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Updated: Jun 7, 2025

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
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Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera

Published on: December 27, 2018

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侧链异质化诱导的空间结合,以实现高效的近红外II光热敏剂

Chunbin Li1, Mengfan Yao1, Guoyu Jiang1

  • 1College of Chemistry and Chemical Engineering, College of Biomedical Sciences, Inner Mongolia Key Laboratory of Synthesis and Application of Organic Functional Molecules, Inner Mongolia University, Hohhot, 010021, P. R. China.

Angewandte Chemie (International ed. in English)
|November 9, 2024
PubMed
概括

这项研究引入了一种新的策略,使用分子异构化来增强有机聚合物的近红外II (NIR-II) 辐射和光热特性. 这一进步改善了用于先进的生物医学成像和治疗的光疗剂 (PTA).

关键词:
接近红外 II 接近红外 II有机聚合物 有机聚合物摄影热剂是一种摄影热剂.空间连接的空间连接瘤治疗的治疗方法

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The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
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Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
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All ortho–para directors, excluding halogens, are activating groups. These groups donate electrons to the ring, making the ring carbons electron-rich. Consequently, the reactivity of the aromatic ring towards electrophilic substitution increases. For instance, the nitration of anisole is about 10,000 times faster than the nitration of benzene. The electron-donating effect of the methoxy group in anisole activates the ortho and para positions on the ring and stabilizes the corresponding...
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