Ining, from left to ideal, increas- water (fw , Figure four. (a) Options of DTITPE (1 10-5 containing, from left to nm; bottom 365 nm). ing SB 218795 Description amounts of water (fw, 00 vol ) below UV irradiation (major: 185 ideal, growing amounts of 00 vol )ing amounts of water (fw,185 nm; bottom 365 nm). (b) Fluorescence emission Chlorpyrifos-oxon Purity & Documentation spectra of DTITPE (1 10-5 M) beneath UV irradiation (leading: 00 (b) Fluorescence emission spectra vol ) under UV10 -5 M) in THF containing increasingnm). of DTITPE (1 irradiation (top: 185 nm; bottom 365 in THF containing increasing amounts of spectra w , vol ). water (f of DTITPE (1 ten -5 M) in THF containing rising (b) Fluorescence emissionFigure 4. (a) Solutions of DTITPE (1 10-5 M) in THF containing, from left to correct, increas-amounts of water (fw, vol ). amounts of water (fw, vol ). three.two.2. 3.two.2. Mechanochromism Mechanochromism 3.2.2. Mechanochromism Mechano-responsive luminescent components containing AIE moieties exhibit tunable Mechano-responsive luminescent materials containing AIE moieties exhibit tunable emissions of the application of an external asAIE ref. [58] which include mechanical stress. Such Mechano-responsiveby an externalmaterials[58] suchstimuli, moietiesstress. Such emissions by the application luminescent stimuli, containing mechanical exhibit tunable supplies are of an to their wide-ranging applications in mechanoemissions by the application of dueexternal stimuli, [58] for example mechanical pressure. Such supplies are of considerable interest considerable interest as a consequence of their wide-ranging applications in mechanosensors, optical storage, safety photonic devices and logic gates and materials are of important interest as a result of their wide-ranging applications in mechano- gates [592]. sensors, optical storage, safety papers, miniature papers, miniature photonic devices[59logic sensors, opticalIn the strong state,papers, miniature mechanochromic UV irradiation storage, security mechanochromic behavior. Beneath behavior. Beneath 62]. In the strong state, DTITPE exhibitsDTITPE exhibits photonic devices and logic gates [59 V irradiation (365 nm) at ambient temperature, DTITPE behavior. Beneath withirradiation maximum at emits blue light, UV an emission (365 62]. In the solid temperature, DTITPE emits blue light, with an emission maximum at nm) at ambient state, DTITPE exhibits mechanochromic 448 nm. Upon grinding, the emission light, with an emission maximum atlight is emitted is red-shifted to 479 nm and green (365 nm) at ambient the emission is red-shifted blue 448 nm. Upon grinding, temperature, DTITPE emits to 479 nm and green light is emitted (Figure five). This process is reversible, and within the presence 448 nm. Upon grinding, the emission within the presence 479 nm and green of dichloromethane vapor the (Figure 5). This procedure is reversible, and is red-shifted to of dichloromethanelight is emitted vapor the (Figure 5). Thisoriginal blue light is restored. original blue light is process is reversible, and within the presence of dichloromethane vapor the restored. original blue light is restored.Figure 5. Fluorescence emission spectra of DTITPE as spectra of DTITPE as synthesized (red(green right after grinding (green Figure five. Fluorescence emission synthesized (red line), following grinding line), emission spectra synthesized with the ground and CH2 2line) Figure 5. FluorescenceCH2after exposure ofline). Cl vapor (blue line). Inset: photographs ofCl(green and just after exposure to and Cl2 vapor (blue DTITPE asphotographs (red line), following grinding.