Color-tunable, time-dependent, temperature and humidity-responsive afterglow from hyaluronic acid-based films

• Published in: Dyes and pigments Vol. 212; p. 111113
• Main Authors: Shen, Zhuoyao, Yan, Xilong, Cui, Siqian, Bo, Changchang, Liu, Jiayi, Wang, Bowei, Li, Yang, Chen, Ligong
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.04.2023
• Subjects: Color-tunable afterglow; Dual-mode afterglow material; Humidity-responsive afterglow; Temperature-responsive afterglow; Time-dependent afterglow; Color-tunable afterglow; Dual-mode afterglow material; Time-dependent afterglow; Humidity-responsive afterglow; Temperature-responsive afterglow
• ISSN: 0143-7208; 1873-3743
• DOI: 10.1016/j.dyepig.2023.111113

Pure organic afterglow materials with color-tunable and multiple stimuli-responsive afterglow are attractive but extremely scarce. Herein, a convenient strategy is reported to construct a series of hyaluronic acid (HA) -based afterglow films with color-tunable (from cyan to red) and multiple stimuli-responsive afterglow emissions (τafterglow, up to 971.05 ms). Disruption of hydrogen bonds and quenching of triplet excitons induced humidity-responsive afterglow, while time-dependent afterglow originates from diverse emissive species with different lifetimes. Moreover, due to the existence of dual-mode afterglow, the HA-based afterglow film doped with 9-aminophenanthrene (Aphe@HA) is endowed with temperature-responsive afterglow, and the Commission Internationale de l'Eclairage (CIE) coordinates of its colors could be linearly adjusted among yellow, white and blue from 298 K to 443 K. Considering the distinctive temperature-responsive afterglow, Aphe@HA can act as a temperature sensor in three-way catalytic converters (TWCs) and curling tongs. In addition, the color-tunable and humidity-responsive afterglow emissions of the HA-based films facilitate their applications in anti-counterfeiting and information encryption. [Display omitted] •A series of multicolor hyaluronic acid-based films were prepared.•ANS@HA exhibits unique time-dependent afterglow.•Aphe@HA is endowed with temperature-responsive afterglow.•Humidity-responsive afterglow was achieved in all the HA-based afterglow films.•They display promising potential in anti-counterfeiting and temperature sensing.