Design of AIE‐active Schiff‐bases: Mechanochromic, Thermochromic and Sensing Studies DOI

Mahraj Din Malla,

Asif A. Malik,

Aadil A. Ahangar

и другие.

ChemistrySelect, Год журнала: 2024, Номер 9(44)

Опубликована: Ноя. 1, 2024

Abstract There is a notable shift toward organic functional materials for their advantages in terms of availability, processability and biodegradability. Solid‐state emitters, though rare, are fascinating with diverse range applications. In this work we utilize crystal engineering principles to design Schiff bases 1 2 , realize solid state emission its tuning. The products have been characterized studied through crystallographic, Hirshfeld, optical studies. Structural studies validate crystallization molecule methanol water, respectively, packing predominantly aided by solvent assisted hydrogen bonding, while the π‐π stacking interactions absent. Crystalline solids emissive: ( λ max 474 nm, τ 0.35 ± 0.04 ns) (481 1.80 0.07 aggregation induced (AIE) active. Mechano thermo‐fluorochromic responses attributed phase changes triggered grinding desolvation, respectively. nonemissive solutions detect presence Pb(II) /Hg(II) turn‐on, limit detection (LOD) values 0.0017–0.0022 ppb, picric acid sensing reported AIE luminogen (AIEgen) forms LOD 0.0017 ppb 0.0034

Язык: Английский

Combined Experimental and Theoretical Investigations of a Photoswitching Dimorphic Chlorinated Schiff Base DOI
Aijaz A. Dar,

Aadil A. Ahangar,

Cherumannil Femina

и другие.

The Journal of Physical Chemistry C, Год журнала: 2024, Номер 128(44), С. 18901 - 18912

Опубликована: Окт. 29, 2024

Polymorphism in organic compounds is a fascinating phenomenon with diverse applications. Rational development of polymorphic forms challenging and demands more investigations. Subtle variations functional groups can lead to variation intra- as well intermolecular interactions promote polymorphism. We report chlorinated sulfonated Anil 1 its crystallization two forms, 1a 1b, which are conformational polymorphs. Structural studies reveal polymorphism arises due rotation about the C═N–C═C bond subsequent prototropism, planar form exists keto while twisted 1b an enol tautomer. Color attributed difference extent molecular conjugation, emission switching packing. Density theory (DFT) have been carried out understand packing explain optical properties. To further effect nature halogen atoms on electronic properties, bromo iodo derivatives reported studied. Aggregation-induced (AIE) sensitivity acids, nitroaromatics like picric acid, heavy metal ions Hg(II) for

Язык: Английский

Процитировано

1
Design of AIE‐active Schiff‐bases: Mechanochromic, Thermochromic and Sensing Studies DOI

Mahraj Din Malla,

Asif A. Malik,

Aadil A. Ahangar

и другие.

ChemistrySelect, Год журнала: 2024, Номер 9(44)

Опубликована: Ноя. 1, 2024

Abstract There is a notable shift toward organic functional materials for their advantages in terms of availability, processability and biodegradability. Solid‐state emitters, though rare, are fascinating with diverse range applications. In this work we utilize crystal engineering principles to design Schiff bases 1 2 , realize solid state emission its tuning. The products have been characterized studied through crystallographic, Hirshfeld, optical studies. Structural studies validate crystallization molecule methanol water, respectively, packing predominantly aided by solvent assisted hydrogen bonding, while the π‐π stacking interactions absent. Crystalline solids emissive: ( λ max 474 nm, τ 0.35 ± 0.04 ns) (481 1.80 0.07 aggregation induced (AIE) active. Mechano thermo‐fluorochromic responses attributed phase changes triggered grinding desolvation, respectively. nonemissive solutions detect presence Pb(II) /Hg(II) turn‐on, limit detection (LOD) values 0.0017–0.0022 ppb, picric acid sensing reported AIE luminogen (AIEgen) forms LOD 0.0017 ppb 0.0034

Язык: Английский

Процитировано

0