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Dual band modulation of visible and near infrared light independently with electrochromic poly(3 methyl 3,4 dihydro 2H thieno[3,4 b][1,4]dioxepine)

XIAOMING CHEN1,* , JINGYAN ZHANG1

Affiliation

  1. Anhui Key Laboratory of Advanced Building Materials, School of Materials & Chemical Engineering, Anhui Jianzhu University, Hefei 230601, P. R. China

Abstract

Poly(3-methyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine) (PProDOT-s-Me) was synthesized through electrochemical polymerization. The surprising feature of the electrodeposited PProDOT-s-Me film is that it can tune absorption in visible region (380-780 nm) and near-infrared (780-1100 nm) independently under different applied potentials: Vis absorbable / NIR transmissive (-1.5 V), Vis absorbable / NIR absorbable (0.1 V) and Vis transmissive / NIR absorbable (1.4 V). It is in-teresting because PProDOT-s-Me could be potential candidate in smart windows for thermal and light control in buildings in three modes: weak light / warm (-1.5 V), weak light / cool (0.1 V) and strong light / cool (1.4 V).

Keywords

Visible, Near-infrared, Electrochromic polymer.

Citation

XIAOMING CHEN, JINGYAN ZHANG, Dual band modulation of visible and near infrared light independently with electrochromic poly(3 methyl 3,4 dihydro 2H thieno[3,4 b][1,4]dioxepine), Optoelectronics and Advanced Materials - Rapid Communications, 14, 5-6, May-June 2020, pp.203-207 (2020).

Submitted at: July 2, 2019

Accepted at: June 16, 2020