The quest to understand light harvesting by the photosynthetic system in living beings has triggered the exponential growth of interest in molecular array system capable of photo induced energy and electron transfer. Multiporphyrin arrays are suitable candidates for studying in-depth, the various mechanisms involved in this process. This report focusses on the power of metal-ligand coordination to bring about unique molecular architecture based on porphyrins and how these arrangements may pave the way for understanding the intricacies of the photosynthetic process. © 2018 Chemical Publishing Co. All Rights Reserved.

Santosh G

Chemistry

School of Advanced Sciences

Chennai Campus

Fulltext

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Asian Journal of Chemistry

Chemistry - An Asian Journal

Hetero Face-to-Face Porphyrin Array with Cooperative Effects of Coordination and Host-Guest Complexation

Chemical Science

Self-complementary double-stranded porphyrin arrays assembled from an alternating pyridyl–porphyrin sequence

Photochem. Photobiol. Sci.

Contents list

We report the synthesis of first examples of hexaporphyrin and dodecaporphyrin assemblies on cyclotriphosphazene scaffold by adopting two different approaches based on Ru-pyridyl "N" coordination in decent yields. The multiporphyrin assemblies were confirmed by 31P, 13C, 1H, 1H-1H COSY, and NOESY NMR spectroscopic studies. The absorption studies showed 2-fold intensity enhancement with negligible changes in peak maxima compared to porphyrin monomers. The redox potentials of multiporphyrin assemblies showed the redox features of the constituted porphyrin monomers and supported weak interactions among the porphyrin units in noncovalent hexaporphyrin and dodecaporphyrin arrays. © 2014 American Chemical Society.

Inorganic Chemistry

Multiporphyrin arrays on cyclotriphosphazene scaffolds

Porphyrin rings containing two meso-pyridyl groups either in cis or trans fashion can be used to construct Re(I) bridged multiporphyrin assemblies. The cis-dipyridyl porphyrins with various porphyrin cores such as N4, N3O, N3S, N2S2 have been used to react with Re(CO)5Cl in THF at refluxing temperature and constructed planar Re(I) bridged porphyrin dyads containing either one type of porphyrin subunit or two types of porphyrin subunits. The trans-dipyridyl porphyrins have been used to construct Re(I) bridged porphyrin squares. The porphyrin dyads have been explored for singlet-singlet energy transfer studies and porphyrin squares have been used for catalysis, chemical sensing, molecular sieving and photocurrent production studies. An overview of synthesis of Re(I) bridged porphyrin dyads, triads and tetrads and their interesting photophysical properties are highlighted in this paper. © Indian Academy of Sciences.

Journal of Chemical Sciences

Re(I) bridged porphyrin dyads, triads and tetrads

Non-Covalently Linked Multiporphyrin Arrays by Metal Coordination

Journal	Asian Journal of Chemistry
Publisher	Asian Journal of Chemistry
ISSN	0970-7077
Open Access	No