Nanoconfinement of tetraphenylethylene in zeolitic metal-organic framework for turn-on mechanofluorochromic stress sensing

Zhang, Yang; Xiong, Tao; Möslein, Annika F.; Mollick, Samraj; Kachwal, Vishal; Babal, Arun Singh; Amin, Nader; Tan, Jin‐Chong

doi:10.1016/j.apmt.2022.101434

Cited by 15 publications

(23 citation statements)

References 46 publications

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“… 41 The MC luminescence characteristic has garnered much attention because of its potential uses in mechanosensory applications, security papers, and optical storage. 42 The mechanochromic aspects of probe 1 in its solid state were investigated due to the aggregation-induced emission (AIE) nature of TPE-PVA. A mortar and pestle were used to grind probe 1 (TPE-PVA) to determine its mechanochromic luminescence response.…”

Section: Resultsmentioning

confidence: 99%

Tetraphenylethene-Based Fluorescent Chemosensor with Mechanochromic and Aggregation-Induced Emission (AIE) Properties for the Selective and Sensitive Detection of Hg²⁺ and Ag⁺ Ions in Aqueous Media: Application to Environmental Analysis

et al. 2022

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It is critical to design a novel and simple bifunctional sensor for the selective and sensitive detection of ions in an aqueous media in environmental samples. As a result, in this study, tetraphenylethene hydrazinecarbothioamide (TPE-PVA), known as probe 1, was successfully synthesized and characterized as having impressive photophysical phenomena such as aggregation-induced emission (AIE) and mechanochromic properties by applying mechanical force to the solid of probe 1. The emission of the solid of probe 1 changed from turquoise blue to lemon yellow after grinding, from lemon yellow to parakeet green after annealing at 160 °C, and to arctic blue after fuming with DCM. Such characteristics could lead to a variety of applications in several fields. The probe was implemented and demonstrated remarkable selectivity and sensitivity toward mercury(II) and silver(I) ions by substantially switching off emission over other cations. Following an extensive photophysical analysis, it was discovered that detection limits (LOD) as low as 0.18344 and 0.2384 μg mL –1 for Hg 2+ and Ag + , respectively, are possible with a quantum yield (Φ) of 2.26. Probe 1 was also explored as a Hg 2+ and Ag + paper strip-based sensor and kit for practical use. The binding mechanisms of probe 1 (TPE-PVA) with Hg 2+ and Ag + were confirmed by 1 H NMR titration. These results could lead to the development of reliable onsite Hg 2+ and Ag + fluorescent probes in the future.

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Section: Resultsmentioning

confidence: 99%

Tetraphenylethene-Based Fluorescent Chemosensor with Mechanochromic and Aggregation-Induced Emission (AIE) Properties for the Selective and Sensitive Detection of Hg²⁺ and Ag⁺ Ions in Aqueous Media: Application to Environmental Analysis

et al. 2022

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“…The fluorescence performance of perylene@MIL-68(In) subject to different compressive pressures also supports our theory. According to the previous studies, 26,38,39 it can be deduced that when the pressure increases, the π−π interaction between the linker (BDC) and perylene will increase, thus causing perylene to become more tightly constrained. The excitation and emission spectra of perylene@MIL-68(In) under pressure (Figure 3e,f) illustrate that when the interaction is enlarged, the peak intensity corresponding to the perylene excimer increases.…”

Section: T H Imentioning

confidence: 97%

“…As the electron-donating ability of BTX becomes stronger (i.e., benzene < toluene < xylene), the π–π interaction bridge will become stronger correspondingly, resulting in a more substantial confinement effect for perylene in the channel. 39 In addition, xylene was then selected to test the sensitivity, selectivity, and reversibility of the system (see Figure S6 , including the limit of detection value). It is worth mentioning that the Y-emission can only be observed at temperatures below 50 K for pure perylene.…”

Section: Btx Sensing Performance Of Perylene@mil-68(in)mentioning

confidence: 99%

“…Furthermore, based on this, the occurrence of a higher peak intensity and more pronounced peak splitting upon contact with xylene (compared to that with benzene and toluene) can also be understood. As the electron-donating ability of BTX becomes stronger (i.e., benzene < toluene < xylene), the π–π interaction bridge will become stronger correspondingly, resulting in a more substantial confinement effect for perylene in the channel . In addition, xylene was then selected to test the sensitivity, selectivity, and reversibility of the system (see Figure S6, including the limit of detection value).…”

