Synthesis of poly(p-phenylene vinylene)- and poly(phenylene ethynylene)-based polymers containingp-terphenyl in the main chain with alkoxyphenyl side groups

2002 ◽  
Vol 40 (15) ◽  
pp. 2591-2600 ◽  
Author(s):  
Ioakim K. Spiliopoulos ◽  
John A. Mikroyannidis
Keyword(s):  
Main Chain ◽  
Phenylene Vinylene ◽  
Phenylene Ethynylene

Side Chain Influence on Main Chain Orientation of PPV-Type Oligomers

1999 ◽  
Vol 598 ◽  
Author(s):  
Ruth Müllner ◽  
Laurence Noirez ◽  
Egbert Zojer ◽  
Franz Stelzer ◽  
Günther Leising
Keyword(s):  
Magnetic Field ◽  
Neutron Diffraction ◽  
Main Chain ◽  
Side Chain ◽  
Phenylene Vinylene ◽  
Spectroscopic Methods ◽  
Polarized Optical Microscopy ◽  
Chain Orientation ◽  
H Nmr ◽  
Ft Ir

ABSTRACTOligo (p-phenylene vinylene)s OPV were synthesized having cyanobiphenyloxy-groups bonded to the vinylene double bonds via alkylene spacers. A Pd(0)-reaction was used to synthesize the oligomers starting with the dibromo-substituted benzene and the alkenyloxy-biphenyl-nitrile. The orientation of the mesogens by a magnetic field and their influence on the orientation of the main chain was investigated by means of neutron diffraction ND. Data on the photophysics of the oligomers were gained using several spectroscopic methods such as UV/VIS, polarized optical microscopy POM, SEC, 1H-NMR, FT-IR.

Luminescent poly(phenylene vinylene) derivatives withm-terphenyl or 2,6-diphenylpyridine kinked segments along the main chain: Synthesis, characterization, and stimulated emission

2004 ◽  
Vol 42 (9) ◽  
pp. 2214-2224 ◽  
Author(s):  
Panayiotis Karastatiris ◽  
John A. Mikroyannidis ◽  
Ioakim K. Spiliopoulos ◽  
Mihalis Fakis ◽  
Peter Persephonis
Keyword(s):  
Main Chain ◽  
Stimulated Emission ◽  
Phenylene Vinylene ◽  
Chain Synthesis

Effect of Varying Thiophene Units on Charge-Transport and Photovoltaic Properties of Poly(phenylene ethynylene)-alt-poly(phenylene vinylene) Polymers

2014 ◽  
Vol 215 (15) ◽  
pp. 1473-1484 ◽  
Author(s):  
Getachew Adam ◽  
Teketel Yohannes ◽  
Matthew White ◽  
Alberto Montaigne ◽  
Christoph Ulbricht ◽  
...  
Keyword(s):  
Charge Transport ◽  
Phenylene Vinylene ◽  
Phenylene Ethynylene ◽  
Photovoltaic Properties

Explaining the Cyclic Voltammetry of a Poly(1,4-phenylene-ethynylene)-alt-poly(1,4-phenylene-vinylene) Copolymer upon Oxidation by using Spectroscopic Techniques

ChemPhysChem ◽  
2016 ◽  
Vol 18 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Christina Enengl ◽  
Sandra Enengl ◽  
Nassima Bouguerra ◽  
Marek Havlicek ◽  
Helmut Neugebauer ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Phenylene Vinylene ◽  
Spectroscopic Techniques ◽  
Phenylene Ethynylene

Mixed Alkyl- and Alkoxy-Substituted Poly[(phenylene ethynylene)-alt-(phenylene vinylene)] Hybrid Polymers: Synthesis and Photophysical Properties

2004 ◽  
Vol 205 (15) ◽  
pp. 2105-2115 ◽  
Author(s):  
Daniel Ayuk Mbi Egbe ◽  
Stephan Sell ◽  
Christoph Ulbricht ◽  
Eckhard Birckner ◽  
Ulrich-Walter Grummt
Keyword(s):  
Photophysical Properties ◽  
Phenylene Vinylene ◽  
Phenylene Ethynylene ◽  
Hybrid Polymers

Frequency Resolved Photoluminescence (PL), Delayed Fluorescence and Triplet-Triplet Annihilation In 7Φ-Conjugated Polymers

1999 ◽  
Vol 561 ◽  
Author(s):  
J. Partee ◽  
E. L. Frankevich ◽  
B. Uhlhom ◽  
J. Shinar ◽  
Y. Ding ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Strong Evidence ◽  
Delayed Fluorescence ◽  
Phenylene Vinylene ◽  
Total Emission ◽  
Phenylene Ethynylene ◽  
Frozen Solutions ◽  
Triplet Triplet Annihilation

ABSTRACTThe delayed fluorescence of poly(p-phenylene vinylene) (PPV) and poly(p-phenylene ethynylene) (PPE) derivative solids and frozen solutions at 20 K is described. It provides strong evidence for triplet-triplet annihilation to singlets excitons accounting for up to ∼3% of the total emission in PPV films and ∼1.5% in PPE powder. It also yields triplet lifetimes of 70 and 110 μs in PPV films and frozen solutions, and ∼200 and ∼500 μs in PPE powder and frozen solutions, respectively.

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