Fluorescent supramolecular self-assembly gels and their application as sensors: A review

Cao, Xinhua; Gao, Aiping; Hou, Ji‐Ting; Yi, Tao

doi:10.1016/j.ccr.2021.213792

Cited by 119 publications

(72 citation statements)

References 187 publications

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“…When TFA was gradually added to the methanol solution of MOX2 , the yellow solution by degrees converted into a light blue one ( Figure 8A inset). Upon addition of TFA, the color of MOX2 in methanol solvent changed from orange to blue under 365 nm illumination, and a new blue-shifted peak formed in the PL spectrum ( Figure 8A ) ( Cao et al, 2019 ; Cao et al, 2021 ). With the concentration of TFA increased from 0 to 21.32 mM, pronounced changes in emission suggested that MOX2 had been protonated by TFA.…”

Section: Resultsmentioning

confidence: 99%

Precise Molecular Design of a Pair of New Regioisomerized Fluorophores With Opposite Fluorescent Properties

Wang

Chen

et al. 2022

Front. Chem.

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Aggregation-induced emission (AIE) has attracted much attention in the past 2 decades. To develop novel AIE-active materials, ACQ-to-AIE transformation via regioisomerization is one of the most straightforward method. However, most of the reported ACQ-to-AIE transformations are achieved by migrating bulky units. In this work, a facile conversion was realized by migrating a small pyrrolidinyl group from para- to ortho-position on the rofecoxib scaffold. As a result, a pair of new isomers named MOX2 and MOX4 exhibited AIE behavior and ACQ activity, respectively. Moreover, MOX2 also showed solvatochromic, mechanochromic, and acidochromic properties with reversible multi-stimulus behavior. Single crystal X-ray analysis of MOX2 revealed that the molecular conformation and its packing mode were responsible for the AIE emission behavior. Further investigation indicated that MOX2 showed high lipid droplets staining selectivity. Taken together, the current work not only provides a new design philosophy for achieving ACQ-to-AIE conversion by migrating a small pyrrolidinyl group but also presents a promising candidate MOX2 for potential applications such as in security ink, optical recording and biological applications.

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Section: Resultsmentioning

confidence: 99%

Precise Molecular Design of a Pair of New Regioisomerized Fluorophores With Opposite Fluorescent Properties

Wang

Chen

et al. 2022

Front. Chem.

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“…Supramolecular gels formed by the self-assembly of low molecular weight organogelators are gaining vast attention in multiple research areas ranging from bionanomaterials and drug delivery systems to electronic devices, light-emitting materials and templates for the assembly of nanostructures. [1][2][3] Organized structures formed through noncovalent interactions between the molecules render these materials with intriguing properties. 4,5 The information hoarded in the individual components can be transferred/enhanced in the assembled structures.…”

Section: Introductionmentioning

confidence: 99%

Mandelic acid appended chiral gels as efficient templates for multicolour circularly polarized luminescence

et al. 2022

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“…Comparing with other detection methods, the fluorescence‐based methods are fast, sensitive, cheap, and capable of spatial and temporal resolution [14–18] . In recent years, many materials are employed for preparing fluorescent probes, such as organic dyes, [19] metal complex, [20] polyoxometalates, [21] nanoparticle, [22] MOF, [23] COF, [24] metal cluster, [25] supramolecular gel, [26] and so on. For organic dyes, many dyes were used to construct into fluorescent sensors, such as coumarins, [27] Phthalocyanine, [28] pyrene, [29] fluorescein, [30] BODIPY, [31] naphthalimide, [32] nitrobenzoxadiazole, [33] cyanine [34,35] .…”

Section: Introductionmentioning

confidence: 99%

Novel Naphthalimide‐Based Self‐Assembly Systems with Different Terminal Groups for Sensitive Detection of Thionyl Chloride and Oxalyl Chloride in Two Modes

Qin

Wang

et al. 2022

ChemistrySelect

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Two novel naphthalimide derivatives‐based chemosensors with the terminal groups of ethanediamine and 1,3‐diaminopropane (1 and 2) were designed and synthesized. Two compounds exhibited obvious solvatochromism properties. They could respond to some kinds of acyl chlorides through reaction with the ethylenediamine group and propylene diamine group at 4‐site. It was found that they had different response performance due to their different terminal groups. Compound 1 could sensitively detect thionyl chloride (SOCl2) and oxalyl chloride ((COCl)2) with the low limit detection (LOD) of 29.54 nΜ and 151.6 pM in the solution state, respectively. Moreover, film 1 could also respond to the abovementioned acyl chloride gases with LOD of 35.5 and 91.98 ppb, respectively. It was different that compound 2 could selectively detect (COCl)2 with a low LOD of 243.4 pM and 35 ppb for its solution and film state, respectively. NMR and HRMS experiments well demonstrated that the different detection mechanism occurred on two sensors. From this work, it was concluded that the little difference between the terminal reaction sites of naphthalimide greatly affected the detection performance, which would open a window for design functional self‐assembly sensors for acyl chlorides based on naphthalimide derivatives.

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Fluorescent supramolecular self-assembly gels and their application as sensors: A review

Cited by 119 publications

References 187 publications

Precise Molecular Design of a Pair of New Regioisomerized Fluorophores With Opposite Fluorescent Properties

Precise Molecular Design of a Pair of New Regioisomerized Fluorophores With Opposite Fluorescent Properties

Mandelic acid appended chiral gels as efficient templates for multicolour circularly polarized luminescence

Novel Naphthalimide‐Based Self‐Assembly Systems with Different Terminal Groups for Sensitive Detection of Thionyl Chloride and Oxalyl Chloride in Two Modes

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