Results 41 to 50 of about 20,918,698 (229)

An investigation of the enzymatic oligomerization of nitro-substituted phenylene diamine: Thermal and fluorescence properties

Journal of New Results in Science
2-nitro-p-phenylenediamine, an aromatic diamine, was studied for its oxidative oligomerization with H2O2 using enzyme-catalyzed oligomer synthesis.
Feyza Kolcu
doaj   +1 more source

Pressure driven neutral-ionic transition in ClMePD-DMeDCNQI

, 2001
Application of about 0.8 GPa pressure is sufficient to induce the neutral-ionic transition in the mixed stack charge-transfer crystal 2-chloro-5-methyl-$p$-phenylenediamine--2,5-dimethyl-dicyanoquinonediimine ({\CD}).
Brillante, Aldo, Farina, Luca, Girlando, Alberto, Masino, Matteo   +3 more
core   +1 more source

Surface modification strategy for fluorescence solvatochromism of carbon dots prepared from p-phenylenediamine.

Chemical Communications, 2020
The fluorescence solvatochromism of p-phenylenediamine-derived carbon dots (CDs) was modulated through surface modification with decanoic acid or perfluorodecanoic acid.
Kohei Sato, Rina Sato, Yoshiki Iso, T. Isobe   +3 more
semanticscholar   +1 more source

Detection of p-phenylenediamine Based on a Glassy Carbon Electrode Modified with Nitrogen Doped Graphene

International Journal of Electrochemical Science, 2015
In this paper, nitrogen doped graphene (NG) was successfully synthesized via thermal annealing employing graphene oxide and urea as raw materials. The morphology and microstructure of NG was characterized by TEM, AFM, XRD and XPS, respectively.
Shizhen Dai, Zhihua Xu, Meiwu Zhu, Yong Qian, Chunyan Wang   +4 more
doaj   +1 more source

Study of P-Phenylenediamine (PPD) Concentrations after Hair Dye Mixing: A Call for Safety Reassessment

Cosmetics, 2022
Para-phenylenediamine (PPD) is a chemical that is widely used in hair dyes. Multiple safety and regulatory agencies have categorized PPD as a potent sensitizer.
Majda H. Al-Enezi, Fahad S. Aldawsari
doaj   +1 more source

A method for nucleic acid hybridization to isolated chromosomes in suspension [PDF]

, 1987
A procedure was developed to provide differential fluorescent staining of metaphase chromosomes in suspension following nucleic acid hybridization. For this purpose metaphase chromosomes were isolated from a Chinese hamster x human hybrid cell line ...
Bier, Frank, Cremer, Christoph, Cremer, Thomas, Dudin, Gertrud, Hausmann, Michael, Schardin, Margit   +5 more
core   +1 more source

Structure and dielectric properties of electroactive tetraaniline grafted non-polar elastomers [PDF]

, 2020
Intrinsic modification of polybutadiene and block copolymer styrene–butadiene–styrene with the electrically conducting emeraldine salt of tetraaniline (TANI) via a three-step grafting method, is reported in this work.
Ellingford, Christopher, Pengchaicharoen, Atcharaporn, Wan, Chaoying, Wemyss, Alan M.   +3 more
core   +1 more source

A 10-Year Retrospective Review of Patch Test Results among Patients with Clinical Suspicion of Allergic Contact Dermatitis at a Tertiary Care Hospital in Riyadh

Journal of Nature and Science of Medicine
Background and Objectives: Allergic contact dermatitis (ACD) has a substantial impact on quality of life and its prevalence varies globally. This study aimed to assess the pattern of patch test reactivity among patients with suspected ACD.
Zahid Shakoor, Adel Almogren, Rim Sghiri, Usman Zahid Shakoor, Majd Albarrak, Reham Alhalabi, Rinad Alghoraiby, Saba Zahid Shakoor, Reem Alqarni, Shahad Altayash, Ghadah Alqarni, Izah Zahid Shakoor   +11 more
doaj   +1 more source

2,3-Bifunctionalized Quinoxalines: Synthesis, DNA Interactions and Evaluation of Anticancer, Anti-tuberculosis and Antifungal Activity

Molecules, 2002
A variety of 2,3-bifunctionalized quinoxalines (6-14) have been prepared by the condensation of 1,6-disubstituted-hexan-1,3,4,6-tetraones (1-4) with o-phenylenediamine, (R,R)-1,2-diaminocyclohexane and p-nitro-o-phenylenediamine.
Tom Ellis, Mohamed Bouakka, Abdelkader Hakkou, Sghir Elkadiri, Rachid Touzani, Abdelkrim Ramdani, Ann T. Kotchevar, Taibi Ben-Hadda, Michael J. Waring   +8 more
doaj   +1 more source

Electrochemical determination of ascorbic acid at p-phenylenediamine film-holes modified glassy carbon electrode [PDF]

Journal of the Serbian Chemical Society, 2015
In this work the determination of ascorbic acid (AA) at glassy carbon electrode (GCE) modified with a perforated film produced by reduction of diazonium generated in situ from p-phenylenediamine (PD) is reported. Holes were intentionally created
Olana Bikila Nagasa, Kitte Shimeles Addisu, Soreta Tesfaye Refera   +2 more
doaj   +1 more source