NDLI: Preparation of layered double hydroxide/chlorophyll a hybrid nano-antennae: a key step

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Lerner, Dan A. Sommer Márquez, Alicia E. Fetter, Geolar Bosch, Pedro Tichit, Didier Palomares, Eduardo
Description	Author Affiliation: Sommer Márquez AE ( Facultad de Ciencias Químicas, Universidad Autónoma de Puebla, Blvd. 14 Sur, 72570 Pueblo, PUE, Mexico.)
Abstract	In the first step to obtain an efficient nano-antenna in a bottom-up approach, new hybrid materials were synthesized using a set of layered double hydroxides (LDHs) with basic properties and pure chlorophyll a (Chl a). The stability of the adsorbed monolayer of Chl a was shown to be dependent on the nature and the ratio of the different metal ions present in the LDHs tested. The hybrid materials turned out to be adequate for stabilizing Chl a on Mg/Al LDHs for more than a month under ambient conditions while a limited catalytic decomposition was observed for the Ni/Al LDHs leading to the formation of pheophytin. These changes were followed by namely XRD, DR-UV-vis and fluorescence spectroscopies of the hybrid antennae and of the solutions obtained from their lixiviation with acetone or diethylether. On Mg/Al hydrotalcites the stability of the adsorbed Chl a was equivalent for values of the metal atom ratio ranging from 2 to 4. The latter hybrids should constitute a good basis to form efficient nanoscale light harvesting units following intercalation of selected dyes. This work describes an efficient preparation of Chl a that allows scale-up as well as the obtention of a stable Chl a monolayer on the surface of various LDHs.
ISSN	14779226
Issue Number	27
Volume Number	43
e-ISSN	13645447
Journal	Dalton Trans.
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2014-07-21
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Aluminum Chemistry Chlorophyll Hydroxides Manganese Nanostructures Spinacia Oleracea Adsorption Aluminum Hydroxide Magnesium Hydroxide Spectrometry, Fluorescence Spectrophotometry, Ultraviolet X-Ray Diffraction Journal Article Research Support, Non-U.S. Gov't
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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