Conjugated Polyelectrolytes Based On Polyarylene Ethynylene
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| Author | : Xiaoyong Zhao |
| Publisher | : |
| Total Pages | : |
| Release | : 2007 |
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ABSTRACT: In this dissertation, we present the research that was focused on the design, synthesis and photophysical properties of conjugated polyelectrolytes (CPEs) based on poly(arylene ethynylene) (PAE). Applications of these materials for anion sensing and dye-sensitized solar cell (DSCs) were also explored. First, a meta-linked poly(phenylene ethynylene) featuring chiral anionic groups was designed and synthesized. Because of the presence of chiral side chains, the conjugated backbone of this polymer folds preferentially into a left-handed helix in water, as proven by absorption, fluorescence and circular dichroism spectroscopy. Similar to the helix formed by double-strand DNA, the helical conformation of the synthetic polymer interacts with a metallointercalator [Ru(bpy)2(dppz)]2 and turns on the emission from the complex. Cationic cyanine dyes can also bind to the helical conformation of the polymer in a "groove-binding" manner. A chiral and optically active aggregate of cyanine dyes is formed by transferring the chirality of the polymer template. Second, we have systematically investigated the photophysical properties of para-linked poly(phenylene ethynylene)s (PPEs). These CPEs are shown to undergo a solvent-driven.
| Author | : Yan Liu |
| Publisher | : |
| Total Pages | : |
| Release | : 2008 |
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The chemiluminescence of CPE is successfully applied as a biosensor platform by qualitatively and quantitatively detecting activities of two enzymes, peptidase and ALP.
| Author | : Bin Liu |
| Publisher | : John Wiley & Sons |
| Total Pages | : 448 |
| Release | : 2013-08-07 |
| Genre | : Technology & Engineering |
| ISBN | : 3527655727 |
This is the first monograph to specifically focus on fundamentals and applications of polyelectrolytes, a class of molecules that gained substantial interest due to their unique combination of properties. Combining both features of organic semiconductors and polyelectrolytes, they offer a broad field for fundamental research as well as applications to analytical chemistry, optical imaging, and opto-electronic devices. The initial chapters introduce readers to the synthesis, optical and electrical properties of various conjugated polyelectrolytes. This is followed by chapters on the applications of these materials in optical sensing and imaging with emphasis on biological systems, while the final section addresses the emerging applications of conjugated polyelectrolytes in optoelectronic devices, concluding with an in-depth discussion of structure-property relationship. The editors and contributors are all pioneers and experts in this expanding field. This monograph is not only for chemists, materials scientists, and physicists, but also a unique source of knowledge for readers with scientific background interested in polyelectrolytes.
| Author | : |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2002 |
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Conjugated polyelectrolytes are conjugated polymers that feature ionic side groups which render the materials soluble in water and other polar solvents. In this review we summarize recent work which has been carried out to synthesize a variety of new conjugated polyelectrolyte structures, including those with poly(paraphenylene), poly(phenylene vinylene) and poly(phenylene ethynylene) backbone structures. Work that has examined the optical, photophysical and solution properties of these materials is also reviewed. Finally, a brief survey of novel applications of conjugated polyelectrolytes to the fabrication of optoelectronic devices and fluorescent sensors is provided.
| Author | : Shu Wang |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 91 |
| Release | : 2013-09-25 |
| Genre | : Technology & Engineering |
| ISBN | : 3642405401 |
Functionalized Conjugated Polyelectrolytes presents a comprehensive review of these polyelectrolytes and their biomedical applications. Basic aspects like molecular design and optoelectronic properties are covered in the first chapter. Emphasis is placed on the various applications including sensing (chemical and biological), disease diagnosis, cell imaging, drug/gene delivery and disease treatment. This book explores a multi-disciplinary topic of interest to researchers working in the fields of chemistry, materials, biology and medicine. It also offers an integrated perspective on both basic research and application issues. Functionalized conjugated polyelectrolyte materials, which have already drawn considerable interest, will become a major new direction for biomedicine development.
