文献类型：期刊文献

英文题名：In-situ controllable synthesis of carbon dots for patterned fluorescent wood films rapid fabrication strategy

作者：Chen, Xueqi[1] Zhang, Jie[1] Zhang, Lei[1] Tang, Qiheng[1] Chen, Yongping[1] Guo, Wenjing[1] Chang, Liang[1,2]

第一作者：Chen, Xueqi

通信作者：Chang, L[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Wood Composites Lab, Beijing, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2024

外文期刊名：AGGREGATE

收录：EI(收录号：20240715534038);Scopus(收录号：2-s2.0-85184418600);WOS:【ESCI(收录号:WOS:001157676900001)】；

基金：The authors acknowledge the support from the Special Fund of the Chinese Central Government for Basic Scientific Research Operations in Commonwealth Research Institutes (CAFYBB2021ZB004).

语种：英文

外文关键词：carbon dots; fluorescent pattern; information encryption; in-situ synthesis; wood film

摘要：Fluorescent-patterned materials are widely used in information storage and encryption. However, preparing a patterned fluorescent display on a matrix currently requires a time-consuming (hours or even days) and complex multi-step process. Herein, a rapid and mild technique developed for the in-situ controllable synthesis of fluorescent nitrogen-doped carbon dots (NCDs) on eco-friendly transparent wood films (TEMPO-oxidized carboxyl wood film [TOWF]) within a few minutes was developed. A wood skeleton was employed as the carbon precursor for NCD synthesis as well as the matrix for the uniform and controlled distribution of NCDs. Moreover, the in-situ synthesis mechanism for preparing NCDs in TOWF was proposed. The resulting fluorescent wood films have excellent tensile strength (310.00 +/- 15.57 MPa), high transmittance (76.2%), high haze (95.0%), UV-blocking properties in the full ultraviolet (UV) range, and fluorescent performance that can be modified by changing the heating parameters. Fluorescent patterning was simply achieved by regulating the in-situ NCD synthesis regions, and the fluorescent patterns were formed within 10 s. These fluorescent-patterned wood films can effectively store and encrypt information, and they can interact with external information through a transparent matrix. This work provides a green and efficient strategy for fabricating fluorescent information storage and encryption materials. An environmentally friendly, facile, and efficient strategy for the in-situ controllable synthesis of nitrogen-doped carbon dots on transparent wood films is presented. It is potentially applicable to the construction of patterned fluorescent materials for information interaction, storage, and encryption. image