Rubbing induced reversible fluorescence switching in thiophene-based organic semiconductor films by mechanical amorphisation

Cavallini, Massimiliano; Manet, Ilse; Brucale, Marco; Favaretto, Laura; Melucci, Manuela; Maini, Lucia; Liscio, Fabiola; Ciana, Michele Della; Gentili, Denis

doi:10.1039/d1tc01036k

Cited by 6 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…No confinement effect was observed when using a stamp with pixel sizes above 100 × 100 µm 2 . In this case, the polymorph size and distribution are almost identical to those of thin deposits prepared by drop-casting ( Figure 4 c); each printed structure contains both of the polymorphic forms with the same percentages observed in the drop-cast film [ 20 ].…”

Section: Resultsmentioning

confidence: 77%

“…Usually, technological applications require the use of a specific polymorph [ 14 ]. In this respect, in recent years, an impressive effort has been devoted to driving polymorph formation/selection toward controlled, specific structures by acting on material processing [ 15 , 16 ], patterning [ 17 ], and postdeposition procedures, such as thermal and vapor solvent treatments [ 18 , 19 ] or mechanical processing [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Polymorph Separation by Ordered Patterning

et al. 2022

Self Cite

View full text Add to dashboard Cite

We herein address the problem of polymorph selection by introducing a general and straightforward concept based on their ordering. We demonstrated the concept by the ordered patterning of four compounds capable of forming different polymorphs when deposited on technologically relevant surfaces. Our approach exploits the fact that, when the growth of a crystalline material is confined within sufficiently small cavities, only one of the possible polymorphs is generated. We verify our method by utilizing several model compounds to fabricate micrometric “logic patterns” in which each of the printed pixels is easily identifiable as comprising only one polymorph and can be individually accessed for further operations.

show abstract

Section: Resultsmentioning

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Polymorph Separation by Ordered Patterning

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

Photo/Mechanical/Acidic Multi‐Stimuli Responses and Information Encryption Design of Acylhydrazone Derivative

Ye,

Wang,

Zhang

et al. 2024

Chemistry A European J

View full text Add to dashboard Cite

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 acid chromic property. The combination of photochromism and acid chromism explores the possible applications of acylhydrazone derivatives in information encryption.

show abstract

Twisted phenothiazine-terminated bisarylic methanone π-architecture exhibiting high-contrast mechanofluorochromism

Song

et al. 2022

Dyes and Pigments

View full text Add to dashboard Cite

Rubbing induced reversible fluorescence switching in thiophene-based organic semiconductor films by mechanical amorphisation

Abstract: Here, we applied rubbing on thiophene derivate organic semiconductor thin films to induce a reversible mechanical amorphisation. Amorphisation is associated with fluorescence switching, which is regulated by the polymorphic nature...

Cited by 6 publications

References 30 publications

Polymorph Separation by Ordered Patterning

Polymorph Separation by Ordered Patterning

Photo/Mechanical/Acidic Multi‐Stimuli Responses and Information Encryption Design of Acylhydrazone Derivative

Twisted phenothiazine-terminated bisarylic methanone π-architecture exhibiting high-contrast mechanofluorochromism

Contact Info

Product

Resources

About