| Author | : Mario Leclerc |
| Publisher | : John Wiley & Sons |
| Total Pages | : 379 |
| Release | : 2010-06-24 |
| Genre | : Technology & Engineering |
| ISBN | : 9783527629794 |
This first systematic compilation of synthesis methods for different classes of polymers describes well-tested and reproducible procedures, thus saving time, money and chemicals. Each chapter presents the latest method for a specific class of conjugated polymers with a particular emphasis on the design aspects for organo-electronic applications. In this concise and practically oriented manner, readers are introduced to the strategies of influencing and controlling the polymer properties with respect to their use in the desired device. This style of presentation quickly helps researchers in their daily lab work and prevents them from reinventing the wheel over and over again.
| Author | : Seth C. Rasmussen |
| Publisher | : American Chemical Society |
| Total Pages | : 198 |
| Release | : 2023-12-01 |
| Genre | : Science |
| ISBN | : 0841299609 |
This digital primer serves as an excellent introduction to conjugated polymers, particularly in terms of their synthesis and design. Chapters one and two introduce common terminology and fundamental concepts. Chapter three covers known structure–function relationships that can be used to design conjugated polymers with the desired properties for specific applications, concluding with a discussion of the additive and sometimes conflicting aspects of these design elements. Chapters four, five, and six cover the various methods used to synthesize these materials, beginning with the oldest and most simple approaches, and increasing in synthetic complexity. Advanced undergraduates, graduate students, and faculty wishing to enter this field for the first time should find this primer beneficial. At the same time, however, we have pointed out various misconceptions still commonly found in the literature, which should be valuable to those already familiar with these materials.
| Author | : Dongping Xie |
| Publisher | : |
| Total Pages | : 152 |
| Release | : 2012 |
| Genre | : |
| ISBN | : |
This dissertation focuses on fundamental investigations of the structure-property relationships of conjugated polyelectrolytes (CPE) and conjugated oligomers, as well as their application to the dye-sensitized solar cells (DSSCs). First, a pair of conjugated polyelectrolytes with sulfonate side groups that contain three-ring (phenylene ethynylene) units linked by a single ... \CH2- or ... O- tether (C-PPE and O-PPE, respectively) were studied. The linkers served to interrupt the π conjugation along the polymer backbone. Fluorescence spectroscopy revealed that O-PPE forms a fluorescent aggregate in methanol and water; however, the fluorescence of C-PPE is much weaker in water, and C-PPE exhibits only weak aggregate fluorescence. Fluorescence quenching of the polymers was examined using methylviologen (MV2+) as a cationic quencher. C-PPE showed only a weak amplified quenching effect, with a Stern-Volmer quenching constant of KSV ~ 6 ... 105 M-1 in methanol. Interestingly, for O-PPE in methanol, the aggregate emission is strongly quenched with KSV ~ 5 ... 106 M-1, which is comparable to the highest quenching efficiency observed for fully π-conjugated polyelectrolytes.
| Author | : Narendra Pal Singh Chauhan |
| Publisher | : Walter de Gruyter GmbH & Co KG |
| Total Pages | : 359 |
| Release | : 2019-10-21 |
| Genre | : Science |
| ISBN | : 3110639130 |
Biocidal polymers are designed to inhibit or kill microorganisms such as bacteria, fungi and protozoans. This book summarizes recent findings in the synthesis, modification and characterization of various antimicrobial polymers ranging from plastics and elastomers to biomimetic and biodegradable polymers. Modifications with different antimicrobial agents as well as antimicrobial testing methods are described in a comprehensive manner.
| Author | : Bin Liu |
| Publisher | : John Wiley & Sons |
| Total Pages | : 426 |
| Release | : 2018-06-11 |
| Genre | : Science |
| ISBN | : 3527342737 |
This first book to specifically focus on applications of conjugated polymers in the fields of biology and biomedicine covers materials science, physical principles, and nanotechnology. The editor and authors, all pioneers and experts with extensive research experience in the field, firstly introduce the synthesis and optical properties of various conjugated polymers, highlighting how to make organic soluble polymers compatible with the aqueous environment. This is followed by the application of these materials in optical sensing and imaging as well as the emerging applications in image-guided therapy and in the treatment of neurodegenerative diseases. The result is a consolidated overview for polymer chemists, materials scientists, biochemists, biotechnologists, and bioengineers.
