Conformations and Electronic Structures of New Conjugated Polymers Based on Poly(cyclopentadienylene) and Polysilole

1995 ◽  
Vol 28 (14) ◽  
pp. 4991-4995 ◽  
Author(s):  
Sung Y. Hong ◽  
Dennis S. Marynick
Keyword(s):  
Conjugated Polymers ◽  
Electronic Structures

Effect of conjugation pathway on electronic structures in p-π* conjugated polymers with fused borepin units

2021 ◽  
Author(s):  
Yohei Adachi ◽  
Fuka Arai ◽  
Mitsuru Sakabe ◽  
Joji Ohshita
Keyword(s):  
Conjugated Polymers ◽  
Electronic Structures ◽  
Orbital Interaction ◽  
Conjugated Materials

Among conjugated materials, the p-π* conjugated polymers have attracted much attention due to their unique electronic structures derived from the orbital interaction between the empty p-orbital on boron and the...

Color tuning of alternating conjugated polymers composed of pentaazaphenalene by modulating their unique electronic structures involving isolated-LUMOs

2016 ◽  
Vol 7 (22) ◽  
pp. 3674-3680 ◽  
Author(s):  
Hiroyuki Watanabe ◽  
Masataka Hirose ◽  
Kazuyoshi Tanaka ◽  
Kazuo Tanaka ◽  
Yoshiki Chujo
Keyword(s):  
Conjugated Polymers ◽  
Electronic Structures ◽  
Polymer Solutions ◽  
Color Tuning ◽  
Conjugated Systems

Pentaazaphenalene-containing polymers with unique conjugated systems were synthesized. Various colors can be observed from the polymer solutions.

EXCITONS ON A 1D PERIODIC CONJUGATED POLYMER CHAIN: TWO ELECTRONIC STRUCTURES OF POLYDIACETYLENE CHAINS

2001 ◽  
Vol 15 (28n30) ◽  
pp. 3593-3596 ◽  
Author(s):  
C. LAPERSONNE-MEYER
Keyword(s):  
Quantum Yield ◽  
Conjugated Polymers ◽  
Electronic Structures ◽  
Conjugated Polymer ◽  
Radiative Lifetime ◽  
Exciton State ◽  
Fluorescence Yield ◽  
Radiative Processes ◽  
Exciton Lifetime ◽  
Fluorescent Quantum Yield

Crystalline polydiacetylenes (PDA) provide a model system for conjugated polymers. Monomer crystals where the polymer content is very low give access to the electronic structure of a 1D straight periodic isolated chain. PDA are known to exist as crystals in two electronic structures, the so-called 'blue' and 'red' phases. In 3BCMU crystals, blue and red chains coexist, so that the electronic properties of both types of chains in the same environment can be compared. In both cases fluorescence originates from the 1 B u exciton state. The blue exciton lifetime is 140 fs, its fluorescence quantum yield is small (10-4) and the relaxation is dominated by non radiative processes via low lying A g states as in polyenes. On the contrary, for red chains the exciton state is highly fluorescent (quantum yield 0.30), its lifetime is 52 ps at 15 K, implying a short radiative lifetime <100 ps. Recent results on the temperature dependence of lifetime and fluorescence yield imply the presence of states, thermally accessible from the exciton state, but non radiant to the ground state. This is consistent with a non planar conformation of the chain.

The electronic and transport properties of two-dimensional conjugated polymer networks including disorder

Nanoscale ◽  
2016 ◽  
Vol 8 (3) ◽  
pp. 1642-1651 ◽  
Author(s):  
Jean-Joseph Adjizian ◽  
Aurélien Lherbier ◽  
Simon M.-M. Dubois ◽  
Andrés Rafael Botello-Méndez ◽  
Jean-Christophe Charlier
Keyword(s):  
Conjugated Polymers ◽  
Transport Properties ◽  
Electronic Structures ◽  
Conjugated Polymer ◽  
Polymer Networks ◽  
Two Dimensional

Two-dimensional conjugated polymers exhibit electronic structures analogous to that of graphene with the peculiarity of π–π* bands which are fully symmetric. Here we report their electronic and transport properties in the presence of defects.

Epindolidione-Based Conjugated Polymers: Synthesis, Electronic Structures, and Charge Transport Properties

2015 ◽  
Vol 8 (6) ◽  
pp. 3714-3718 ◽  
Author(s):  
Chi-Yuan Yang ◽  
Ke Shi ◽  
Ting Lei ◽  
Jue Wang ◽  
Xiao-Ye Wang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Charge Transport ◽  
Transport Properties ◽  
Electronic Structures
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