Controlling Chain Conformation in Conjugated Polymers Using Defect Inclusion Strategies

2011 ◽  
Vol 133 (26) ◽  
pp. 10155-10160 ◽  
Author(s):  
Giannis Bounos ◽  
Subhadip Ghosh ◽  
Albert K. Lee ◽  
Kyle N. Plunkett ◽  
Kateri H. DuBay ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Chain Conformation

Manipulation of Chain Conformation for Optimum Charge-Transport Pathways in Conjugated Polymers

2017 ◽  
Vol 9 (27) ◽  
pp. 22757-22763 ◽  
Author(s):  
Seolhee Jeon ◽  
Jung Hun Lee ◽  
Jai Il Park ◽  
Bonghyun Jo ◽  
Dong Ryeol Whang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Charge Transport ◽  
Chain Conformation ◽  
Transport Pathways ◽  
Optimum Charge

Influence of Backbone Rigidness on Single Chain Conformation of Thiophene-Based Conjugated Polymers

2013 ◽  
Vol 117 (16) ◽  
pp. 4461-4467 ◽  
Author(s):  
Zhongjian Hu ◽  
Jianhua Liu ◽  
Lauren Simón-Bower ◽  
Lei Zhai ◽  
Andre J. Gesquiere
Keyword(s):  
Conjugated Polymers ◽  
Chain Conformation ◽  
Single Chain

scholarly journals Relating Chain Conformation to the Density of States and Charge Transport in Conjugated Polymers: The Role of the β -phase in Poly(9,9-dioctylfluorene)

2019 ◽  
Vol 9 (2) ◽  
Author(s):  
Xingyuan Shi ◽  
Vojtech Nádaždy ◽  
Aleksandr Perevedentsev ◽  
Jarvist M. Frost ◽  
Xuhua Wang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Charge Transport ◽  
Density Of States ◽  
Chain Conformation ◽  
Β Phase

Electronic structure studies of conducting polymers by electron energy-loss spectroscopy

1996 ◽  
Vol 54 ◽  
pp. 160-161
Author(s):  
J. Fink
Keyword(s):  
Electronic Structure ◽  
Conducting Polymers ◽  
Conjugated Polymers ◽  
Electron Acceptors ◽  
Electron Donors ◽  
Light Emitting ◽  
One Dimensional ◽  
New Class ◽  
Electrical Conductivities ◽  
Electron Energy Loss

Conducting polymers comprises a new class of materials achieving electrical conductivities which rival those of the best metals. The parent compounds (conjugated polymers) are quasi-one-dimensional semiconductors. These polymers can be doped by electron acceptors or electron donors. The prototype of these materials is polyacetylene (PA). There are various other conjugated polymers such as polyparaphenylene, polyphenylenevinylene, polypoyrrole or polythiophene. The doped systems, i.e. the conducting polymers, have intersting potential technological applications such as replacement of conventional metals in electronic shielding and antistatic equipment, rechargable batteries, and flexible light emitting diodes.Although these systems have been investigated almost 20 years, the electronic structure of the doped metallic systems is not clear and even the reason for the gap in undoped semiconducting systems is under discussion.

Oriented Luminescent Nanostructures From Single Molecules Of Conjugated Polymers

2003 ◽  
Vol 771 ◽  
Author(s):  
Adosh Mehta ◽  
Pradeep Kumar ◽  
Jie Zheng ◽  
Robert M. Dickson ◽  
Bobby Sumpter ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Polarization Anisotropy ◽  
Emission Pattern ◽  
Spectral Signatures ◽  
Dipole Emission ◽  
Ink Jet ◽  
Molecular Scale ◽  
Jet Printing ◽  
Photochemical Stability ◽  
Printing Techniques

AbstractDipole emission pattern imaging experiments on single chains of common conjugated polymers (solubilized poly phenylene vinylenes) isolated by ink-jet printing techniques have revealed surprising uniformity in transition moment orientation perpendicular to the support substrate. In addition to uniform orientation, these species show a number of striking differences in photochemical stability, polarization anisotropy,[1] and spectral signatures[2] with respect to similar (well-studied) molecules dispersed in dilute thin-films. Combined with molecular mechanics simulation, these results point to a structural picture of a folded macromolecule as a highly ordered cylindrical nanostructure whose long-axis (approximately collinear with the conjugation axis) is oriented, by an electrostatic interaction, perpendicular to the coverglass substrate. These results suggest a number of important applications in nanoscale photonics and molecular-scale optoelectronics.

Toward highly photoluminescent and bipolar charge-transporting conjugated polymers

2000 ◽  
Vol 154 (1) ◽  
pp. 245-252 ◽  
Author(s):  
Zhonghua Peng ◽  
Yongchun Pan ◽  
Bubin Xu ◽  
Jianheng Zhang
Keyword(s):  
Conjugated Polymers ◽  
Bipolar Charge

Direct Observation of Chain Lengths and Conformations in Oligofluorene Distributions from Controlled Polymerization by Double Electron-Electron Resonance

2019 ◽  
Author(s):  
Dennis Bücker ◽  
Annika Sickinger ◽  
Julian D. Ruiz Perez ◽  
Manuel Oestringer ◽  
Stefan Mecking ◽  
...  
Keyword(s):  
Chain Length ◽  
Length Distribution ◽  
Catalyst System ◽  
Chain Conformation ◽  
Controlled Polymerization ◽  
Chain Length Distribution ◽  
Electron Resonance ◽  
Double Electron ◽  
The Individual ◽  
Double Electron Electron Resonance

Synthetic polymers are mixtures of different length chains, and their chain length and chain conformation is often experimentally characterized by ensemble averages. We demonstrate that Double-Electron-Electron-Resonance (DEER) spectroscopy can reveal the chain length distribution, and chain conformation and flexibility of the individual n-mers in oligo-(9,9-dioctylfluorene) from controlled Suzuki-Miyaura Coupling Polymerization (cSMCP). The required spin-labeled chain ends were introduced efficiently via a TEMPO-substituted initiator and chain terminating agent, respectively, with an in situ catalyst system. Individual precise chain length oligomers as reference materials were obtained by a stepwise approach. Chain length distribution, chain conformation and flexibility can also be accessed within poly(fluorene) nanoparticles.

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