New Molecular Photoswitch Based on the Conformational Transition of Phenothiazine Derivatives and Corresponding Triplet Emission Properties

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Янв. 13, 2025

Molecular photoswitch research has drawn much attention in the last century owing to its great potential development of smart materials. However, photoswitches suitable for constructing light-responsive luminescent materials remain limited, especially those involving triplet-state phosphorescence. Herein, we designed a novel molecular based on conformation transition phenothiazine derivatives, minimizing steric hindrance (-CH

Язык: Английский

---

Organic high-temperature afterglow materials: an advancing and impactful research area

Science China Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Язык: Английский

---

Controlling Noncovalent π–π Interactions in Dimers Toward Thermally Reversible Switching Between Monomer and Excimer Fluorescence

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 18, 2025

Abstract Thermochromic fluorescent materials (TFMs) have garnered great attention due to their unique fluorescence transition responsive temperature. However, the application of TFMs is limited defects such as low thermosensitivity and a high temperature‐responsive threshold value. In this case, work explores feasible strategy for designing TFMs. On one hand, sterically hindered unilateral tetraphenylethylene (TPE) substituent introduced into pyrene chromophore in meta‐ linkage mode. This type molecular architecture aimed at integration both aggregation‐induced emission (AIE) character isolated π–π dimer stacking, facilitating achievement contrast intensity (i.e., strongly emissive aggregation state versus weakly dispersion state) color ( i.e , excimer monomer). other an effective matrix platform featured with alky chain length‐dependent temperature‐induced phase constructed assist fabrication desired patterns through temperature‐controlled reversible between crystalline non‐dispersion liquated states. The findings demonstrate that these studied can be potentially applied temperature indicators switchable dynamic interior decoration, which provides new avenue design

Язык: Английский

---

Adjustable Room‐Temperature Phosphorescence through Tunable Aggregation of Dopants in Polymers and its Application in Hydrazine Hydrate Detection

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 30, 2025

Abstract The development of stimulus‐responsive phosphorescent materials has attracted increasing attention owing to their advantages in practical applications. However, those responses toxic and hazardous chemicals remain rare the lack suitable design strategies. Herein, a new approach regulate room‐temperature phosphorescence (RTP) effect doping systems is developed, which two polar phenothiazine derivatives functionalized with trifluoroacetyl groups act as guests polymer matrices different polarities function hosts. Regulated by host, transition from aggregation dispersion can be realized for guest molecules, resulting enhanced RTP. Unlike traditional materials, doped system undergo dynamic state upon exposure hydrazine hydrate vapor, thereby activating phosphorescence. Building on these findings, an effective model established investigate effects transitions between aggregated dispersed states. A novel sensor developed detect hydrates.

Язык: Английский

---

Stimuli-responsive metal-free phosphorescent materials: From design and mechanisms to emerging applications

Coordination Chemistry Reviews, Год журнала: 2025, Номер 538, С. 216734 - 216734

Опубликована: Апрель 21, 2025

Язык: Английский

---