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Copolymerization of 1,3-butadiene with four 1-substituted 1,3-diene comonomers bearing amino and alkyoxy groups by a Ziegler–Natta iron(III) catalytic system to access in-chain functionalized syndiotactic 1,2-polybutadiene is reported herein. The polar comonomer content can be easily regulated by varying the comonomer loadings or polymerization conditions, affording functionalized syndiotactic 1,2-polybutadiene with different amounts of functionalities. The incorporation of a polar comonomer showed little influence on the 1,2-content and stereoregularity of the resulting polymers, giving a 1,2-structure as high as ∼85% and an rrrr pentad of 81.0%. Significantly improved surface properties of the polymers was obtained after incorporation of polar comonomer, as revealed from the remarkably decreased water contact angles.

Correction for ‘In-chain functionalized syndiotactic 1,2-polybutadiene by a Ziegler–Natta iron(iii) catalytic system’ by Shanshan Liang et al., RSC Adv., 2019, 9, 33465–33471, DOI: 10.1039/C9RA06499K.

Compound SA-6, SA-8 and SA-10 (totally called SAs) were synthesized by palladium-catalyzed Sonogashira cross-coupling reactions of core derivative 3 with three equiv. of 1-alkyloxy-4-ethynylbenzene 2 in good yields. After the dichloromethane solutions of SAs were mixed with methanol, two-level self-assemblies from nanowires to microrods based on SAs were obtained and characterized with scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The driving force of the two-level self-assembly is attributed to the strong π–π stacking ability of heterotriangulene cores and the hydrophobic interactions of alkyl chains with solvent molecules. These two processes may well be used for other molecules to fabricate new nanomaterials in the field of photoelectric devices.