Multiporphyrin

Fig. 3. A large multiporphyrin array arranged in a dendritic scaffold...

Gunter MJ (2006) Multiporphyrin Arrays Assembled Through Hydrogen Bonding 121 263-295... 

Hubberstey P, Suksangpanya U (2004) Hydrogen-Bonded Supramolecular Chain and Sheet Formation by Coordinated Guranidine Derivatives 111 33-83 Hupp JT (2006) Rhenium-Linked Multiporphyrin Assemblies Synthesis and Properties 121 145-165... 

Fenyo, D. Chait, B. T. Johnson, T. Lindsey, J. S. Laser desorption mass spectrometry of synthetic multiporphyrin arrays. J. Porph. Phthalocyan. 1997, 1, 93-99. 

Wagner, R. W. Ciringh, Y. Clausen, C. Lindsey, J. S. Investigation and refinement of palladium-coupling conditions for the synthesis of diarylethyne-linked multiporphyrin arrays. Chem. Mater. 1999,11, 2974-2983. 

Fisher JAN, Susumu K, Therien MJ, Yodh AG (2009) One- and two-photon absorption of highly conjugated multiporphyrin systems in the two-photon Soret transition region. J Chem Phys 130 134506... 

Wagner RW, Johnson TE, Lindsey JS (1996) J Am Chem Soc 118 11166-11180 Soluble synthetic multiporphyrin arrays. 1. Modular design and synthesis... 

Over the years many different synthetic strategies have been employed to construct ET compounds or multiporphyrin systems and the available synthetic repertoire is continuously expanding110. 

Numerous systems of this type, such as the carotenoid-porphyrin-quinone triad 94 [8.62a] (for PeT in a pentad see [8.62b]), have been extensively studied in many laboratories from the photochemical point of view and as models of natural photosynthetic centres [8.62-8.69, A. 10, A.20], especially in order to achieve very fast charge separation [8.69] and slow recombination, for instance in multiporphyrin... 

Inorganic templating and self-assembly provide coordination compounds whose geometries make possible the synthesis of complex structures, namely of cyclic multiporphyrin arrays [9.13a, 9.179], of inorganic rotaxanes [9.97a, 9.180], of multi-catenates and catenands (see 181) [8.281, 8.282] and even of molecular knots (see 182) [8.282, 9.77, 9.181] (in 181 and 182 a) with, b) without Cu(l) template). 

The design of dendritic multiporphyrin systems [18] permits energy transfer over longer distances. The outer shell of the dendrimer shown in Fig. 5.14 is made up of eight porphyrin-zinc complexes as energy donor units. Excitation of the units of the outer shell leads to fluorescence emission of the metal-free porphyrin core as a result of energy transfer from the periphery to the energy acceptor [19]. 

Stang et al. [94JA4981, 9403776, 95JA1667, 95JA6273] described the self assembly of a series of unique cationic, tetranuclear, Pd(II)- and Pt(II)-based macrocyclic squares (e.g., 25), utilizing different bidentates as the sides of these structures. The similar self-assembly complexation of dipyridyl porphyrins by cis- and tran.v-substituted Pd(II) or Pt(II) ions possessing square planar coordination afforded multiporphyrin arrays with a square... 

Ercolani, G., (ed. E. Alessio) (2006) Noncovalent Multiporphyrin Assemblies, Springer, Berlin. 

In order to build synthetic analogues of the bacterial reaction centre, several approaches using multiporphyrin systems have recently been reported (Dubowchik and Hamilton, 1985, 1986 Wasielewski et al., 1982). However, the number of molecular arrays whose rigidity is sufficient to ensure control of the distance and orientation of the respective tetrapyrrolic subunits is highly limited (Dubowchik and Hamilton, 1987 Cowan etal., 1987, Sessler and Johnson, 1987). 

Lammi RK, Ambroise A, Balasubramanian T, et al. Structural control of photoinduced energy transfer between adjacent and distant sites in multiporphyrin arrays. J Am Chem Soc 2000 122 7579-91. 

Choi M-S,YamazakiT,Yamazaki I, AidaT. Bioinspired molecular design of light-harvesting multiporphyrin arrays. Angew Chem Int Ed Eng 2004 43 150-8. 

Van Patten PG, Shreve AP, Lindsey JS, Donohoe RJ. Energy transfer modelling for the rational design of multiporphyrin light-harvesting arrays. J Phys Chem B 1998 102 4209-16. 

Burrell AK, Officer DL, Plieger PG, Reid DCW. Synthetic routes to multiporphyrin arrays. Chem Rev 2001 101 2751-96. 

This multithreading process was realized in the construction of multiporphyrin assemblies from macrocycles with pendent zinc(II) or gold(III) meso-tetraarylporphyrins.59 These assemblies are shown in Figure 2.26,... 

D. Holten, D.F. Bocian, J.S. Lindsey, Probing Electronic Communication in Covalently Linked Multiporphyrin Arrays. A Guide to the Rational Design of Molecular Photonic Devices , Acc. Chem. Res., 35,57 (2002)... 

A representative example of multiporphyrin species in which the subunits are assembled by relatively weak coordination links is the three-chromophore species studied by Hunter and Hyde (Figure 12). In this system, the light absorbed by the zinc porphyrins is partially transferred to the free-base porphyrin subunit [34]. 

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