Red- to NIR-Emitting, BODIPY-Based, K<sup>+</sup>-Selective Fluoroionophores and Sensing Materials
作者:Bernhard J. Müller、Sergey M. Borisov、Ingo Klimant
DOI:10.1002/adfm.201603822
日期:2016.11
materials for the selective measurement of potassiumions (K+) in water are presented. The indicator dyes are based on an aza‐crown ether as a receptor and borondipyrromethenes (BODIPY) dyes as fluorophores. Fluorescence enhancement is caused by the reduction of photoinduced electron transfer (PET) upon complexation with K+ ions. The family of newindicators possesses tuneable optical properties (green
介绍了用于选择性测量水中钾离子(K +)的光学传感材料。指示剂染料以氮杂冠醚为受体,而硼二吡咯烷酮(BODIPY)染料为荧光团。与K +离子络合后,光诱导电子转移(PET)的减少导致荧光增强。新的指示器系列具有可调节的光学特性(从绿色到红色激发,从红色到NIR发射)和PET效率。它们表现出高亮度,“接通”状态下的量子产率介于0.20至0.47之间,摩尔吸收系数介于30 000至290 000 m -1 cm -1之间。。新的指示剂染料被固定在生物相容的水凝胶基质,以获得稳定的nonleaching和快速响应(吨90 ≈10个),钾的连续测量感测材料。它们以多种形式实现,例如平面光电二极管,光纤传感器和水分散性聚合物基纳米粒子。除荧光强度测量外,还演示了荧光衰减时间的自参考读数。所有传感器材料都显示出高的K + / Na +选择性,并且不受生理相关范围内的pH值的影响。通过使用光纤传感器定量K
Efficient Far-Red/Near-IR Absorbing BODIPY Photocages by Blocking Unproductive Conical Intersections
作者:Pradeep Shrestha、Komadhie C. Dissanayake、Elizabeth J. Gehrmann、Chamari S. Wijesooriya、Atreyee Mukhopadhyay、Emily A. Smith、Arthur H. Winter
DOI:10.1021/jacs.0c07139
日期:2020.9.9
Photocages are light-sensitive chemical protecting groups that give investigators control over activation of biomolecules using targeted light irradiation. A compelling application of far-red/near-IR absorbing photocages is their potential for deep tissue activation of biomolecules and phototherapeutics. Towards this goal, we recently reported BODIPY photocages that absorb near-IR light. However, these
A Conformationally Restricted Aza-BODIPY Platform for Stimulus-Responsive Probes with Enhanced Photoacoustic Properties
作者:Effie Y. Zhou、Hailey J. Knox、Chang Liu、Weili Zhao、Jefferson Chan
DOI:10.1021/jacs.9b06694
日期:2019.11.6
rational manner. Herein we synthesized and evaluated six modifications to the aza-BODIPYdye platform with respect to their absorbance, fluorescence, and PA properties. We identified a promising conformationallyrestrictedaza-BODIPY (CRaB) scaffold that prioritizes three criteria necessary for the design of stimulus-responsive dyes with optimal ratiometric PA response: absorbance at NIR wavelengths, strong
光声 (PA) 染料吸收近红外 (NIR) 光以产生超声波信号,可以在厘米深度的组织中检测到,其分辨率明显高于使用基于荧光的方法成像的染料。因此,PA 试剂作为研究活体动物疾病模型的研究工具显示出巨大的前景。然而,可激活的 PA 探针的开发受到了适当的 PA 活性分子平台的相对稀缺性的阻碍,这些平台具有可以以合理方式操纵的特性。在此,我们合成并评估了 aza-BODIPY 染料平台在吸光度、荧光和 PA 特性方面的六种修改。我们确定了一种有前途的构象限制 aza-BODIPY (CRaB) 支架,它优先考虑了设计具有最佳比例 PA 响应的刺激响应染料所需的三个标准:NIR 波长处的吸光度、强 PA 强度和与所需刺激相互作用时的大 Δλ . 使用这种支架,我们合成了三种化学上不同的刺激响应 PA 探针,并证明了体外理论比率响应的 2 到 8 倍改进。这表明 PA 参数的改进是可推广的。最后,我们验证了每个
Synthesis of <i>meso</i>
-CF<sub>3</sub>
-Substituted BODIPY Compounds with Redshifted Absorption
作者:Xin-Dong Jiang、Tao Fang、Xin Liu、Dongmei Xi
DOI:10.1002/ejoc.201700800
日期:2017.9.15
The one-pot synthesis of meso-CF3-substituted boron–dipyrromethene compounds (meso-CF3-BODIPYs) is achieved for the first time. The core of 4 is twisted owing to the introduction of the –CF3 group. The –CF3 group produces a remarkable bathochromic shift of the absorption to the near-IR region. The introduction of dimethylamino groups produces a turn-on near-IR fluorescent probe for pH.