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Showing 1 to 20 of 1055 for “"conjugated"”.
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Synthesis of Conjugated Polymers
Conjugated polymers (CPs) are a unique class of materials because they possess the electronic properties of semi-conductors and processability of polymers. Their electronic and optical properties can be controlled by their chemical structures and conjugation length.To enhance the electron affinity …
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Polythioethers From Conjugated Systems
Made available in DSpace on 2015-05-12T17:02:20Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0005249.PDF: 3530618 bytes, checksum: 6a1854ece7e486c15f938c3ec3251783 (MD5) Previous issue date: 1953
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Structural manipulation of conjugated polymers
The syntheses of new classes of conjugated polymers are presented. The synthesis of novel alkyne bridged trispyrazolylmethane ligands, their coordination behavior and their crystallographic properties are studied. A series of functionalized poly(paraphenyleneethynylene)s, PPEs, are produced by …
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Polarization of certain conjugated systems
… of excited singlet states of twisted conjugated systems. This study began as an investigation of systems which are symmetric about a central double bond. Symmetry requires that when twisting about such a bold, there must be a crossing of two low-lying states. At the one election level …
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Optical spectroscopy of conjugated polymers.
… studies of the optical properties of two model conjugated systems (poly-(p-phenylenevinylene) and a set of zinc-centred oligo-(porphyrins) ). Various optical probing techniques have been employed to study the nature and behaviour of the primary photoexcited state of poly-(p-phenylenevinylene) …
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A conjugated polymer plastic gel
We present a gel route to process highly oriented conjugated polymer films and fibers. The incorporation of hexafluoroisopropanol, a strong and stable dipolar group, to the polythiophene backbone enhances the solubility and especially, the hydrogen bond forming capabilities of the polymer. This …
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Design, fabrication, and characterization of complex, multilayer heterostructures of conjugated and non-conjugated polymers via molecular self-assembly
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1995.
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Carbon Nitride and Conjugated Polymer Composite Materials
… individually and as composites with the organic conjugated polymers polybithiophene (PBT) and poly(3-hextlthiophene) (P3HT). At low nitrogen content, the film structure was dominated by graphitic sp2 percolation networks, whereas at higher nitrogen contents CNx films started to demonstrate …
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Triplet exciton dynamics in conjugated polymer films
… knowledge of the excited state dynamics in conjugated polymers is necessary for efficient use of these novel materials. Triplet excitons are believed to play an important role in conjugated polymer-based device operation. Triplet excitons are also believed to play a primary role in …
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Quantum transport through conjugated organic molecular junctions
Understanding the electronic transport properties of junctions consisting of a scattering region such as a nanoscale object or molecule connected to electrodes is the central basis for future nano and molecular scale applications. In this thesis, I shall discuss the theoretical methods needed to …
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A search for superconductivity in conjugated polymers
… for a superconducting phase transition in a conjugated polymer with implanted magnetic atoms. To carry out this investigation we have performed a modified worldline quantum Monte Carlo (QMC) algorithm concentrating on the polymer cis-polyacetylene at finite temperatures. The Hamiltonian used …
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Effects of conjugated oligoelectrolytes on cell transformation
… of applications. Previous work has demonstrated conjugated oligoelectrolytes (COEs) neutralize the surface charge of bacterial cells and increase membrane permeability, which can potenitally increase their competence in accepting exogenous DNA. This study tested the effect of the COE DSSN+ …
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Synthesis, Characterization and Device Studies of Conjugated Foldamers
Conjugated polymers have found a wide range of electronic applications in last few decades due to their superior combination of optoelectronic, mechanical properties, and solution processability. In the past few years, significant advancement has been achieved in developing organic semiconductors …
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