Dendrimer structural formula

Figure 6.1 Structural formula of dendrimer 1 containing 27 ferrocene units at its periphery.20d...

Figure 6.2 Structural formula of dendrimer 2 containing 64 [FeCp(ri6-C6Me6)]+ units at its periphery.23...

Figure 6.3 Structural formula of dendrimer 3 containing an octahedral Mo6 cluster as core and 36 ferrocene units in its periphery.27...

Figure 6.4 (a) Structural formula of the 1,2,3-triazole-linked dendrimer 4 containing nine ferrocene peripheral units (b) cyclic voltammogram of 4 without (1) and in the presence of... 

Figure 6.5 Structural formula of dendrimer 5 containing 32 octamethylferrocene peripheral units.38...

Figure 6.6 (a) Structural formula of dendrimer 6 containing at its periphery 16 biferrocene... 

Figure 6.7 (a) Structural formula of the fourth-generation dendrimer 7 containing at its... 

Figure 6.8 Structural formula of dendrimer 8 carrying at its periphery 27 tetrairon [ CpFe(p3-CO) 4] clusters.44...

Figure 6.10 Structural formulas of homometallic dendrimers 10 and 11 terminated with four and eight ferrocene units, respectively, and of the related heterometallic dendrimers 12 and 13 terminated with four ferrocene and four (T 6-C6H5)Cr(CO)3 moieties, and with eight ferrocene and eight (ri6-C6H5)Cr(CO)3 moieties, respectively.50... 

Figure 6.11 Structural formulas of the fourth-generation dendrimers terminated with 64 metal complexes [Ru(bpy)3]2+ (14),54a,d [Ru(tpy)2]2+ (15),54 and [Co(tpy)212 1 (16).56...

Figure 6.12 Structural formula of dendrimer 17 containing a tris-viologen core appended with six [Ru(bpy)3]2+ complexes.57...

Figure 6.13 Structural formulas of dendrimers 18 and 19 containing four [Ru(tpy)2] + complexes in their branching points that represent the first example of dendritic constitutional isomers.58...

Figure 6.14 Structural formulas of zwitterionic dendrimers that contain four [Ru(tpy)2] complexes along the branches and eight carboxylate units either in the internal branching points (20) or at the periphery (21).58a>b...

Figure 6.15 Structural formulas, abbreviations, and graphic symbols used to represent the components of dendrimers 22-25.

Figure 6.17 Structural formula of the docosanuclear dendrimer 25. represent the dendrimer are those displayed in Fig. 6.15.

Figure 6.18 Structural formulas of two families of dendrimers containing a 1,3,5-trisubsti-tuted benzenoide core and 9 (A918 + and B918 + ) and 21 (B2142+ and A2142 + ) 4,4 -bipyridinium units in their branches.68 The -type dendrimers are terminated with tetraaryl-methane bulky moieties while the -type dendrimers contain in their periphery less bulky aryloxy groups. For comparison purposes the structural formulas of dendrons A24 + and B24 + and model compound DoV2 + are also reported.

Figure 6.19 Structural formula of dendrimer 26 containing a hexaphenylbenzene core and 24 C60 units.74...

Bochkarev et al. [110] have recently described the anionic polymerization of HM(C6F5)3, M = Ge, Si, or Sn (Nc = 1, Nb = 3). Most noteworthy is the germanium system, where they have obtained self-limiting molecular-mass ranges of approximately 100000-170000, in spite of the mode of preparation. These workers hypothesize that deprotonation at germanium produces anions that nucleophilically displace fluorine atoms in para positions to produce a dendrimer structure of the following general formula ... 

Fig. 12 Structural formula of dendrimer 10 (top) and energy transfer occurring from the peripheral dimethoxybenzene and naphthalene units to the light-emitting dansyl unit (bottom) [63]...

Fig. 14 Structural formulas of two families of dendrimers containing a 1,3,5-trisubstituted benzenoide core and 9 (A918+ and B918+) and 21 (A2142+ and B2142+) viologen units in their branches [69-71]...

Figure 13. Structural formulas and schematic representation of some components used for the construction of light-harvesting metal-based dendrimers [37, 38],...

Fig. 33 Synthesis and structural formula of the quaterthiophene-containing carbosilane dendrimer Gl(Und-4T-Hex)...

All ligands 3c through e-H2 form coordination compounds with titanium(IV) ions that possess dendrimer structures. Due to the non-polar Frechet-type dendritic substituents, the compounds are soluble only in solvents with low polarities (mixtures of methanol and chloroform). Consequently, the dimeric complexes are observed as the major species in solution. Fignre 2.6 shows the structural formula of L Lij (30)5X12 ] and the structure derived from x-ray diffraction of the anion of the GO dendrimer [Lij (30)5X12)] . Xhe central triple lithium-bridged part and the dendritic substituents decorating its periphery may be seen. 

Fig. 5. Schematic formula of the dendrimer and of the Re(I) guest which can complex via hydrogen bonds, at its periphery. Upon irradiation at 2=330nm, where the dendritic structure is almost selectively excited due to the different absorption profile with respect to the rhenium complex, an efficient energy transfer can occur from the dendrimer to the organometallic moiety.

Fig. 9. Formula of a dendrimer constituted by a poly(propylene amine) structure functionalized with 32 dansyl units at the periphery, capable of coordinating Co ions, and the corresponding scheme (Fig. 2d).

Polypropylene amines, poly(amidoamines) (PAMAM) and silicon dendrimers set records for the number of generations, whereas the polyacetylene dendrimer prepared by Moore et al. [6] with the formula C1398H1278 and a mass of 18079.53 holds the heavyweight championship title of pure hydrocarbons. Mullen et al. have recently published a series of aromatic hydrocarbon dendrimers consisting of phenylene-bridged benzene rings. [7] Interestingly, these species form two-dimensional planes rather than three-dimensionally extended structures. 

Phosphazene polymers comprise a class of several hundred different macromolecules with the general formula shown in Structure 1, where R represents organic, organometallic or inorganic side groups. Two structural factors can be varied for these polymers. First, the basic skeletal architecture varies from linear polymers or block copolymers to stars, dendrimers, combs, cyclolinear or cyclomatrix structures. Second, more than 250 different side groups have been linked to the various skeletons. Most of the polymers that have been studied in detail are linear macromolecules of type 1 or block copolymers formed between 1 and classical organic polymers. 

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