Synthesis, characterization, and photophysical properties of novel poly(p-phenylene vinylene) derivatives with conjugated thiophene as side chains

2011 ◽  
Vol 120 (6) ◽  
pp. 3387-3394 ◽  
Author(s):  
Tianpeng Ding ◽  
Bin Zhao ◽  
Ping Shen ◽  
Junjian Lu ◽  
Hui Li ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Phenylene Vinylene ◽  
Side Chains

Functionalized polynorbornenes with organosilicon groups in the side chains. Synthesis and photophysical properties

2016 ◽  
Vol 86 (1) ◽  
pp. 116-124 ◽  
Author(s):  
Е. О. Platonova ◽  
Т. А. Kovylina ◽  
Е. V. Baranov ◽  
А. V. Arapova ◽  
L. N. Bochkarev
Keyword(s):  
Photophysical Properties ◽  
Side Chains

Solid State Structure and Photoluminescence properties of poly(2,5-dialkoxy-p-phenyleneethynylene)s

1995 ◽  
Vol 413 ◽  
Author(s):  
Christoph Weder ◽  
Michael J. Wagner ◽  
Mark S. Wrighton
Keyword(s):  
Solid State ◽  
Long Range ◽  
Photophysical Properties ◽  
Significant Degree ◽  
Range Order ◽  
Quantum Yields ◽  
Side Chains ◽  
Long Range Order ◽  
Rigid Rod ◽  
Covalently Linked

ABSTRACTIn an effort to better understand the relationship between molecular structure and photophysical properties, we have prepared and investigated a series of novel poly(2,5-dialkoxy-p-phenyleneethynylene)s. Wide angle X-ray diffraction measurements show that the supramolecular structure can be easily and significantly influenced by the nature of substituents covalently linked to the rigid-rod polymer main chains. Polymers which have sterically hindered side chains are essentially amorphous, while those with only linear side chains can form lamellar structures with a significant degree of long-range order. High photoluminescence quantum yields, up to 0.86 in solution and 0.36 in the solid state, have been measured. While the solution quantum yields are independent of the functionalization, solid state quantum efficiencies were found to be related to the degree of long-range order in the samples. In samples with a high degree of long-range order, the close proximity of the coplanar oriented polymer backbones is assumed to lead to the formation of eximer complexes which provide non emissive decay channels and, hence, result in comparable low photoluminescence quantum yields. In samples that adopt only a small extent of long-range order, the rigid-rod conjugated polymer backbones behave as if they were ‘dissolved’ in a hydrocarbon solvent and consequently high quantum efficiencies are obtained. Preliminary results indicate the suitability of these polymers as the emitting layer in electroluminescent devices.

Synthesis and Photophysical Properties of a Hyperbranched Trimethylsilyl Substituted Poly(phenylene vinylene) Derivative

2020 ◽  
Vol 20 (8) ◽  
pp. 4990-4993
Author(s):  
Kyeongmin Kim ◽  
Taek Ahn
Keyword(s):  
Absorption Maximum ◽  
Photophysical Properties ◽  
Phenylene Vinylene ◽  
Excimer Emission ◽  
Good Thermal Stability ◽  
Long Wavelength ◽  
Good Solubility ◽  
Wavelength Emission ◽  
Linear Poly ◽  
Blue Photoluminescence

A novel trimethylsilyl substituted hyperbranched conjugated poly(phenylene vinylene) (Hyper-PBTMS-PPV) was synthesized through the Wittig polycondensation polymerization. Hyper-PBTMSPPV has good solubility in common organic solvents and showed good thermal stability up to 402 °C with less than 5 wt% weight loss. The photophysical properties of Hyper-PBTMS-PPV film are investigated and compared with trimethylsilyl-containing linear poly(1,4-phenylene vinylene) (Linear-PBTMS-PPV). An absorption maximum of Hyper-PBTMS-PPV film was determined at 335 nm which was far blue-shifted than that of Linear-PBTMS-PPV (380 nm). Hyper-PBTMS-PPV film showed blue photoluminescence (PL) peak at 449 nm. In addition, Hyper-PBTMS-PPV film exhibited almost no long wavelength emission peaks even the film was annealed at 120 °C for 30 min in air condition. High PL efficiency (Φfilm = 0.80) and no aggregate or excimer emission of Hyper-PBTMS-PPV film are due to the inhibition of intramolecular or intermolecular interaction by the introduction of the hyperbranched network into the trimethylsilyl-containing poly(phenylene vinylene) backbone.

