Results 51 to 60 of about 1,547 (180)

Electrocoagulation of Quinone Pigments

open access: yesMolecules, 2006
Some representative quinones, viz. one naphthoquinone (plumbagin) and five anthraquinones (alizarin, purpurin, chrysazin, emodin, and anthrarufin), were subjected to electrocoagulation.
Duang Buddhasukh   +5 more
doaj   +1 more source

Functional Metal Complexes for Solar–Light‐Driven Energy Conversion

open access: yesAdvanced Materials, Volume 38, Issue 22, 17 April 2026.
This review provides an exhaustive summary of the recent advancements of functional metal complexes in solar‐to‐electrical, ‐chemical, and ‐thermal energy conversion, comprising material categories, design strategies, underlying principles of operation, and identified improvement of performances.
Yanyan Qin   +3 more
wiley   +1 more source

Self‐Photosensitizing Cobalt Complexes for Photocatalytic CO2 Reduction Coupled with CH3OH Oxidation

open access: yesAngewandte Chemie, Volume 137, Issue 26, June 24, 2025.
Self‐photosensitizing non‐noble metal complexes achieve CO2 photoreduction coupled with CH3OH photooxidation, simultaneously synthesizing formic acid in the absence of any additional photosensitizers and electron sacrificial reductants. Abstract The use of metal complexes as homogeneous molecular catalysts has attracted considerable attention regarding
Ji‐Hong Zhang   +5 more
wiley   +2 more sources

Textile Dyes from Gokstad Viking Ship’s Grave

open access: yesHeritage, 2021
The grave from Gokstad in Norway, dating to ca 900 AD, is one of the best-preserved Viking Age ship graves in the world. The grave mound contained a variety of goods along with human remains, buried in a Viking ship.
Jeannette Jacqueline Łucejko   +2 more
doaj   +1 more source

Advancing Single‐Walled Carbon Nanotubes toward Next‐Generation Electronic Materials: The Critical Roles of Purity and Processability

open access: yesSmall Methods, Volume 10, Issue 4, 23 February 2026.
Single‐walled carbon nanotubes (SWNTs) are promising for a wide range of applications. In particular, their exceptional electrical conductivity positions them as potential alternatives to traditional metal conductors. This review identifies the key mechanisms governing their conductivity within composites and proposes practical pathways for translating
Xiao Yu, Alex Adronov
wiley   +1 more source

Spektroskopiske undersøgelser af anthraquinonerne Alizarin og Purpurin: Spectroscopic investigations of the anthraquinones Alizarin and Purpurin [PDF]

open access: yes, 2005
I dette projekt undersøges Alizarin (1,2-dihydroxy-9,10-anthraquinon) og Purpurin (1,2,4-trihydroxy-9,10-anthraquinon) med optisk spektroskopi. Der måles i det ultraviolette og visuelle (UV-VIS) område på prøver af de to stoffer i chloroform, n-hexan ...
Andersen, Signe Høgsberg   +1 more
core  

Determination of Natural Madder Dyes Using UV‐Vis and Near‐Infrared Spectroscopy for Rapid Industrial Quality Control

open access: yesJournal of Spectroscopy, Volume 2026, Issue 1, 2026.
Natural madder dye, together with turmeric and indigo, is one of the most widely used plant‐derived colorants in sustainable textile production. However, significant variability in raw materials and processing routes often leads to unstable dyeing performance and limits industrial standardization. Rapid and reliable quantitative determination of active
Wei Jiang   +6 more
wiley   +1 more source

Lithium storage mechanisms in purpurin based organic lithium ion battery electrodes [PDF]

open access: yes, 2012
Current lithium batteries operate on inorganic insertion compounds to power a diverse range of applications, but recently there is a surging demand to develop environmentally friendly green electrode materials.
Chumyim, Porramate   +8 more
core   +2 more sources

Purpurin-induced changes in the proteome of Candida albicans

open access: yes, 2012
OBJECTIVES: To identify the changes in protein abundance in Candida albicans after exposure to purpurin. METHODS: The optimal inhibitory dose of purpurin for proteomic analysis of C.
Tsang, PWK   +9 more
core   +2 more sources

Kinetic determination of lysine in pharmaceutical sample [PDF]

open access: yesJournal of the Serbian Chemical Society, 2002
Akinetic method for the determination of micro quantities of the amino acid lysine (Lys) is described in this paper. The catalytic activity of cobalt in the reaction of the oxidation of purpurin (1,2,4-trihydroxyanthraquinone PP) by hydrogen peroxide in ...
Mitić Snežana S.   +3 more
doaj   +1 more source

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