共 50 条
An electrochromic polymer based on cyclopenta[2,1-b;3,4-b′]dithiophene: Effect of a single atom alteration on the electrochemical and optical properties of the polymer backbone
被引:5
|作者:
Tutuncu, Esra
[1
]
Varlik, Bengisu
[2
]
Kesimal, Busra
[2
]
Cihaner, Atilla
[2
]
Ozkut, Merve Icli
[1
]
机构:
[1] Van Yuzuncu Yil Univ, Fac Engn & Architecture, Dept Chem Engn, TR-65080 Van, Turkey
[2] Atilim Univ, Atilim Optoelect Mat & Solar Energy Lab ATOMSEL, Dept Chem Engn & Appl Chem, TR-06836 Ankara, Turkey
来源:
关键词:
Cyclopentadithiophene;
Silylenebithiophene;
3,4-Propylenedioxythiophene;
Hybrid conjugated polymer;
Structural design;
CONJUGATED POLYMERS;
LOW-BANDGAP;
COPOLYMERS;
GAP;
D O I:
10.1016/j.synthmet.2020.116370
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
An electrochromic polymer, namely "poly(2,6-(3,3-didecyl-3,4-dihydro-2H-thieno [3,4-b] [1,4]dioxepin-6-yl)-4,4-dioctyl-4H-cyclopenta[2,1-b;3,4-b']dithiophene)" (P1), was electrochemically synthesized successfully, and its electrochemical and optical properties were investigated. The band gap of the polymer P1 was calculated as 1.77 eV with -5.45 eV Highest Occupied Molecular Orbital (HOMO) and -3.68 eV Lowest Unoccupied Molecular Orbital (LUMO) energy levels. The polymer P1 is bluish purple when neutralized and highly transparent greenish purple when oxidized. This color change was observed around 1.4 s between its redox states and optical contrast ratio was found to be as 49 % and 53 % with 234 cm(2)/C and 239 cm(2)/C coloration efficiencies at 590 nm and 634 nm, respectively. Moreover, the properties of this polymer were compared to its analogues and also during this comparison the effect of alteration of a single atom in the pendant unit was tried to be understood.
引用
收藏
页数:5
相关论文