Surface attachment of well-defined redox-active polymers and block polymers via terminal functional groups
- Massachusetts Inst. of Technlogy, Cambridge, MA (United States)
Redox-active polymers and block polymers containing terminal groups for covalent attachment to surfaces have been prepared and characterized. Ferrocene- and phenothiazine-based redox-active polymers were prepared by ring-opening metathesis polymerization (ROMP) using Mo initiators of the type Mo(CHR)(NAr)(O-t-Bu)[sub 2] (R = tert-butyl or ferrocenyl, Ar = 2,6-diisopropylphenyl). The functional end groups introduced for surface attachment chemistry were Si(OEt)[sub 3], pyridyl, bromobenzyl, and pyrenyl derivatives. Polymers containing Si(OEt)[sub 3] were successfully used to derivatize Pt, In[sub 2](Sn)O[sub 3], and n-Si electrodes, whereas analogues of those same polymers lacking Si(OEt)[sub 3] groups do not bind to these surfaces. Polymers terminated with pyridyl or bromobenzyl groups, introduced in the capping reaction using the appropriate aldehydes, react with electrodes pretreated with benzyl chloride or pyridine groups, respectively, to give polymer-derivatized surfaces. Pyrene-capped polymers were made in an attempt to bind the polymers to carbon electrodes via selective pyrene adsorption. However, the polymer itself strongly adsorbs, precluding a specific role for the pyrene group. 37 refs., 8 figs.
- OSTI ID:
- 6768603
- Journal Information:
- Journal of the American Chemical Society; (United States), Vol. 115:16; ISSN 0002-7863
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
COPOLYMERS
ADSORPTION
DERIVATIZATION
REDOX REACTIONS
SYNTHESIS
ELECTRODES
SURFACE PROPERTIES
FERROCENE
POLYMERIZATION
PHENOTHIAZINES
POLYMERS
COVALENCE
AZINES
CHEMICAL REACTIONS
COMPLEXES
DIENES
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
IRON COMPLEXES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
POLYENES
SORPTION
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties
360000 - Materials