Enhanced photovoltaic cells efficiency via incorporation of high electron-deficient oxadiazole moieties on side chains of poly(phenylene vinylene)s and poly(fluorene)s

2006 ◽  
Vol 156 (14-15) ◽  
pp. 949-953 ◽  
Author(s):  
Szu-Po Huang ◽  
Jin-Long Liao ◽  
Hao-En Tseng ◽  
Tzu-Hao Jen ◽  
Jing-Yang Liou ◽  
...  
Keyword(s):  
Photovoltaic Cells ◽  
Phenylene Vinylene ◽  
Side Chains ◽  
High Electron

scholarly journals Thioalkyl- and Sulfone-Substituted Poly(p-Phenylene Vinylene)s

2018 ◽  
Author(s):  
Martina Rimmele ◽  
Klaus Ableidinger ◽  
Adam V. Marsh ◽  
Nathan J. Cheetham ◽  
M. Josef Taublaender ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Low Cost ◽  
Photophysical Properties ◽  
Quantum Yields ◽  
Phenylene Vinylene ◽  
Structural Variations ◽  
Interesting Class ◽  
New Applications ◽  
Exceptional Stability

Poly(p-phenylene vinylene)s (PPVs) have been studied for decades, but research on this interesting class of conjugated polymers is far from being completed. New applications like in bioimaging keep emerging and even simple structural variations are still waiting to be explored. Surprisingly, not even dithioalkyl-substituted PPVs (S-PPVs) have been reported in the peer-reviewed literature, although the corresponding dialkoxy-substituted PPVs (O-PPVs) like MEH-PPV or MDMO-PPV are most frequently used and although thioalkyl substituents can improve the material properties significantly. We herein report the development of a highly efficient, scalable two-step synthesis of Gilch monomers for S-PPVs starting from low-cost 1,4-diiodobenzene. A low-temperature polymerization protocol has been developed for these monomers, affording high-molecular weight S-PPVs in excellent yields. The thermal, electrochemical, and photophysical properties of S-PPVs are reported to highlight the potential of these polymers. Furthermore, treatment with dimethyldioxirane is demonstrated to result in rapid conversion into sulfone-substituted PPVs (SO<sub>2</sub>-PPVs), introducing a route to high-molecular weight SO<sub>2</sub>-PPVs with exceptional stability and solid-state photoluminescence quantum yields of up to 0.46.

Pyrolysis of poly(phenylene vinylene)s with polycaprolactone side chains

2008 ◽  
Vol 93 (5) ◽  
pp. 904-909 ◽  
Author(s):  
Yusuf Nur ◽  
Demet G. Colak ◽  
Ioan Cianga ◽  
Yusuf Yagci ◽  
Jale Hacaloglu
Keyword(s):  
Phenylene Vinylene ◽  
Side Chains

Synthesis, photophysical properties and microphase separation of all-conjugated diblock copolymers with hydrophilic side chains

2012 ◽  
Vol 62 (2) ◽  
pp. 204-209 ◽  
Author(s):  
Xueqin Zhang ◽  
Weiwei Yang ◽  
Fan Kong ◽  
Hong Yang ◽  
Baoping Lin
Keyword(s):  
Diblock Copolymers ◽  
Microphase Separation ◽  
Photophysical Properties ◽  
Side Chains
Sign in / Sign up

Export Citation Format

Share Document