Selenophene, thiophene, and furan functionalized π-extended viologen derivatives for tunable all-in-one ECDs

Sun，Fangyuan1; Zhang，He2; Cai，Jiayi1; Su，Fengyu3,4; Tian，Yanqing1,5; Liu，Yan Jun4

2023-01-15

10.1016/j.solmat.2022.112106

SOLAR ENERGY MATERIALS AND SOLAR CELLS   Impact Factor & Quartile

0927-0248

1879-3398

π-Extended viologen derivatives of SHP, THP and FHP with selenophene, thiophene and furan units between two pyridine moieties, respectively, as chromophores, were synthesized. Compared with conventional viologen of DHP using bipyridines as the chromophore, the three compounds of SHP, THP, and FHP possess extended conjugation lengths and narrowed bandgaps. All-in-one electrochromic devices (ECDs) were assembled using these four viologen derivatives and investigated systematically. Due to the different electronic properties of the chromophores, the devices exhibited different colored states, blue, blue-violet, magenta and red. Furthermore, the electrochromic response of SHP, THP, and FHP extended into near-infrared (NIR) region due to the long conjugation as compared with that of DHP. Further, the ECDs possessing SHP, THP and FHP displayed faster response speed and relatively higher coloration efficiency than that of DHP. Among them, ECD based on FHP has shown the most excellent stability, which retains 95.7% optical contrast of its initial state after continuous working for 20000 cycles. Additionally, upon applying a switching potential, electrofluorochromic (EFC) properties of the devices based on THP and FHP were observed. This study revealed structure-property relations and demonstrated that manipulation of chromophores offers an effective route to obtain multicolor and multifunctional ECDs, which provides potential applications for colorful displays and smart windows.

All-in-one electrochromic device Electrochromism Electrofluorochromism π-Extended viologens

EI ; SCI

English

First ; Corresponding

Southern University of Science and Technology[Y01256114];

Energy & Fuels ; Materials Science ; Physics

Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000885362300003

ELSEVIER

20224613118660

Chromophores ; Electrochromic devices ; Electronic properties ; Infrared devices ; Organic pollutants ; Synthesis (chemical) ; Thiophene

Electricity: Basic Concepts and Phenomena:701.1 ; Electronic Components and Tubes:714 ; Light/Optics:741.1 ; Optical Devices and Systems:741.3 ; Chemical Reactions:802.2 ; Organic Compounds:804.1

MATERIALS SCIENCE

2-s2.0-85141763340

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Harbin,150001,China
3.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
4.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China
5.Key Laboratory of Energy Conversion and Storage Technology (Southern University of Science and Technology),Ministry of Education,Shenzhen,518055,China

Sun，Fangyuan,Zhang，He,Cai，Jiayi,et al. Selenophene, thiophene, and furan functionalized π-extended viologen derivatives for tunable all-in-one ECDs[J]. SOLAR ENERGY MATERIALS AND SOLAR CELLS,2023,250.

Sun，Fangyuan,Zhang，He,Cai，Jiayi,Su，Fengyu,Tian，Yanqing,&Liu，Yan Jun.(2023).Selenophene, thiophene, and furan functionalized π-extended viologen derivatives for tunable all-in-one ECDs.SOLAR ENERGY MATERIALS AND SOLAR CELLS,250.

Sun，Fangyuan,et al."Selenophene, thiophene, and furan functionalized π-extended viologen derivatives for tunable all-in-one ECDs".SOLAR ENERGY MATERIALS AND SOLAR CELLS 250(2023).