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Probe having aggregation-induced emission characteristics and preparation method and application thereof

A technology of aggregation-induced luminescence and aggregation-induced emission, which is applied in the fields of luminescent materials, chemical instruments and methods, organic chemistry, etc., and can solve problems such as difficult to provide quantitative information of analytes

Active Publication Date: 2018-03-13
THE HONG KONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Turn-on sensors are difficult to provide quantitative information about analytes since fluorescence intensity is significantly affected by dye concentration, excitation power level, and other environmental factors

Method used

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  • Probe having aggregation-induced emission characteristics and preparation method and application thereof
  • Probe having aggregation-induced emission characteristics and preparation method and application thereof
  • Probe having aggregation-induced emission characteristics and preparation method and application thereof

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Embodiment Construction

[0146] In one embodiment, figure 1 The chemical formula of p-TPE-RNS is shown; figure 2 The chemical formula of m-TPE-RNS is shown. When the water content is 0%-50%, the PL intensity of p-TPE-RNS is quite low, and it begins to aggregate when the water content is 55%; the strong emission peak centered at 485nm reaches the maximum when the water content is 95%, such as image 3 and Figure 4 shown. When the moisture content is lower than 50%, the PL spectrum of m-TPE-RNS shows a similar weak PL signal; when the moisture content is higher than 55%, the PL spectrum of m-TPE-RNS starts to gather; but the PL intensity at 480nm is between It reaches a maximum value at 60% moisture, and then decreases with increasing moisture, such as Figure 5 and Figure 6 shown. The absolute quantum yields of p-TPE-RNS and m-TPE-RNS were determined to be 4.1% and 15.2% when the water content was 60% using the integrating sphere method. Moisture from 0% to 60%, Hg 2+ The addition of leads t...

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Abstract

The present invention proposes a probe having aggregation-induced emission characteristics and a preparation method and application thereof, the probe comprising: wherein, each R is independently selected from H, alkyl, unsaturated alkyl, heteroalkyl, naphthenic base, heterocyclic alkyl, aryl and heteroaryl; X is a chromophore bonding to an aggregation-induced emission fluorophore. The probe has high sensitivity and high practicability.

Description

technical field [0001] The invention relates to the field of detection materials, in particular to a ratiometric probe with aggregation-induced luminescent properties, a preparation method and application thereof. Background technique [0002] Due to its high sensitivity, non-invasiveness, and good spatiotemporal resolution, photoluminescence (PL) technology has fascinated scientists for decades in numerous fields such as chemical sensing, environmental science, biological imaging, and medical diagnostics. Some frequently used radioluminescent species such as BODIPY, fluorescein, and rhodamine exhibit relatively small Stokes shifts (typically less than 30 nm), which can lead to several practical problems, including the notorious internal filtering effects and the Interference between emitted light. Fluorescence resonance energy transfer (FRET) has been a powerful tool that can provide design strategies not only for the development of fluorochromes with large pseudo-Stokes s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D491/107C07D413/10C09K11/06G01N21/63G01N21/64
CPCC07D413/10C07D491/107C09K11/06C09K2211/1007C09K2211/1029C09K2211/1048C09K2211/1088G01N21/63G01N21/6458G01N21/6486
Inventor 唐本忠陈韵聪张卫杰
Owner THE HONG KONG UNIV OF SCI & TECH