Funding Source: researchfish
A new method for the preparation of organic-organometallic diblock copolymers including a polyferrocenylsilane (PFS) metalloblock through photocontrolled ring-opening polymerization (ROP) is reported. Polystyrene (PS) homopolymers end-capped with a cyclopentadienyl group (1) were used as macroinitiators for the photocontrolled ROP of sila[1]ferrocenophanes [Fe(eta-C5H4)(2)Si {C CtBu}(2)] 3a and [Fe(eta-C5H4)(2)Si(Me)(C CSiMe3)] 3b to afford diblock copolymers with controlled molecular weights and block ratios, as well as low polydispersities (PDI < 1.2). Block copolymer PSm-b-[Fe(eta-C5H4)(2)Si{C C(t-Bu)}(2)](n) 4 was clusterized with [Co-2(CO)(8)], forming the highly metallized PSm-b-[Fe(eta-C5H4)(2)Si{Co-2(CO)(6)C-2(t-Bu)}(2)](n) (PS-b-(Co-PFS), 7). The diblock PSm-b-[Fe(eta-C5H4)(2)Si(Me)(C CH)](n) 6 was prepared by selective desilylation of PSm-b-[Fe(eta-C5H4)(2)Si (Me)(C CSiMe3)](n) 5 was then reacted with ClAuP(n-Bu)(3) in the presence of an amine as HCl acceptor to afford PSm-b-[Fe(eta-C5H4)(2)Si(Me){C CAuP(n-Bu)(3)}](n) (PS-b-(Au-PFS), 8). Preliminary studies on the self-assembly of these materials in thin films showed phase separation with metal-rich nanodomains within an organic matrix.
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