A one-pot strategy to improve end-capping efficacy in Stille poly-condensations
Literature Information
Jared D. Harris, Kenneth R. Carter
Herein we examine the end-capping efficacy of several end-capping reagents (ECRs) in the Stille polymerization of 2,7-dibromo-9,9-bis(2-ethylhexyl)fluorene (Fl) and 2,5-bis(trimethylstannyl)-thieno[3,2-b]thiophene (TT). Polymerizations were carried out in a one-pot fashion where the molar ratio of TT relative to Fl was biased, ideally generating bis(trimethylstannyl) macromolecules. Various ECRs (bromobenzene, 4-bromotoluene, 4-(trifluoromethyl) bromobenzene, 4,4′-bromobiphenyl, 2-bromo-9,9-dimethylfluorene, iodobenzene, 4-iodotoluene, and 4,4′-iodobiphenyl) differing in reactivity were employed in the one-pot reaction. Polymers were characterized using GPC, 1H NMR, and end-capping efficacy was evaluated with MALDI-ToF MS. The iodo derivatives were found to disrupt propagation, severely inhibiting molecular weight. The bromo ECRs varied in end-capping efficiency: bromofluorene ∼ bromobiphenyl > trifluoromethylbromobenzene ∼ bromobenzene > bromotoluene. Additionally, we demonstrate a strong efficiency dependence on initial monomer concentration and demonstrate this method's superiority over post-polymerization end-capping.
Related Literature
Entropically-driven ring-opening metathesis polymerization (ED-ROMP) of macrocyclic olefins prepared from deoxycholic acid to give functionalized polymers‡
Philip Hodge, Abdel Chakiri
DOI: 10.1039/C5PY00272A
Aziridine-functionalized polydimethylsiloxanes for tailorable polymeric scaffolds: aziridine as a clickable moiety for structural modification of materials
Hyun Kyung Moon, Seohyun Kang, Hyo Jae Yoon
DOI: 10.1039/C7PY00317J
Development of polycarbonate-containing block copolymers for thin film self-assembly applications
Ankit Vora, Rudy J. Wojtecki, Kristin Schmidt, Anindarupa Chunder, Joy Y. Cheng, Alshakim Nelson, Daniel P. Sanders
DOI: 10.1039/C5PY01846C
SET-LRP of NIPAM in water via in situ reduction of Cu(ii) to Cu(0) with NaBH4
Mikhail Gavrilov, Timothy J. Zerk, Paul V. Bernhardt, Virgil Percec, Michael J. Monteiro
DOI: 10.1039/C5PY01855B
Hydrolytically degradable, dendritic polyglycerol sulfate based injectable hydrogels using strain promoted azide–alkyne cycloaddition reaction
Pradip Dey, Shabnam Hemmati-Sadeghi, Rainer Haag
DOI: 10.1039/C5PY01326G
Unexpected fluorescence from maleimide-containing polyhedral oligomeric silsesquioxanes: nanoparticle and sequence distribution analyses of polystyrene-based alternating copolymers
Mohamed Gamal Mohamed, Kuo-Chih Hsu, Jin-Long Hong, Shiao-Wei Kuo
DOI: 10.1039/C5PY01537E
Random terpolymer with a cost-effective monomer and comparable efficiency to PTB7-Th for bulk-heterojunction polymer solar cells
Tao Jiang, Youtian Tao, Cong Fan, Lingwei Xue, Zhiguo Zhang, Hai Li, Yongfang Li
DOI: 10.1039/C5PY01771H
RAFT/MADIX polymerization of N-vinylcaprolactam in water–ethanol solvent mixtures
Ine Van Nieuwenhove, Samarendra Maji, Mamoni Dash, Sandra Van Vlierberghe, Richard Hoogenboom, Peter Dubruel
DOI: 10.1039/C6PY02224C
Synthesis and self-organization of azobenzene containing hemiphasmidic side-chain liquid-crystalline polymers with different spacer lengths
Yan-Shuang Xu, Dong Shi, Jun Gu, Zhen Lei, He-Lou Xie, Ti-Peng Zhao, Shuang Yang, Er-Qiang Chen
DOI: 10.1039/C5PY01508A
Triazine-mediated controlled radical polymerization: new unimolecular initiators
J. Areephong, J. W. Kramer, H. A. Sprafke
DOI: 10.1039/C5PY01563D
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.













![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)
