AIE luminogen-functionalised mesoporous nanomaterials for efficient detection of volatile gases

Li, Dongdong; Zhang, Yuping; Fan, Zhiying; Yu, Jihong

doi:10.1039/c5cc05173h

Cited by 43 publications

(24 citation statements)

References 46 publications

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“…Importantly, all the nanoparticles emit high‐efficiency blue and green light in ethanol solutions. Other reactions between the amino group and aldehyde group to form carbon‐nitrogen double bonds were also fabricated to covalent immobilization of AIEgens on silica materials by reacting the aldehyde group with the amino group . In addition, the polyhedral oligomeric silsesquioxane (POSS) with cage‐like structure also has been used as building blocks for the synthesis of AIEgens‐functionalized inorganic‐organic hybrid materials though the Heck coupling reaction, hydrosilylation reaction, and polymerization reaction …”

Section: Fabrication Methodologymentioning

confidence: 99%

“…Volatile acid gases, for example, hydrochloric acid (HCl) gas, are harmful to the human body, so the concentration of acid gases should be strictly controlled in our daily life. In view of the success that AIEgens show great sensing performance for acidic and basic organic vapors, our group prepared AIEgen‐functionalized mesoporous silica nanoparticles with large pores (5.7 nm) and then fabricated them into films by a dip‐coating method ( Figure a) . After the films are exposed to HCl gas with 0.02 v% for 2 s, their fluorescence decreases greatly with red‐shift of about 55 nm, which can be observed obviously by the naked eye (Figure b).…”

Section: Applicationsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

“…Although many AIEgens‐functionalized mesoporous materials have been used to sensing explosives, the detection of explosive vapors are rarely reported. Our group fabricated AIEgen‐functionalized mesoporous films, and tested their detection to explosive vapors . After exposing to DNT vapor (ca.…”

Section: Applicationsmentioning

confidence: 99%

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AIEgens‐Functionalized Inorganic‐Organic Hybrid Materials: Fabrications and Applications

2016

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Inorganic materials functionalized with organic fluorescent molecules combine advantages of them both, showing potential applications in biomedicine, chemosensors, light-emitting, and so on. However, when more traditional organic dyes are doped into the inorganic materials, the emission of resulting hybrid materials may be quenched, which is not conducive to the efficiency and sensitivity of detection. In contrast to the aggregation-caused quenching (ACQ) system, the aggregation-induced emission luminogens (AIEgens) with high solid quantum efficiency, offer new potential for developing highly efficient inorganic-organic hybrid luminescent materials. So far, many AIEgens have been incorporated into inorganic materials through either physical doping caused by aggregation induced emission (AIE) or chemical bonding (e.g., covalent bonding, ionic bonding, and coordination bonding) caused by bonding induced emission (BIE) strategy. The hybrid materials exhibit excellent photoactive properties due to the intramolecular motion of AIEgens is restricted by inorganic matrix. Recent advances in the fabrication of AIEgens-functionalized inorganic-organic hybrid materials and their applications in biomedicine, chemical sensing, and solid-state light emitting are presented.

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Section: Fabrication Methodologymentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

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AIEgens‐Functionalized Inorganic‐Organic Hybrid Materials: Fabrications and Applications

2016

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“…1, 4 The fluorescence sensing and probing based on organic sensory materials has attracted lot of attention due to its desirable features such as non-invasiveness, excellent sensitivity, simplicity, and high signal-to-noise ratio. 7 Moreover, recently, a novel class of luminophores demonstrating aggregation induced emission (AIE) characteristics has drawn great attention because they can overcome the drawback of aggregation-caused quenching (ACQ) of traditional dyes in the solid state. Such luminogens with AIE attribute have been referred to as "AIEgens".…”

Section: Introductionmentioning

confidence: 99%

Vapochromic features of new luminogens based on julolidine-containing styrene copolymers

et al. 2017

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We report on vapochromic films suitable for detecting volatile organic compounds (VOCs), based on new polystyrene copolymers containing julolidine fluorescent molecular rotors (JCAEM). Poly(styrene-co-hydroxyethylmethacrylate) copolymers functionalized with cyanovinyl-julolidine moieties of different compositions were prepared, (P(STY-co-JCAEM)(m) with m = 0.06–0.61). The sensing performance of the spin-coated copolymer films demonstrated significant vapochromism when exposed to VOCs characterized by high vapour pressure and a favourable interaction with the polymer matrix, such as Et2O and CH2Cl2. It is worth mentioning that the fluorescence decrease rate was 7 times faster than that of previously investigated julolidine-based fluorescent molecular rotors dispersed in PS films. This phenomenon was attributed to the better control of the JCAEM moiety distribution in the polymer matrix conferred by the covalent approach, combined with a minimal film thickness of 4 microns. These factors, in concert, strongly accelerate the deactivation pathways of the JCAEM units in the presence of VOCs which interact well. Overall, the present results support the use of julolidine-enriched styrene copolymers as effective chromogenic materials suitable for the fast detection of VOCs.

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Interfacial Assembly of Mesoporous Silica‐Based Optical Heterostructures for Sensing Applications

Gao

Zeng

Liang

et al. 2020

Adv Funct Materials

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Functionalized mesoporous silica materials (MSMs) are extensively investigated in sensing science due to their diverse structural and optical properties including tunable pore size, modifiable surface properties, and excellent accessibility to active sites. In the last few years, great efforts have been devoted to developing modification methods for MSMs for sensing applications with augmented sensitivity, super selectivity, as well as targeting capability, and multimodal capabilities. The functional group, structure, morphology, and component levels in the assembly of heterostructures of MSMs are a key for high sensing performance. As the development of mesoporous silica‐based sensing materials progresses, diverse functional units and materials are rationally implemented into the mesoporous structures. These heterostructures can maintain the excellent structural features of mesoporous silica and the optical properties of the functional units simultaneously, which shows the advantages of photostability, design flexibility, and multifunctionality. Here, an up‐to‐date overview of the fabrication strategies, the properties, and the sensing mechanisms of optical heterostructures based on MSMs is provided. A number of crucial sensing domains, including ionic, molecules, temperature, and biological species are highlighted. Finally, the prospects and potential sensing applications of mesoporous silica‐based optical heterostructures are discussed.

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AIE luminogen-functionalised mesoporous nanomaterials for efficient detection of volatile gases

Cited by 43 publications

References 46 publications

AIEgens‐Functionalized Inorganic‐Organic Hybrid Materials: Fabrications and Applications

AIEgens‐Functionalized Inorganic‐Organic Hybrid Materials: Fabrications and Applications

Vapochromic features of new luminogens based on julolidine-containing styrene copolymers

Interfacial Assembly of Mesoporous Silica‐Based Optical Heterostructures for Sensing Applications

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