Month

2 Matching Results

Results open in a new window/tab.

Assembling Artificial Photosynthetic Models in Water Using β-Cyclodextrin-Conjugated Phthalocyanines as Building Blocks (open access)

Assembling Artificial Photosynthetic Models in Water Using β-Cyclodextrin-Conjugated Phthalocyanines as Building Blocks

Article describes how two water-soluble zinc(II) phthalocyanines substituted with two or four permethylated β-cyclodextrin (β-CD) moieties at the α positions have been utilized as building blocks for the construction of artificial photosynthetic models in water. The hydrophilic and bulky β-CD moieties not only can increase the water solubility of the phthalocyanine core and prevent its stacking in water but can also bind with a tetrasulfonated zinc(II) porphyrin (ZnTPPS) and/or sodium 2-anthraquinonesulfonate (AQ) in water through host–guest interactions.
Date: March 29, 2023
Creator: Chen, Xiao-Fei; Gobeze, Habtom B.; D'Souza, Francis & Ng, Dennis K. P.
System: The UNT Digital Library
The membrane pacemaker hypothesis: novel tests during the ontogeny of endothermy (open access)

The membrane pacemaker hypothesis: novel tests during the ontogeny of endothermy

Article explores the ‘membrane pacemaker’ hypothesis which proposes a biochemical explanation for among-species variation in resting metabolism, based on the positive correlation between membrane docosahexaenoic acid (DHA) and metabolic rate. The authors tested this hypothesis using a novel model, altricial red-winged blackbird nestlings, predicting that the proportion of DHA in muscle and liver membranes should increase with the increasing metabolic rate of the nestling as it develops endothermy. In support of the membrane pacemaker hypothesis, DHA proportions increased in membranes from pectoralis muscle, muscle mitochondria and liver during post-hatch development. By contrast, elevated dietary DHA had no effect on resting metabolic rate, despite causing significant changes to membrane lipid composition.
Date: March 29, 2018
Creator: Price, Edwin R.; Sirsat, Tushar S.; Sirsat, Sarah K. G.; Curran, Thomas; Venables, Barney J. & Dzialowski, Edward M. (Edward Michael)
System: The UNT Digital Library