By Fritz Vögtle
The moment quantity on dendrimers is back written by means of pioneers within the box. Their contributions light up the features of dendrimers pointed out within the subtitle, and likewise contact on components past chemistry, particularly fabric sciences in addition to organic, medicinal, analytical, and nano features.
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Extra resources for Dendrimers II: Architecture, Nanostructure and Supramolecular Chemistry
All reactions were carried out in DMF using SnCl2 or N,N-dimethylbenzylamine (BDMA) as catalyst and hydroquinone as inhibitor under N2 . Operation at 70–100 °C was necessary due to the readily crosslinkable double bonds. Products were characterized by titration, GPC, and IR. Rheological behavior was studied on UV-cured samples. 3 Chiral Dendrimers There are various ways to build chiral dendrimers . Seebach et al.  were the first to differentiate dendrimers based on the position of the chiral centers in the molecule.
72. 73. 74. 75. 76. 77. 78. 79. 80. 81. 82. 83. 84. 85. 86. 87. 88. 89. 90. 91. 92. 93. 94. 95. 96. 97. 98. 99. S. Nummelin et al. Moore J, Xu Z (1991) Macromolecules 24:5893 Xu Z, Moore JS (1993) Angew Chem Int Ed Engl 32:246 Xu Z, Moore JS (1993) Angew Chem Int Ed Engl 32:1354 Xu Z, Kyan B, Moore JS (1994) Stiff dendritic macromolecules based on phenylacetylenes. In: Newkome GR (ed) Advances in dendritic macromolecules. JAI Press Inc, 1:69 de Brabander-van den Berg EMM, Meijer EW (1993) Angew Chem Int Ed Engl 32:1308 de Brabander-van den Berg EMM, Nijenhuis A, Mure M, Keulen J, Reintjes R, Vandenbooren F, Bosman B, de Raat R, Frijns T, v d Wal S, Castelijns M, Put J, Meijer EW (1994) Macromol Symp 77:51 Mekelburger H-B, Jaworek W, Vögtle F (1992) Angew Chem Int Ed Engl 31:1571 Issberner J, Moors R, Vögtle F (1994) Angew Chem Int Ed Engl 33:2413 Moors R,Vögtle F (1995) Cascade molecules: building blocks, multiple functionalization, complexing units, photoswitching.
Fig. 48. Construction of [G-3]-bipyridine ligands  Compounds were characterized by 1H- and 13C-NMR, positive FAB-MS and MALDI-TOFMS. The bipyridine ligands 251 and 253 were refluxed with RuII chloride in EtOH for 14 d to yield tris(bipyridine) chelates 255 and 256 (Fig. 48). Complete transesterification occurred (OMe Æ OEt) with the [G-1]-product. The [G-2]-compound was only partly transesterified probably due its denser surface compared with its [G-1] counterpart. In the case of the [G-3]-ligand 254 complexation did not proceed in the desired manner.