A Highly Stable and Tunable Visible-Near-IR Electrochromic All-in-One Gel Device

Ling, Huan1,2; Su, Fengyu2,3,4; Tian, Yanqing2; Luo, Dan3; Liu, Yan Jun3; Sun, Xiao Wei3

2020-02-03

10.1002/cptc.201900284

ChemPhotoChem   影响因子和分区

2367-0932

Energy saving is a global topic of critical importance. Electrochromic devices (ECDs) could be used to control energy flow by modulating the light absorption reversibly upon application of a small potential bias. Herein, a visible-NIR dual-band ECD based on the viologen analogue 4, 4 '-(thiophene-2, 5-diyl) bis(1-methylpyridin-1-ium) diiodide (TMP) was assembled with a simple all-in-one configuration. The TMP-based gel ECD possesses high dynamic contrast (81.7 % at 570 nm, 68.6 % at 835 nm, 62.8 % at 910 nm and 55.3 % at 1046 nm), excellent cyclic stability (70.6 % of T at 570 nm maintained after 25000 cycles at 1.4 V), and low power consumption (15.2 mJ/cm(2) to complete the coloring process, 2.5 mW/cm(2) to keep color and low transmittance). Remarkably, the absorption of visible and NIR light could be selectively adjusted by varying the coloring time. For comparison, a dimethyl viologen (DMV)-based gel ECD was fabricated, and the SAR (structure-activity relationship) was established by cyclic voltammetry, density functional theory (DFT) calculations, and other electrochromic performance parameters.

density functional calculations electrochromic devices gel-based devices tunability viologens

SCI

英语

通讯

High-level university construction fund for SUSTech[G01256018]

Chemistry

Chemistry, Physical

WOS:000510548300001

WILEY-V C H VERLAG GMBH

Web of Science

1.Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China

Ling, Huan,Su, Fengyu,Tian, Yanqing,et al. A Highly Stable and Tunable Visible-Near-IR Electrochromic All-in-One Gel Device[J]. ChemPhotoChem,2020,4(5):357-365.

Ling, Huan,Su, Fengyu,Tian, Yanqing,Luo, Dan,Liu, Yan Jun,&Sun, Xiao Wei.(2020).A Highly Stable and Tunable Visible-Near-IR Electrochromic All-in-One Gel Device.ChemPhotoChem,4(5),357-365.

Ling, Huan,et al."A Highly Stable and Tunable Visible-Near-IR Electrochromic All-in-One Gel Device".ChemPhotoChem 4.5(2020):357-365.