By the same authors

From the same journal

A comparative study of the allomerization reaction of chlorophyll a and bacteriochlorophyll a

Research output: Contribution to journalArticle

Author(s)

Department/unit(s)

Publication details

JournalJOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2
DatePublished - Aug 1998
Issue number8
Number of pages7
Pages (from-to)1833-1839
Original languageEnglish

Abstract

A combined spectroscopic and chromatographic approach has been employed to study the products of allomerization of chlorophyll a (chl a),bacteriochlorophyll a (bchl a) and bacterioviridin (bvir) under a variety of conditions. Using high-performance liquid chromatography, mass spectrometry (MS), tandem-MS, NMR spectroscopy, UV-VIS absorption spectroscopy and protected surface-enhanced resonance Raman spectroscopy we have identified the allomers formed under all the conditions. Analysis of the different product distributions enables us to reach conclusions about the reaction mechanism. Water is identified as the source of hydroxyl in the allomerization reaction and it is firmly established that a C(13(2))-CO2Me group is required for allomerization to occur. Under identical allomerization conditions, bchl a yields a distribution of products that is different from those given by chi a and bvir. This observation has allowed us to demonstrate that it is the bonding at the C(7)-C(8) position of chlorophylls and not the presence of a conjugated carbonyl functionality that influences the reactivity in ring E.

    Research areas

  • PERFORMANCE LIQUID-CHROMATOGRAPHY, C-13 NMR-SPECTRA, MASS-SPECTROMETRY, PHOTOSYNTHETIC PIGMENTS, THIN-LAYER, PRODUCTS, IDENTIFICATION, TETRAPYRROLES, SPECTROSCOPY, DERIVATIVES

Discover related content

Find related publications, people, projects, datasets and more using interactive charts.

View graph of relations