Section: Synthesis and Structure Of The Perylene@mil-68(in) Composit...mentioning

confidence: 99%

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Turn-On Fluorescence Chemical Sensing through Transformation of Self-Trapped Exciton States at Room Temperature

et al. 2022

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Most of the current fluorescence sensing materials belong to the turn-off type, which make it hard to detect toxic substances such as benzene, toluene, and xylene (BTX) due to the lack of active chemical sites, thereby limiting their development and practical use. Herein, we show a guest–host mechanism stemming from the confined emitter’s self-trapped exciton (STE) states or electron–phonon coupling to achieve turn-on fluorescence. We designed a luminescent guest@metal–organic framework (LG@MOF) composite material, termed perylene@MIL-68(In), and established its E-type excimeric emission properties in the solid state. Upon exposure to BTX, especially xylene, we show that the E-excimer readily converts into the Y-excimer due to nanoconfinement of the MOF structure. Such a transformation elevates the fluorescence intensity, thus realizing a turn-on type fluorescent sensor for detecting BTX solvents. Our results further demonstrate that controlling the STE states of perylene at room temperature (vs the previous report of <50 K) is possible via nanoscale confinement, paving the way to enabling turn-on type luminescent sensors for engineering practical applications.

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Section: Potential Applications and Devices Integrating Lg@mofsmentioning

confidence: 99%

Confinement of Luminescent Guests in Metal–Organic Frameworks: Understanding Pathways from Synthesis and Multimodal Characterization to Potential Applications of LG@MOF Systems

2022

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This review gives an authoritative, critical, and accessible overview of an emergent class of fluorescent materials termed "LG@MOF", engineered from the nanoscale confinement of luminescent guests (LG) in a metal−organic framework (MOF) host, realizing a myriad of unconventional materials with fascinating photophysical and photochemical properties. We begin by summarizing the synthetic methodologies and design guidelines for representative LG@MOF systems, where the major types of fluorescent guest encompass organic dyes, metal ions, metal complexes, metal nanoclusters, quantum dots, and hybrid perovskites. Subsequently, we discuss the methods for characterizing the resultant guest−host structures, guest loading, photophysical properties, and review local-scale techniques recently employed to elucidate guest positions. A special emphasis is paid to the pros and cons of the various methods in the context of LG@MOF. In the following section, we provide a brief tutorial on the basic guest−host phenomena, focusing on the excited state events and nanoscale confinement effects underpinning the exceptional behavior of LG@MOF systems. The review finally culminates in the most striking applications of LG@MOF materials, particularly the "turn-on" type fluorochromic chemo-and mechano-sensors, noninvasive thermometry and optical pH sensors, electroluminescence, and innovative security devices. This review offers a comprehensive coverage of general interest to the multidisciplinary materials community to stimulate frontier research in the vibrant sector of light-emitting MOF composite systems.

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Nanoconfinement of tetraphenylethylene in zeolitic metal-organic framework for turn-on mechanofluorochromic stress sensing

Cited by 15 publications

References 46 publications

Tetraphenylethene-Based Fluorescent Chemosensor with Mechanochromic and Aggregation-Induced Emission (AIE) Properties for the Selective and Sensitive Detection of Hg²⁺ and Ag⁺ Ions in Aqueous Media: Application to Environmental Analysis

Tetraphenylethene-Based Fluorescent Chemosensor with Mechanochromic and Aggregation-Induced Emission (AIE) Properties for the Selective and Sensitive Detection of Hg²⁺ and Ag⁺ Ions in Aqueous Media: Application to Environmental Analysis

Turn-On Fluorescence Chemical Sensing through Transformation of Self-Trapped Exciton States at Room Temperature

Confinement of Luminescent Guests in Metal–Organic Frameworks: Understanding Pathways from Synthesis and Multimodal Characterization to Potential Applications of LG@MOF Systems

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Nanoconfinement of tetraphenylethylene in zeolitic metal-organic framework for turn-on mechanofluorochromic stress sensing

Cited by 15 publications

References 46 publications

Tetraphenylethene-Based Fluorescent Chemosensor with Mechanochromic and Aggregation-Induced Emission (AIE) Properties for the Selective and Sensitive Detection of Hg2+ and Ag+ Ions in Aqueous Media: Application to Environmental Analysis

Tetraphenylethene-Based Fluorescent Chemosensor with Mechanochromic and Aggregation-Induced Emission (AIE) Properties for the Selective and Sensitive Detection of Hg2+ and Ag+ Ions in Aqueous Media: Application to Environmental Analysis

Turn-On Fluorescence Chemical Sensing through Transformation of Self-Trapped Exciton States at Room Temperature

Confinement of Luminescent Guests in Metal–Organic Frameworks: Understanding Pathways from Synthesis and Multimodal Characterization to Potential Applications of LG@MOF Systems

Contact Info

Product

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Tetraphenylethene-Based Fluorescent Chemosensor with Mechanochromic and Aggregation-Induced Emission (AIE) Properties for the Selective and Sensitive Detection of Hg²⁺ and Ag⁺ Ions in Aqueous Media: Application to Environmental Analysis

Tetraphenylethene-Based Fluorescent Chemosensor with Mechanochromic and Aggregation-Induced Emission (AIE) Properties for the Selective and Sensitive Detection of Hg²⁺ and Ag⁺ Ions in Aqueous Media: Application to Environmental Analysis