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The electrochem. behavior of cyclcopentadienyliron contg. complexes and polymers has given rise to useful materials, such as electrochem. probes for biol. systems, electrocatalysts, and electrochem. switches.The development of new systems contg. cyclopentadienyliron complexes can only improve and in...
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Polyarom. ether/imines with pendent cationic cyclopentadienyliron moieties were prepd. using two different synthetic strategies. The first methodol. involved the reaction of diiron complexes contg. terminal complexed chloroarenes with diphenolic compds. In this strategy, the imine functionality was ...
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The introduction of cyano groups into arom. sulfones is of interest in light of the potential uses of these materials as monomeric units in the synthesis of engineering thermoplastics. Organoiron complexes (I) were initially prepd. by reaction of p-dichlorobenzenecyclopentadienyliron with various di...
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The synthesis of arom. ether functionalized norbornene monomers was accomplished using chloroarene cyclopentadienyliron complexes. Monomers contg. aliph. ether linkages or bulky arom. ether groups within their structures were synthesized. These monomers were subjected to ring-opening metathesis poly...
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Displacement of the terminal chloro groups of the diiron arene complexes with 1-naphthol led to the formation of the corresponding complex with terminal naphthoxy groups. Photolytic demetallation of these complexes produced the monomeric blocks in good yields. Scholl polymn. was implemented leading ...
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Our research interests have been focused on the design of new monomeric and polymeric materials using organoiron complexes as precursors. Cyclopentadienyliron chloroarene complexes were used to mediate the synthesis of sulfide contg. compds. These compds. were designed with various arom. and aliph. ...
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Over the past few decades, we have seen a growing interest in the development of various classes of metal-contg. polymers. While polymers are traditionally carbon-based materials that contain only a few other elements, organometallic polymers could incorporate almost all the other elements of the pe...
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As functionalization of the polynorbornene backbone has shown to be a viable route towards altering the thermal and chem. properties of the resulting polymeric material, our focus has been on the prepn. of norbornene monomers contg. a side-chain consisting of a rigid mesogen and/or an aliph. spacer....
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Photolytic demetallation of cyclopentadienyliron complexes was investigated. Effects of solvent nucleophilicity, counter anion, wavelength, and nature of the arene were studied. Initial results indicate a dependence on the wavelength of the light source as well as the duration of photolysis, with de...
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The topic of metal-contg. polymers is reviewed with special emphasis on the need for polymeric materials for the 21st century and the role that metal and metalloid-contg. polymers will fill. Also emphasized is the wide variety of potential polymers including varying the metal, oxidn. state of the me...
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Recently, we have focused on the synthesis of monomeric and polymeric cationic organoiron functionalized with azo dyes. In this presentation we will describe the synthesis of novel polyferrocene incorporating azo dyes and pendent cyclopentadienyliron cations. Condensation of 1,1'-ferrocenedicar...
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Polyethers and/or thioethers contg. organoiron moities in either the backbone or the side chain were prepd. under mild reaction conditions. Polysiloxanes contg. arene cyclopentadienyliron or ferrocene moieties were also prepd. and their morphol. thermal and spectroscopic characterizations were examd...
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Ferrocene-based monomers were prepd. via the reaction of cationic chloroarene cyclopentadienyliron complex cations with 1,1'-ferrocene dicarbonyl chloride. These monomers were then reacted with O-, S- and N- contg. dinucleophiles to give the polymeric materials with neutral iron moieties in the back...
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There has been tremendous interest in organoiron macromols. This interest stems from their application as chem. sensors, electrocatalysts, modified electrodes and photo-active mol. devices. Herein, we report the synthesis and characterization of a no. of different classes of organoiron macromols. co...
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Interest in organometallic polymers is due to their applications as chem. sensors, electrocatalysts, modified electrodes and photo-active mol. devices. The incorporation of organometallic moieties into the backbone of org. mols. has modified the optical, magnetic and thermal properties of these syst...
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Various four-arm organoiron macromols. contg. different azo dye moieties have been prepd. via metal-mediated nucleophilic arom. substitutions and ester condensation reactions. The synthesis of a four-arm organoiron star contg. aryl- and hetaryl-azo chromophores (7) and a cross-linked azo dye-contg. ...
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A review. Metallodendrimers can be assembled in a no. of ways (covalent, ionic, hydrogen-bonding, coordination), wherein the metal plays key roles: sensor, catalyst, electronic, magnetic, or optical device. The mol. engineering pertaining to the metallodendritic design is relevant to multiple aspect...
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A no. of sol. organometallic polymers with pendent cyclopentadienyliron and pentamethylcyclopentadienylruthenium moieties were prepd. under mild exptl. conditions. These polyarom. materials contained ether, thioether and amine bridges. The following figure represents one of the organometallic polyme...
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A no. of substituted arene cyclopentadienyliron complexes were reacted with phenolphthalein in the presence of potassium carbonate using DMF as a solvent to prep. di-iron complexes as shown in the following scheme. Subsequent reaction with n-butylamine resulted in an unprecedented cleavage of the et...
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Nucleophilic arom. substitution of p-dichlorobenzene complexed to a cyclopentadienyliron cation with oxygen and sulfur nucleophiles led to the formation of polymers with pendent iron moieties as shown in the following scheme. These polymers were sol. in various org. solvents. Photolytic demetallatio...
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A no. of routes to the synthesis of dendrimeric materials coordinated to the cationic cyclopentadienyliron moiety were explored. As an example, reaction of dichloroarene cyclopentadienyliron complexes with a triphenolic compd. resulted in the formation of a trimetallic ether complex contg. terminal ...
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Arom. ether complexes of cyclopentadienyliron contg. pendent carboxylic acid groups were reacted with methacrylate and styrene functionalized mols. These diiron complexes were subsequently polymd. in the presence of AIBN to give the corresponding polymethacrylates and polystyrenes with organoiron fu...
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A review is presented on the use of metal coordination polymers for nanofabrication. Nanostructures of metal nanoparticles and semiconducting metal oxides made from polymers coordinated to the precursors are presented. [on SciFinder(R)]
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Isomeric dichlorobenzene complexes of ironcyclopentadienyl and pentamethylcyclopentadienyl- ruthenium were used to facilitate nucleophilic arom. substitution (SNAr) reactions with a variety of O, S, and N contg. nucleophiles. Oligomeric and polymeric systems were achieved by variation in the ratio o...
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