Organometallic Polycondensation for Conjugated Polymers

Yamamoto, Takakazu

doi:10.1002/9783527632664.ch1

Cited by 3 publications

(2 citation statements)

References 289 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conventional CPs with π-planar structures usually suffer from aggregation-induced quenching (ACQ) in their solid states, which strongly affect the detection sensitivity. Newly emerged CPs that display aggregation-induced emission (AIE) become competitive candidates for sensing in real-world applications, as they are highly emissive in the aggregated states. ,− However, CPs are mostly constructed from monomers bearing AA/BB coupling groups via polycondensation reaction, such as Heck, Suzuki, Stille, or Sonogashira couplings, and so forth. Therefore, multiple synthetic steps for different monomers, high catalyst loadings, and strict stoichiometric amount of monomers are required to obtain CPs with high yields and molecular weights.…”

Section: Introductionmentioning

confidence: 99%

AIE-Active Random Conjugated Copolymers Synthesized by ADMET Polymerization as a Fluorescent Probe Specific for Palladium Detection

Liu

Chen

et al. 2020

Macromolecules

View full text Add to dashboard Cite

Using acyclic diene metathesis (ADMET) polymerization, we have synthesized a series of random conjugated copolymers from diene monomers based on tetraphenylethene (TPE), which is an aggregation-induced emission (AIE)-active molecule, and comonomers such as 1,9-decadiene, 2,7-divinyl-9,9di-n-octylfluorene, and 1,4-dihexyl-2,5-divinylbenzene. These allhydrocarbon copolymers exhibit good solubility and high molecular weights. As proved by 1 H NMR spectra, chain segments composed of two monomers are randomly distributed in the polymers. Absorption and emission features from both TPE units and those conventional diene segments in conjugated copolymers are observed in their optical spectra. Because of the presence of AIE-active TPE units, emission intensities of the copolymers are greatly enhanced in tetrahydrofuran/water mixtures with increased water content. Moreover, the fluorescence of ADMET polymers can be quenched by palladium ions in quasi-aqueous solutions following a dynamic quenching mechanism. The fluorescence quench degrees are affected by both chemical structures of the copolymers and the solvent polarity. Our findings demonstrate that ADMET conjugated polymers have enormous potential as fluorescent "turn-off" probes specific for palladium ions even in the absence of a particular coordination interaction.

show abstract

Section: Introductionmentioning

confidence: 99%

AIE-Active Random Conjugated Copolymers Synthesized by ADMET Polymerization as a Fluorescent Probe Specific for Palladium Detection

Liu

Chen

et al. 2020

Macromolecules

View full text Add to dashboard Cite

show abstract

“…Poly(arylene)s including polythiophenes have been synthesized not only by electrolytic polymerizations [26], but also by chemically oxidative polymerizations [27] [28] and organometallic polycondensations [29]. Since the polycondensations afford the polymers with well-controlled bonding between monomeric units, many types of polycondensations have been developed.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Soluble Polythiophene Partially Containing 3,4-Ethylenedioxythiophene and 3-Hexylthiophene by Polycondensation

Imae¹,

Sagawa²,

Mashima³

et al. 2014

OJPChem

View full text Add to dashboard Cite

A novel poly(quinquethiophene) partially containing 3,4-ethylenedioxythiophene (EDOT) and 3-hexylthiophene, poly(3,3''''-dihexyl-3',4',3''',4'''-diethylenedioxy-2,2':5',2'':5'',2''':5''',2''''-quinquethiophene), was synthesized by three types of polycondensations. Among them, direct C-H coupling reaction gave the polymer with the highest molecular weight. The resulting polymer was soluble in common organic solvents. Absorption and fluorescence spectra of the polymer showed a remarkable red-shift compared with the corresponding monomer due to the expansion of effective π-conjugation length.

show abstract

Novel cationic rare earth metal alkyl catalysts for precise olefin polymerization

Yang

2017

J. Polym. Sci. Part A: Polym. Chem.

View full text Add to dashboard Cite

This mini‐review provides recent progress in the synthesis of rare earth metal dialkyl complexes and their application as highly efficient and regio‐/stereoselective catalysts in the coordination‐insertion (co)polymerization of olefins such as styrene, isoprene, 1,3‐cyclohexadiene, and ocimene. Through modifying the coordination atom, the ligand skeleton, and the substitutent on the skeleton of the chelating ligand, tuning the electron density and the steric environment around the rare earth metal center, the precise control of the activity and regio‐/stereoselectivity of the (co)polymerization as well as the comonomer incorporation and sequence distribution of the resulting copolymers are achieved. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 2271–2280

show abstract

Organometallic Polycondensation for Conjugated Polymers

Cited by 3 publications

References 289 publications

AIE-Active Random Conjugated Copolymers Synthesized by ADMET Polymerization as a Fluorescent Probe Specific for Palladium Detection

AIE-Active Random Conjugated Copolymers Synthesized by ADMET Polymerization as a Fluorescent Probe Specific for Palladium Detection

Synthesis of Soluble Polythiophene Partially Containing 3,4-Ethylenedioxythiophene and 3-Hexylthiophene by Polycondensation

Novel cationic rare earth metal alkyl catalysts for precise olefin polymerization

Contact Info

Product

Resources

About