Luminescent Transparent Wood Based on Lignin-Derived Carbon Dots as a Building Material for Dual-Channel, Real-Time, and Visual Detection of Formaldehyde Gas

• DOI: 10.1021/acsami.0c10240
• Publication Date: 2020-07-14T17:52:47Z
• Authors: Yushan Liu; Haiyue Yang; Chunhui Ma; Sha Luo; Mingcong Xu; Zhenwei Wu; Wei Li; Shouxin Liu
• Keywords: Surface Modification

Formaldehyde (FA) is a widespread indoor air pollutant, and its efficient detection major industrial challenge. The development of building material with real-time visual self-detection FA gas highly desirable for meeting both construction human health demands. Herein, luminescent transparent wood (LTW) as the was developed dual-channel, real-time, gas. It fabricated by encapsulating multicolor lignin-derived carbon dots (CDs) poly(vinyl alcohol) (PVA) into delignified framework. exhibited 85% optical transmittance, tunable room-temperature phosphorescence (RTP), ratiometric fluorescence (FL) emission. luminescence attributed to different CD graphitization surface functionalization. color-responsive FL delayed RTP detections were displayed over range 20-1500 μM (R2 = 0.966, LOD 1.08 nM) 20-2000 0.977, 45.8 nM), respectively. LTW also used an encapsulation film on UV-emitting InGaN chip form white light-emitting diodes, indicating feasibility FA-responsive planar light source. operational notion functional can expand applications new fields such stimuli-responsive light-transmitting window or sources while monitoring pollutants, temperature, humidity.