the donor, we synthesized a novel mitochondrial-targeted near infrared (NIR) fluorescent probe, MIT-PZR. Due to low cytotoxicity, great photostability and high specificity for mitochondria targeting, MIT-PZR has enormous potential for cell imaging. Furthermore, with a sizeable Stokesshift (emission peak at 705 nm), MIT-PZR penetrated tissues providing stable red fluorescence for imaging in vivo. The
Acceptor Engineering for Optimized ROS Generation Facilitates Reprogramming Macrophages to M1 Phenotype in Photodynamic Immunotherapy
作者:Guang Yang、Jen‐Shyang Ni、Yaxi Li、Menglei Zha、Yao Tu、Kai Li
DOI:10.1002/anie.202013228
日期:2021.3
Reprogramming tumor‐associated macrophages to an antitumor M1phenotype by photodynamic therapy is a promising strategy to overcome the immunosuppression of tumor microenvironment for boosted immunotherapy. However, it remains unclear how the reactive oxygen species (ROS) generated from type I and II mechanisms, relate to the macrophage polarization efficacy. Herein, we design and synthesize three
Utilization of 2-Ylidene-4-thiazolidinones in Synthesis of Heterocyclic Compounds Part (II): Transformation of (4-Oxo-3-phenyl-1,3-thiazolidin-2-ylidene)malononitrile to 3-Aminothiophene Derivatives
Alkyl 3-aminothiophene carboxylates derivatives (3a-d) were prepared via reaction of (4-oxo-3-phenyl-1,3-thiazolidin-2-ylidene)malononitrile (2) with alcohols. Compound 3a was allowed to react with acetic anhydride, chloroacetyl chloride and nitrous acid to afford N,N,N-triacetylthiophene, 3-chloro-acetamidothiophene and 3-diazothiophene derivatives (6, 7 and 8), respectively. Compound 8 was allowed to react with sodium azide to afford the 3-azidothiophene derivative (9). On the other hand, 3-amino-2-carboxamidothiophene derivatives (10a-c) were prepared via reaction of compound 2 with a variety of amines. Compound 10a was allowed to react with acetic anhydride to afford thieno[3,2d]oxazinone (12).
A novel NIR fluorescent probe for the highly sensitive detection of HNO and its application in bioimaging
作者:Shenwei He、Jianming Zhu、Peiyao Xie、Jianfei Liu、Di Zhang、Jun Tang、Yong Ye
DOI:10.1039/d1nj04015d
日期:——
A “naked-eye” HNO probe based on xanthene was obtained.
得到了一种基于苯氧基的“肉眼可见”HNO探针。
New photosensitizers that are based on carbazoles and have thiophene bridges with a low bandgap do 32% better than N719 metal complex dye
作者:Mohamed R. Elmorsy、Safa A. Badawy、Kholoud E. Salem、Ahmed A. Fadda、Ehab Abdel-Latif
DOI:10.1016/j.jphotochem.2022.114421
日期:2023.3
ring engineering into MES4 as a rich electron acceptor enhanced electron injection and inhibited electron recombination in thiazolidine-4-one sensitizers. The MES4 system has the highest light harvesting ability and reflectivity owing to the existence of distinct functional groups that enhanced the capacity to bind the dye with the semiconductor layer (TiO2 device's efficiency). In conclusion, the DSSC