SWITCHING FLUORESCENT NANOPARTICLE PROBE AND FLUORESCENT PARTICLE IMAGING METHOD USING SAME
申请人:Hara Isao
公开号:US20130149252A1
公开(公告)日:2013-06-13
The present invention provides a novel fluorescent nanoparticle imaging probe having a switching function (a function to quench a fluorescent dye during nanoparticle preparation, and emit fluorescence during imaging). A switching fluorescent nanoparticle probe comprising: a molecular assembly composed of an amphiphilic block polymer having a hydrophilic block chain and a hydrophobic block chain; and a fluorescent dye encapsulated in the molecular assembly, wherein (a) the hydrophilic block chain comprises, as an essential hydrophilic structural unit, a unit selected from a sarcosine unit and an alkylene oxide unit, (b) the hydrophobic block chain comprises, as an essential hydrophobic structural unit, a unit selected from the group consisting of an amino acid unit and a hydroxylic acid unit, and (c) the fluorescent dye is a cyanine compound represented by the formula (I):
and two or more molecules of the fluorescent dye are encapsulated in the single molecular assembly.
Switching fluorescent nanoparticle probe and fluorescent particle imaging method using same
申请人:Hara Isao
公开号:US09370589B2
公开(公告)日:2016-06-21
The present invention provides a novel fluorescent nanoparticle imaging probe having a switching function (a function to quench a fluorescent dye during nanoparticle preparation, and emit fluorescence during imaging). A switching fluorescent nanoparticle probe comprising: a molecular assembly composed of an amphiphilic block polymer having a hydrophilic block chain and a hydrophobic block chain; and a fluorescent dye encapsulated in the molecular assembly, wherein (a) the hydrophilic block chain comprises, as an essential hydrophilic structural unit, a unit selected from a sarcosine unit and an alkylene oxide unit, (b) the hydrophobic block chain comprises, as an essential hydrophobic structural unit, a unit selected from the group consisting of an amino acid unit and a hydroxylic acid unit, and (c) the fluorescent dye is a cyanine compound represented by the formula (I):
and two or more molecules of the fluorescent dye are encapsulated in the single molecular assembly.
[EN] Fluorescent Probes for Singlet Oxygen Generation and Cancer Ablation<br/>[FR] SONDES FLUORESCENTES POUR LA GÉNÉRATION D'OXYGÈNE SINGULET ET L'ABLATION DE CANCER
申请人:UNIV HONG KONG SCI & TECH
公开号:WO2020164448A1
公开(公告)日:2020-08-20
A fluorescent probe can include a compound exhibiting near infrared (NIR) aggregation-induced emission (AIE). The probe can be used for the selective imaging and killing of cancer cells. The probe can specifically stain mitochondria and selectively target cancer cells over normal cells. The probe exhibits strong near-infrared (NIR) two-photon absorption (2PA), bright NIR emission and efficient singlet oxygen ( 1O 2) generation. The probe can be used both in cancer cell-selective ablation and in in vivo melanoma therapy using image-guided PDT.
respectively. Under the excitation of near-infrared light, their fluorescence emission is about 650 nm. The compounds can stain nucleic acid DNA with the same level of nuclear localization as Hoechst 33342. Under continuous irradiation with a near-infrared laser, the three new compounds showed less fluorescence decay than DAPI, and the average fluorescence decay rates were 0.016%/s, 0.020%/s, and 0.023%/s. They
Synthesis and optical properties of NLO chromophores containing an indoline donor and azo linker
作者:Mohamed Ashraf、Ayele Teshome、Andrew J. Kay、Graeme J. Gainsford、M. Delower H. Bhuiyan、Inge Asselberghs、Koen Clays
DOI:10.1016/j.dyepig.2012.04.022
日期:2012.12
A suite of new nonlinear optical chromophores containing an indoline donor and azo linker has been Synthesized in high yields. The methodology used allows for the incorporation of various acceptor systems, the ready isolation of the target compounds and access to materials with excellent thermal stabilities (viz = T-d 220-270 degrees C), The first hyperpolarizabilities of the compounds were measured by hyper-Raleigh scattering and all were found to have an excellent response. The highest value measured was 1640 x 10(-30) esu in DMF at 800 nm for a chromophore containing the well-known TCF acceptor system. Based on data obtained in this and other studies, there is evidence that chromophores containing indoline donors are capable of providing compounds with molecular NLO responses higher than those containing donors derived from N,N-disubstituted anilines. (c) 2012 Elsevier Ltd. All rights reserved.