Red colored CPL emission of chiral 1,2-DACH-based polymers via chiral transfer of the conjugated chain backbone structure

2015 ◽  
Vol 6 (38) ◽  
pp. 6802-6805 ◽  
Author(s):  
Fei Li ◽  
Yuxiang Wang ◽  
Ziyu Wang ◽  
Yixiang Cheng ◽  
Chengjian Zhu
Keyword(s):  
Polymer Chain ◽  
Conjugated Polymer ◽  
Mirror Image ◽  
Chiral Polymers ◽  
Cotton Effects ◽  
Backbone Structure

Chiral polymers incorporating a chiral 1,2-DACH moiety and BODIPY can exhibit strong mirror image Cotton effects and emit red colored CPL signals via the effective chiral transfer of the conjugated polymer chain backbone.

CPL emission of chiral BINOL-based polymers via chiral transfer of the conjugated chain backbone structure

RSC Advances ◽  
2015 ◽  
Vol 5 (128) ◽  
pp. 105851-105854 ◽  
Author(s):  
Fei Li ◽  
Yuxiang Wang ◽  
Yuan Sheng ◽  
Guo Wei ◽  
Yixiang Cheng ◽  
...  
Keyword(s):  
Polymer Chain ◽  
Conjugated Polymer ◽  
Mirror Image ◽  
Green Color ◽  
Cotton Effects ◽  
Backbone Structure

Chiral BINOL-based polymers incorporating phenothiazine moieties can exhibit strong mirror image Cotton effects and emit green color CPL signals via effective chiral transfer of the conjugated polymer chain backbone.

Emission of a Single Conjugated Polymer Chain Isolated in Its Single Crystal Monomer Matrix

2001 ◽  
Vol 87 (8) ◽  
Author(s):  
T. Guillet ◽  
J. Berréhar ◽  
R. Grousson ◽  
J. Kovensky ◽  
C. Lapersonne-Meyer ◽  
...  
Keyword(s):  
Single Crystal ◽  
Polymer Chain ◽  
Conjugated Polymer

Optical evidence of a purely one-dimensional exciton density of states in a single conjugated polymer chain

2002 ◽  
Vol 66 (11) ◽  
Author(s):  
F. Dubin ◽  
J. Berréhar ◽  
R. Grousson ◽  
T. Guillet ◽  
C. Lapersonne-Meyer ◽  
...  
Keyword(s):  
Density Of States ◽  
Polymer Chain ◽  
Conjugated Polymer ◽  
Exciton Density ◽  
One Dimensional ◽  
Optical Evidence

Single-photon emission from a single nanoparticle consisting of a single conjugated polymer chain

2009 ◽  
Vol 159 (9-10) ◽  
pp. 805-808 ◽  
Author(s):  
Sadahiro Masuo ◽  
Tomoya Tanaka ◽  
Takumi Murakami ◽  
Akito Masuhara ◽  
Shinjiro Machida ◽  
...  
Keyword(s):  
Polymer Chain ◽  
Conjugated Polymer ◽  
Single Photon ◽  
Photon Emission ◽  
Single Photon Emission ◽  
Single Nanoparticle

Observation of microwave plasmons in one-dimensional conjugated polymer chain

2009 ◽  
Vol 94 (18) ◽  
pp. 183109
Author(s):  
B. Mondal ◽  
D. Majumdar ◽  
A. Ghosh ◽  
S. K. Saha
Keyword(s):  
Polymer Chain ◽  
Conjugated Polymer ◽  
One Dimensional

Conjugated Polymer Chain and Crystallite Orientation Induced by Vertically Aligned Carbon Nanotube Arrays

2013 ◽  
Vol 5 (18) ◽  
pp. 9043-9050 ◽  
Author(s):  
Seok-Ju Kang ◽  
Youn-Su Kim ◽  
Won Bae Kim ◽  
Dong-Yu Kim ◽  
Yong-Young Noh
Keyword(s):  
Carbon Nanotube ◽  
Polymer Chain ◽  
Conjugated Polymer ◽  
Nanotube Arrays ◽  
Crystallite Orientation ◽  
Carbon Nanotube Arrays ◽  
Vertically Aligned

scholarly journals Energy up-conversion in dilute polyfluorene solutions

2007 ◽  
Vol 5 (4) ◽  
pp. 923-930
Author(s):  
Alexander Kuehne ◽  
Allan Mackintosh ◽  
David Armstrong ◽  
Richard Pethrick
Keyword(s):  
Energy Transfer ◽  
Polymer Chain ◽  
Conjugated Polymer ◽  
Blue Emission ◽  
Dilute Solution ◽  
Highly Efficient ◽  
Localised States ◽  
Homo Lumo

AbstractPoly(9,9-dioctylfluorene) (PFO) shows highly efficient blue emission with photo excitation occurring between 340–400 nm. Here we show that PFO can in dilute solution emit at a wavelength well below that at which it is being exited. This, we propose is related to an energy transfer from conjugated parts of the polymer chain into more localised states which then emit at a lower wavelength. These localised states can be considered as defects in the conjugation of the polymer or as chain ends. These may produce quasi monomer or quasi dimer species within the chain, which will have a HOMO-LUMO gap of higher energy than the conjugated polymer. These then fluoresce at the lower wavelength; essentially causing, by energy transfer, a process of energy up-conversion.

Synthesis and Fabrication of Aligned Conjugated Polymer Thin Films

2012 ◽  
Vol 706-709 ◽  
pp. 1636-1641 ◽  
Author(s):  
Takashi Hirahara ◽  
Masahiro Yoshizawa-Fujita ◽  
Yuko Takeoka ◽  
Masahiro Rikukawa
Keyword(s):  
Functional Groups ◽  
Thermal Annealing ◽  
Conjugated Polymer ◽  
Polarized Light ◽  
Linear Dichroism ◽  
Side Chains ◽  
Absorption Region ◽  
Linearly Polarized ◽  
Cotton Effects ◽  
External Stimuli

Fluorene-thiophene copolymers having chiral and azobenzene substituents, PAzB4-T, were synthesized by the Pd-catalyzed Suzuki coupling method. We studied the aligning organization of the main chain of PAzB4-T with the activation of the attached functional groups by thermal annealing and photo-annealing processes. Circular dichroism (CD) measurements revealed that the thermally annealed PAzB4-T spin-coated films exhibited bisignate Cotton effects over the absorption regions of the polymer main chains and the azobenzene side chains due to the formation of chiral assemblies. After the photo-annealing process, which means linearly polarized light irradiation accompanied by thermal annealing, the PAzB4-T spin-coated films showed linear dichroism over the absorption region of the main chains, due to the alignment of azobenzene side chains against the electric field of the linearly polarized light. These results suggested that rigid conjugated polymers were successfully aligned by the alignment of functional groups with the external stimuli.

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