Redox-active macrocyclic and linear oligo-carbosiloxanes prepared via hydrosilylation from 1,3-divinyl-1,3-dimethyl-1,3-diferrocenyldisiloxane
Macromolecules, ISSN: 0024-9297, Vol: 45, Issue: 2, Page: 781-793
2012
- 30Citations
- 9Captures
Metric Options: Counts1 Year3 YearSelecting the 1-year or 3-year option will change the metrics count to percentiles, illustrating how an article or review compares to other articles or reviews within the selected time period in the same journal. Selecting the 1-year option compares the metrics against other articles/reviews that were also published in the same calendar year. Selecting the 3-year option compares the metrics against other articles/reviews that were also published in the same calendar year plus the two years prior.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
A series of novel, precisely defined, redox-active macrocyclic and linear co-oligocarbosiloxanes containing pendant ferrocenyl moieties attached to the carbosiloxane backbones, have been synthesized via hydrosilylation reactions of the bifunctional 1,3-divinyl-1,3-dimethyl-1,3-diferrocenyldisiloxane [(CH =CH)(Fc)MeSi] O (6) (Fc = (η -C H )Fe(η -C H )). Specifically, 6 was reacted with 1,1,3,3-tetramethyldisiloxane, in the presence of Karstedt's catalyst, to afford both the cyclic species 7, 8 and 9 (n = 3-6) and several linear co-oligomeric carbosiloxanes 10 and 11 (n = 2-5), containing a backbone in which the -Me Si-O-SiMe - moiety and the ferrocenyldisiloxane unit -MeFcSi-O-SiFcMe- are alternately linked by -(CH ) - bridges. Ferrocenyl cyclocarbosiloxanes 7 and 8, as well as linear 10, were isolated by column chromatography. The crude reaction mixtures, as well as pure macrocycles and oligocarbosiloxanes have been thoroughly characterized by elemental analysis, multinuclear ( H, C, Si) NMR spectroscopy, FT-IR and MALDI-TOF mass spectrometry, to establish their chemical structures and chain-end functionalities. The molecular structure of 7, in solid state, has been determined by single-crystal X-ray analysis. Cyclocarbosiloxane 7 shows a bent arrangement of the ferrocenyl-substituted disiloxane linkage (Si-O-Si angle of 144.05(16)°). The electrochemical behavior of 7-11 has been examined by cyclic (CV) and square wave (SWV) voltammetries, in dichloromethane solution using [PF ] and [B(C F ) ] , as supporting electrolyte anions of different coordinating ability. Macrocycles 7 and 8 and oligomer 10 show two well-resolved oxidation waves, which suggests significant interaction between neighboring ferrocenyl redox centers linked by the Si-O-Si bridge. The linear oligomer 11 , containing the higher number of pendant ferrocenyl moieties, undergoes oxidative precipitation yielding electroactive films on platinum electrode surfaces. © 2012 American Chemical Society.
Bibliographic Details
Provide Feedback
Have ideas for a new metric? Would you like to see something else here?Let us know