NDLI: Demetalation kinetics of natural chlorophylls purified from oxygenic photosynthetic organisms: effect of the formyl groups conjugated directly to the chlorin π-macrocycle

Please wait, while we are loading the content...

Enhanced efficiency of the visible-light photocatalytic hydrogen generation by the ruthenium tris(2,2′-bipyridyl)–methyl viologen system in the presence of cucurbit[n]urils

The photophysics of alloxazine: a quantum chemical investigation in vacuum and solution

Kinetics of reversible photoisomerization: determination of the primary quantum yields for the E–Z photoisomerization of silylenephenylenevinylene derivatives

A novel elsinochrome A derivative: a study of drug delivery and photodynamic activity

Fluence rate-dependent intratumor heterogeneity in physiologic and cytotoxic responses to Photofrin photodynamic therapy

Effect of bridgehead substitution on the fluorescence quenching of 2,3-diazabicyclo[2.2.2]oct-2-enes by solvents and antioxidants

Demetalation kinetics of natural chlorophylls purified from oxygenic photosynthetic organisms: effect of the formyl groups conjugated directly to the chlorin π-macrocycle

Encapsulation of 2-(4′-N,N-dimethylamino)phenylimidazo[4,5-b]pyridine in β-cyclodextrin: effect on H-bond-induced intramolecular charge transfer emission

Drug efflux transporters, MRP1 and BCRP, affect the outcome of hypericin-mediated photodynamic therapy in HT-29 adenocarcinoma cells

Photophysical properties and photodynamic activity of octacationic oxotitanium(iv) phthalocyanines

Photochemical investigation of a photochromic diarylethene compound that can be used as a wide range actinometer

Cucurbituril complexes cross the cell membrane

Pyrearinus termitilluminans larval click beetle luciferase: active site properties, structure and function relationships and comparison with other beetle luciferases

Additions and corrections for 2009

Back matter

Back cover

Photochemical & Photobiological Sciences Vol - 8 Issue - 9

Photochemical & Photobiological Sciences Vol - 8 Issue - 8

Photochemical & Photobiological Sciences Vol - 8 Issue - 7

Photochemical & Photobiological Sciences Vol - 8 Issue - 6

Photochemical & Photobiological Sciences Vol - 8 Issue - 5

Photochemical & Photobiological Sciences Vol - 8 Issue - 4

Photochemical & Photobiological Sciences Vol - 8 Issue - 3

Photochemical & Photobiological Sciences Vol - 8 Issue - 2

Photochemical & Photobiological Sciences Vol -7

Photochemical & Photobiological Sciences Vol -6

Photochemical & Photobiological Sciences Vol -5

Photochemical & Photobiological Sciences Vol -4

Photochemical & Photobiological Sciences Vol -3

Photochemical & Photobiological Sciences Vol -2

Demetalation kinetics of natural chlorophylls purified from oxygenic photosynthetic organisms: effect of the formyl groups conjugated directly to the chlorin π-macrocycle

Content Provider	Royal Society of Chemistry (RSC)
Author	Tamiaki, Hitoshi Kashimura, Shigenori Saga, Yoshitaka Hirai, Yuki
Copyright Year	2009
Abstract	Demetalation kinetics of natural chlorophyll (Chl) d purified from Acaryochloris marina was first studied and compared with those of Chls a and b. The demetalation rate constant of Chl d, which possessed a formyl group at the 3-position, was five-fold smaller than that of Chl a possessing a vinyl group at the same position in aqueous acetone at the proton concentration of 1.2 × 10−3 M at 25 °C. In contrast, the demetalation rate constant of Chl b possessing a formyl group at the 7-position was 26 times smaller than that of Chl a. The activation energy of demetalation reaction of Chl d was larger than that of Chl a, but smaller than that of Chl b. These indicate that the substitution effect of 3-formyl group on the acidic removal of central magnesium in Chls was smaller than that of 7-formyl group.
Starting Page	1701
Ending Page	1707
Page Count	7
File Format	HTM / HTML PDF
ISSN	1474905X
Volume Number	8
Issue Number	12
Journal	Photochemical & Photobiological Sciences
DOI	10.1039/b9pp00018f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Chlorophyll Chl Proton Vinyl group Magnesium Chls Activation energy Marina Acetone
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Universal chlorophyll equations for estimating chlorophylls a, b, c, and d and total chlorophylls in natural assemblages of photosynthetic organisms using acetone, methanol, or ethanol solvents

Chlorophyll Modifications and Their Spectral Extension in Oxygenic Photosynthesis

Universal chlorophyll equations for estimating chlorophylls a, b, c, and d and total chlorophylls in natural assemblages of photosynthetic organisms using acetone, methanol, or ethanol solvents

In vitro conversion of vinyl to formyl groups in naturally occurring chlorophylls.

Bleaching of chlorophylls by UV irradiation in vitro: the effects on chlorophyll organization in acetone and n-hexane

Review a viewpoint: why chlorophyll a?.

Bleaching of chlorophylls by UV irradiation in vitro: The effects on chlorophyll organization in acetone and n-hexane

Bleaching of chlorophylls by UV irradiation in vitro: the effects on chlorophyll organization in acetone and n-hexane

Detection of Chlorophyll d′ and Pheophytin a in a Chlorophyll d-Dominating Oxygenic Photosynthetic Prokaryote Acaryochloris marina

Demetalation kinetics of natural chlorophylls purified from oxygenic photosynthetic organisms: effect of the formyl groups conjugated directly to the chlorin π-macrocycle

Similar Documents

Universal chlorophyll equations for estimating chlorophylls a, b, c, and d and total chlorophylls in natural assemblages of photosynthetic organisms using acetone, methanol, or ethanol solvents

Chlorophyll Modifications and Their Spectral Extension in Oxygenic Photosynthesis

Universal chlorophyll equations for estimating chlorophylls a, b, c, and d and total chlorophylls in natural assemblages of photosynthetic organisms using acetone, methanol, or ethanol solvents

In vitro conversion of vinyl to formyl groups in naturally occurring chlorophylls.

Bleaching of chlorophylls by UV irradiation in vitro: the effects on chlorophyll organization in acetone and n-hexane

Review a viewpoint: why chlorophyll a?.

Bleaching of chlorophylls by UV irradiation in vitro: The effects on chlorophyll organization in acetone and n-hexane

Bleaching of chlorophylls by UV irradiation in vitro: the effects on chlorophyll organization in acetone and n-hexane

Detection of Chlorophyll d′ and Pheophytin a in a Chlorophyll d-Dominating Oxygenic Photosynthetic Prokaryote Acaryochloris marina

Demetalation kinetics of natural chlorophylls purified from oxygenic photosynthetic organisms: effect of the formyl groups conjugated directly to the chlorin π-macrocycle