Naphthalimide‐Conjugated Spiropyran: Dual‐State Emission and Photo‐Responsive Dynamic Fluorescence Color for Information Encryption Application

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 14, 2025

Abstract Developing photo‐switch molecules that show fluorescence in both monomeric and aggregated states, with light‐controllable wavelength is far‐reaching a great challenge. Spiropyran (SP) has received considerable attention this field. Herein, by conjugating naphthalimide to the indole moiety of SP, new spiropyran derivative, named NMI‐SP obtained. shows dual‐state emission excellent its attributed intramolecular charge transfer character. Moreover, demonstrates obvious photochromic behavior, accompanied visible color change from yellow green THF solution, photo‐responsive orange red state. This work provides insights into design materials based on SP fluorophore highlights their potential applications digital coding information conversion.

Язык: Английский

Structure‐Dependent Fluorescent Behavior of Heterotetraarylene‐Quinolones: The Critical Role of Chemical Bond Linkages

ChemPhotoChem, Год журнала: 2025, Номер unknown

Опубликована: Апрель 24, 2025

Altering the manner in which groups are connected could offer a straightforward approach to achieving different functionality. Herein, heterotetraarylene molecules with varying bond‐linked quinoline moieties synthesized and designed investigate their differential performances. The carbon‐carbon double bonded quinolines exhibits multifunctional properties: 1) all‐visible light‐induced photochromism, 2) acidochromism, 3) acid–base gated photoswitch. Simultaneously, it achieves dual‐mode fluorescence modulation through both photoexcitation acid/base stimuli. However, by carbon single bonds exhibit divergent properties, including emission enhancement solvent‐dependent emission. This bond‐selective functional divergence enables precise customization of stimulus‐responsive simple connectivity control, establishing novel design paradigm for smart molecular systems. Furthermore, heterotetraarylene‐linked many thus allowing construction new dual‐responsive encryption system.

Язык: Английский

AIE-active D-A-D(D′) dicyanodiaryl ethylene derivatives: solvatochromism, aggregation-induced emission and high-contrast mechanofluorochromism

Journal of Luminescence, Год журнала: 2024, Номер unknown, С. 121034 - 121034

Опубликована: Дек. 1, 2024

Язык: Английский