The guluronic acid to manuronic acid ratio was estimated through colorimetric reaction with
carbazole reagent at 546 nm [11].
On the basis of the research and analysis, Louzhen Fan and team, extend the study by fabricating an experimental LED from blue to red, with the NBE-T-CQDs blended with poly(N-vinyl
carbazole) (PVK) as the active emission layer.
Carbazole oligomers [4] have been widely studied in recent years thanks to their optoelectronic [5] and photovoltaic properties [4] and their industrial applications [6].
Content of basic nitrogen compounds in the concentrated product 1 Nitrogen compound wt% Nitrogen compound wt% Pyridines 16.53 Naphthalenamine 0.16 Quinolines 25.33 Amides 3.14 Anilines 25.86 Acridine 0.10 Isoquinolinol 1.52
Carbazole 0.73 Indoles 1.33 -- -- Note: "--" represents no data.
[14] Lewandowski M.: "Hydrotreating activity of bulk NiB alloy in model reaction of hydrogenation of
carbazole".
Per Guethlin, the markets for certain key feedstocks such as CLT acid, 2B acid (PR48.xx),
carbazole (PV23) and DCB (PY12, 13,14, 83,174, etc.) have "become very tight, leading to extreme price volatility."
Huang et al., "A conjugated hyperbranched polymer constructed from
carbazole and tetraphenylethylene moieties: convenient synthesis through one-pot "A2 + B4" suzuki polymerization, aggregation-induced enhanced emission, and application as explosive chemosensors and PLEDs," Journal of Materials Chemistry, vol.
A calibration curve was set up (y = 909.14x - 9891.9, [R.sup.2] = 0.9996), allowing for accurate [DELTA]-disaccharide quantitation in each sample, by loading known quantities (from 25 to 800 ng) of AMAC-derivatized [DELTA]-disaccharides obtained by depolymerisation of a highly purified UTI sample assayed for uronic acid (UA) content, according to the
carbazole method by Bitter and Muir [44].
Carbazole (Supelco 442506) and cysteine hydrochloride (C7880) were purchased from Sigma-Aldrich Ltd.
Finally, the concentration of alginate in solution was determined using the
carbazole method [26].