Near-infrared compound with aggregation-induced emission property as well as preparation method and application thereof

A technology of aggregation-induced luminescence and compounds, applied in chemical instruments and methods, luminescent materials, organic chemistry, etc.

Pending Publication Date: 2021-02-02
THE HONG KONG UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

On the other hand, although three-photon fluorescence and third-harmonic generation have the same excitation light power dependence, third-harmonic generation belongs to the third-order nonlinear optical phenomenon, while three-photon fluorescence belongs to the fifth-order nonlinear optical process

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  • Near-infrared compound with aggregation-induced emission property as well as preparation method and application thereof
  • Near-infrared compound with aggregation-induced emission property as well as preparation method and application thereof
  • Near-infrared compound with aggregation-induced emission property as well as preparation method and application thereof

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Embodiment Construction

[0043] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings. Apparently, the described embodiments are only some, not all, embodiments of the present invention. Based on the implementations described in this specification, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0044] The invention provides a near-infrared aggregation-induced fluorescent material with strong multiphoton absorption, which has the structure shown in the following formula:

[0045]

[0046] Among them, R 1 and R 2 Selected from H, alkyl, alkoxy, aryl or other functional functional groups.

[0047] Preferably, the R 1 and R 2 The specific structure is one of the following structural for...

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Abstract

The invention discloses a near-infrared compound with an aggregation-induced emission property as well as a preparation method and application of the near-infrared compound. The near-infrared compoundhas high-brightness far-infrared and near-infrared fluorescence emission characteristics, has aggregation-induced emission and crystallization-induced emission characteristics in a near-infrared region, and has the characteristic of aggregation-induced nonlinear optical effect. The nanocrystal can be used for biological imaging and can be prepared into nanocrystals for living body deep high-resolution multi-photon fluorescence and third harmonic imaging. The material synthesized by the method shows the properties of aggregation-induced emission and crystallization-induced emission, while thetraditional fluorescent dye has the phenomenon of aggregation-induced fluorescence quenching under the condition of high concentration, so that the defects of the traditional fluorescent dye are effectively overcome.

Description

technical field [0001] The invention relates to the field of biological imaging, in particular to a near-infrared compound with aggregation-induced luminescent properties, a preparation method and biological application thereof. Background technique [0002] Due to its unique ability of deep optical sectioning, high spatial resolution and 3D reconstruction of biological samples, nonlinear optical imaging has become a hot topic in the field of biological imaging research. Previous nonlinear optical imaging research work mainly focused on two-photon fluorescence imaging. In the two-photon excitation fluorescence process, the two-photon fluorescence intensity is proportional to the square of the excitation light power. In contrast, the intensity of three-photon fluorescence and third harmonic generation is proportional to the cube of the excitation light. Therefore, three-photon fluorescence imaging and third harmonic imaging have higher spatial resolution than two-photon flu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D405/06C09K11/06G01N21/64A61K49/00
CPCC07D405/06C09K11/06G01N21/6428A61K49/0021A61K49/0013C09K2211/1029C09K2211/1088
Inventor 唐本忠郑正
Owner THE HONG KONG UNIV OF SCI & TECH
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