Multicolor mechanochromism of a phenothiazine derivative through molecular interaction and conformational modulations

Systematic photophysical, thermal and electrochemical analysis of a series of phenothiazine cored conjugated aromatic unit appended D–π–A based high-solid state luminescent materials: their applications in reversible mechanofluorochromic and volatile acid sensing

“…41 The PTcored organic materials are also one of the highly desirable components as MFC materials resulting from their strong electron-donating character due to the ''S'' and ''N'' atoms and an unusual butterfly shape of the middle heterocyclic ring. 42 Phenyl, naphthalene, anthracene, phenanthrene, and pyrene units act as electron acceptors when connected with a highly influential electron donor unit, viz; PT core. In this article, we have designed and synthesized (D-π-A) isomers, namely PT-Cn-(Ar)2 where, n = 2, 12 and Ar = phenyl (Ph), naphthyl (Nap), anthracenyl (An), phenanthryl (Pn), and Pyrenyl (Pr) units by appending the aromatic chromophores with increasing the conjugation from phenyl to pyrene ring with PT moiety via a vinylidene linkage.…”

“…41 The PT-cored organic materials are also one of the highly desirable components as MFC materials resulting from their strong electron-donating character due to the ''S'' and ''N'' atoms and an unusual butterfly shape of the middle heterocyclic ring. 42 Phenyl, naphthalene, anthracene, phenanthrene, and pyrene units act as electron acceptors when connected with a highly influential electron donor unit, viz. the PT core.…”

Recent Advances in Mechanochromism of Metal-Organic Compounds

“…The emission color of mechanochromic materials usually have wide luminous range, covering the entire visible region and even reaching in the near-infrared region (Seki et al, 2017;Zhang et al, 2021;Li et al, 2021). Based on their different phenomenons, mechanochromic materials can be divided into various classes (Figure 1): reversible and irreversible mechanochromism, two-color and multicolor mechanochromism, turn-on and turn-off typed mechanochromism (Yang et al, 2018;Liu et al, 2019;Yang W et al, 2020;Fan et al, 2021;Qian et al, 2021).…”

Quantitative and high-resolution mechanical pressure sensing functions of mechanochromic fluorenylidene-acridane

“…Mechanochromic materials whose characteristics change in response to mechanical stimuli are expected to find applications in pressure sensing, recording, and display devices. Mechanochromism is classified into two types, excited-state mechanochromism showing emission color changes [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] and ground-state mechanochromism exhibiting absorption color changes. Most mechanochromic materials exhibit emission color changes because the excited state energies are sensitive to changes in p-p stacking structures acted on by mechanical stimuli.…”