Configuration and conformation of poly(3-carbazolylacetylene) including cis and trans radicals revealed by ESR spectroscopy
Literature Information
Takahiro Sasaki, Masayoshi Tabata
π-Conjugated cis and trans radicals of poly(N-isobutyl-3-carbazolylacetylene), P(iBCzA), were stereospecifically prepared using the [Rh(norbornadiene)Cl]2-triethylamine catalyst in toluene as the polymerization solvent at room temperature, and their geometric structures were determined using the electron spin resonance (ESR) method. The deuterated analogue, P(iBCzA-d1), with vinyl protons replaced with deuterium, D–C, was used to corroborate the structures together with the simulation of the observed ESR spectra and the calculation of the spin densities of the two radicals. The cis and trans radicals were generated at 1 : 1 ratio with spin densities delocalized on the main chain rather than the side-chain, unlike other substituted polyacetylenes, which have relatively small side-chains. This finding indicates that the large and planar carbazole moieties of the two radicals were perpendicular to the π-conjugated main-chain and that fairly stiff π-conjugated main chains were generated.
Related Literature
Capsulation of EBTAC into ZIF-8 for the development of a signal-on fluorescent biosensor to detect alkaline phosphatase
Shanshan Liu, Nian Wang, Li Li
DOI: 10.1039/D3AY01558K
Determination of polyfluoroalkyl substances in cosmetic products using dispersed liquid–liquid extraction coupled with UHPLC-MS/MS
Wenyao Liang, Zemin Xia, Jianhua Tan
DOI: 10.1039/D3AY01553J
Recent advances in composite hydrogels: synthesis, classification, and application in the treatment of bone defects
Pengfei Zhang, Jin Qi, Ran Zhang, Yifan Zhao, Jingyu Yan, Yajuan Gong, Xiaoming Liu, Binbin Zhang, Xiao Wu, Xiuping Wu, Cheng Zhang, Bing Zhao, Bing Li
DOI: 10.1039/D3BM01795H
Precise temperature control and rapid heating/cooling of infrared spectroscopy samples with a two-stage thermoelectric device
DOI: 10.1039/D3AY01627G
SERS combined with QuEChERS using NBC and Fe3O4 MNPs as cleanup agents to rapidly and reliably detect chlorpyrifos pesticide in citrus
Xu Wang, Shirong Ai, Aihua Xiong, Weiqi Zhou, Liang He, Jie Teng, Xiang Geng, Ruimei Wu
DOI: 10.1039/D3AY01604H
Preparation and performance study of rhodamine B naphthylamide, a fluorescent probe, for the detection of Fe3+
Jialin Wang, Shenghua Lv, Jingjing Zuo, Shan Liang, Juhui Yang, Leipeng Liu, Dequan Wei
DOI: 10.1039/D3AY01809A
Nano-in-nano enteric protein delivery system: coaxial Eudragit® L100-55 fibers containing poly(N-vinylcaprolactam) nanogels
Ana Sonzogni, Guadalupe Rivero, Verónica Gonzalez, Gustavo Abraham, Roque Minari
DOI: 10.1039/D3BM01422C
Delivery of gefitinib loaded nanoparticles for effectively inhibiting prostate cancer progression
Tong Tong, Qiang Jia
DOI: 10.1039/D3BM01735D
When microplastics meet electroanalysis: future analytical trends for an emerging threat
Sabina Susmel, Federico Figueredo
DOI: 10.1039/D3AY01448G
You might also like
What are the main uses of 4-Nitrophenyl phosphate disodium salt hexahydrate (CAS: 333338-18-4)?
4-Nitrophenyl phosphate disodium salt hexahydrate is primarily used as a substra...
What are the main uses of 2-(Trifluoromethyl)-1,3-oxazole-4-carboxylic Acid (CAS: 1060816-01-4)?
2-(Trifluoromethyl)-1,3-oxazole-4-carboxylic Acid (CAS: 1060816-01-4) is widely ...
How should 2-Fluoro-4-biphenylcarboxylic acid (CAS: 137045-30-8) be stored?
2-Fluoro-4-biphenylcarboxylic acid should be stored in a cool, dry place at room...
What industries use Prednisolone-21-Carboxylic Acid (CAS: 61549-70-0)?
Prednisolone-21-Carboxylic Acid is primarily used in the pharmaceutical industry...
How should 4-(Hydrazinomethyl)-1,2,3-benzenetriol (CAS: 3614-72-0) be stored?
4-(Hydrazinomethyl)-1,2,3-benzenetriol (CAS: 3614-72-0) should be stored in a co...
What industries use 4-Amino-1-methyl-1H-pyrazole-5-carboxylic acid hydrochloride (CAS: 92534-70-8)?
4-Amino-1-methyl-1H-pyrazole-5-carboxylic acid hydrochloride (CAS: 92534-70-8) i...
What regulatory guidelines apply to dehydropachymic acid (CAS: 77012-31-8)?
Dehydropachymic acid (CAS: 77012-31-8) is regulated by various agencies. It fall...
What is the market or research trend for 6-[(2,2-Dimethylpropanoyl)amino]nicotinic acid (CAS: 898561-66-5)?
The market and research trends for 6-[(2,2-Dimethylpropanoyl)amino]nicotinic aci...
How should 1,10-Phenanthroline-2,9-dicarbaldehyde (CAS: 57709-62-3) be stored?
1,10-Phenanthroline-2,9-dicarbaldehyde should be stored in a cool, dry place awa...
How is 5-Carbamoyl-11-oxo-10,11-dihydro-5H-dibenzo[b,f]azepin-10-yl acetate (CAS: 113952-21-9) typically synthesized?
5-Carbamoyl-11-oxo-10,11-dihydro-5H-dibenzo[b,f]azepin-10-yl acetate can be synt...
Source Journal
Polymer Chemistry

Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.













![N-[2-(4-Hydroxyphenoxy)-4-nitrophenyl]methanesulfonamide structure N-[2-(4-Hydroxyphenoxy)-4-nitrophenyl]methanesulfonamide structure](https://static.chemtradehub.com/structs/109/109032-22-6-7c88.webp)
![S-[2,3-Bis(palmitoyloxy)propyl]-N-[(9H-fluoren-9-ylmethoxy)(hydroxy)methylene]cysteine structure S-[2,3-Bis(palmitoyloxy)propyl]-N-[(9H-fluoren-9-ylmethoxy)(hydroxy)methylene]cysteine structure](https://static.chemtradehub.com/structs/210/210532-98-2-f6a7.webp)