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The porphyrin handbook - Kadish K.M.

Kadish K.M. The porphyrin handbook - Academic press, 2000. - 368 p.
Download (direct link): kadishsmishgulilard2000.djvu
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56. Electron Transfer Chemistry of Porphyrins and Metalloporphyrins
Shunichi Fukuzumi
57. Intramolecular Photoinduced Electron-Transfer Reactions of Porphyrins
Devens Gust Thomas A. Moore
58. Electrochemistry of Heme Proteins Fred M. Hawkridge
Isao Taniguchi
xxiv
Contents of Volumes in This Set
Volume 9 / Database of Redox Potentials and Binding Constants
59. Metalloporphyrins in Nonaqueous Media: Database of Redox Potentials
Karl M. Kadish
Guy Royal
Eric Van Caemelbecke Lena Gueletti
60. Equilibrium Data of Porphyrins and Metalloporphyrins Masaaki Tabata
jun Nishimoto
Volume 10 / Database of Tetrapyrrole Crystal Structure Determination
61. Database of Tetrapyrrole Crystal Structure Determinations Mathias 0.
Senge
Cumulative Index
Noncovalent Multiporphyrin Assemblies
JEAN-CLAUDE CHAMBRON, VALERIE HEITZ and JEAN-PIERRE SAUVAGE
Laboratoire de Chimie Organo-Minerale, Universite Louis Pasteur, Institut
Le Bel,
67070 Strasbourg, France
I.
Introduction.............................................................
............................................. 1
II. Multiporphyrin Edifices Built via H Bonds and Other Host-Cuest
Interactions........................................... 4
III. Assembly of Porphyrins via Metal-Ligand
Bonds....................................................................
..... 7
A. Metals Inside Porphyrins Involved in Assembly
Processes.............................................................
7
1. Ligand Appended to
Porphyrins...............................................................
..................... 7
2. Porphyrins Gathered by External Bridging
Ligands.................................................................
15
3. Porphyrins Gathered by a Porphyrin Assembling
Unit............................................................... 17
4. Two-Point Coordination of Porphyrins to Covalently Bound Metal-
Containing Bis-Porphyrins......................... 22
B. Porphyrins Assembled by Coordination to Nonporphyrinic
Metals....................................................... 23
1. Open
Structures...............................................................
................................... 23
2. Metallomacrocycles (Closed
Structures)..............................................................
............. 28
C. Metal-Bridged Porphyrin
Dimer....................................................................
................... 30
D. Molecular Boxes for
Porphyrins...............................................................
....................... 30
E. Combination of Coordination Bonds and Hydrogen
Bonds................................................................
31
IV. Rotaxanes and Catenanes Incorporating Two or Several Noncovalently
Bound Porphyrins.................................. 31
A. [2]-
Catenanes................................................................
....................................... 32
B. Porphyrin Arrays with Noncovalently Assembled Components
Incorporated in Rotaxane Structures........................ 34
V.
Conclusion...............................................................
............................................. 40

References...............................................................
.............................................. 41
I. Introduction
The importance of multiporphyrin assemblies stems at first from nature
and the many systems based on sets of sev eral porphyrins or related
molecules, arranged in a well-controlled geometry and displaying
precisely delined electronic and/or catalytic properties. The functions
of these multiporphyrinic moieties are multifarious and span from
molecular oxygen transport to electron transfer and photosynthesis. In
some cases, the various tetrapyrrolic components are held together via
covalent bonds to the protein matrix but recent examples have also shown
that, in other systems, the assembly is formed without intervention of
any covalent bond between the constitutive subunits.

The concept of allosteric effects in biology1 applies beautifully to
hemoglobin and cooperative binding of 0,.:
The Porphyrin Handbook
K.M. Kadish, K.M. Smith, R. Cuilard, Eds.
Volume 6 / Applications: Past, Present and Future
In a multiporphyrinic assembly, conformational changes in a given part of
the system, triggered by binding a first molecule of 02, induces a
dramatic modification of the whole protein shape and permits stronger
binding of a second molecule of 0> This example, studied and relatively
well understood several decades ago, represents one of the most important
multiporphyrin ensembles of biology. It is also one of the few natural
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