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Photo/Mechanical/Acidic Multi-Stimuli Responses and Information Encryption Design of Acylhydrazone Derivative.
Ye, Yang; Wang, Dechen; Zhang, Yaru; Zhou, Xiaomeng; Du, Haowen; Yang, Sen; Bao, Ying; Hao, Hongxun; Xie, Chuang.
Afiliação
  • Ye Y; School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
  • Wang D; School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
  • Zhang Y; School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
  • Zhou X; School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
  • Du H; School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
  • Yang S; School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
  • Bao Y; School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
  • Hao H; National Engineering Research Center of Industrial Crystallization Technology, Tianjin University, Tianjin, 300072, China.
  • Xie C; School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
Chemistry ; 30(36): e202401171, 2024 Jun 25.
Article em En | MEDLINE | ID: mdl-38646836
ABSTRACT
Stimuli-responsive crystalline materials have received much attention for being potential candidates of smart materials. However, the occurrence of polymorphism-driven stimuli responses in crystalline materials remains interesting but rare. Herein, three polymorphs of an acylhydrazone derivative, N'-[(E)-(1-benzofuran-2-yl) methylidene] pyridine -4-carbohydrazide (BFMP) were prepared. Form-1 undergoes a photomechanical response via E→Z photoisomerization under UV irradiation, accompanied by a decrease in fluorescence intensity and a change from colorless to yellow. Two types of Z→E thermal isomerization mechanisms with significant differences in conversion rate were observed at different temperatures in form-1. The solid-melt-solid transition has a faster conversion rate compared to the solid-solid transition due to freedom from lattice confinement. The transition from form-2 to form-3 can be achieved under grinding, coupled with a significant decrease in fluorescence intensity. The similar molecular stacking pattern of form-2 and form-3 provides a structural basis for the grinding-induced crystalline transition behavior. In addition, the presence of the pyridine moiety imparts an acidochromic property. The combination of photochromism and acidochromism explores the possible applications of acylhydrazone derivatives in information encryption.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article