Efficient Synthesis of a Wide-Range Absorbing Azaphthalocyanine Dark Quencher and Its Application to Dual-Labeled Oligonucleotide Probes for Quantitative Real-Time Polymerase Chain Reactions
fluorescence in DNA hybridization probes. The panchromatic light absorption of AzaPc from 300 nm up to at least 700 nm and its lack of fluorescence make it an ideal candidate for a universal dark quencher. To prove this experimentally, oligodeoxyribonucleotide probes were labeled at the 3′‐end by this AzaPc and at the 5′‐end by a fluorophore used in the polymerase chain reaction (PCR)—that is, fluorescein
不对称的二烷基氨基取代的锌酞菁锌(AzaPc)对DNA杂交探针中的暗暗荧光猝灭剂具有独特的光谱和光物理性质。从300 nm到至少700 nm的AzaPc的全色光吸收及其荧光不足,使其成为通用深色淬灭剂的理想选择。为了通过实验证明这一点,该AzaPc在3'末端标记了寡脱氧核糖核苷酸探针,在聚合酶链反应(PCR)中使用的荧光团(即荧光素,CAL Fluor Red 610和Cy5)标记了5'末端。 。在开发的TaqMan PCR分析模型中,与市售的深色淬灭剂(BHQ-1,BHQ-2,BBQ-650)相比,AzaPc的淬灭效率明显更高。事实证明,AzaPc标记的探针还可用于定量PCR的SLCO2B1转运蛋白基因表达的实用PCR分析中。所构建的校准曲线表明线性范围为102至10 7个目标副本。
Ultrafast intramolecular charge transfer in tetrapyrazinoporphyrazines controls the quantum yields of fluorescence and singlet oxygen
efficiency decreased in non-polar solvents. The presence of two N,N-diethylamino substituents in 7Zn (n = 2, m = 6) considerably quenched the S1 states in pyridine (polar, coordinating), toluene (non-polar, non-coordinating) and toluene–1% pyridine (v/v) (non-polar, coordinating). The photophysical properties of compounds with more donor substituents on the periphery (n > 2, m < 6) were similar to those of
Self‐Assembled Azaphthalocyanine Dimers with Higher Fluorescence and Singlet Oxygen Quantum Yields than the Corresponding Monomers
作者:Veronika Novakova、Petr Zimcik、Kamil Kopecky、Miroslav Miletin、Jiří Kuneš、Kamil Lang
DOI:10.1002/ejoc.200800317
日期:2008.7
The dimers are formed by the coordination of the free electron pair of one diethylamino group with the central metal of the adjacent molecule. The addition of pyridine leads to monomerization and considerable quenching of fluorescence and singletoxygen formation as a result of intramolecular photoinduced singlet electron transfer (PET). PET is efficiently inhibited in dimers; therefore, dimers have
New unsymmetrical zinc azaphthalocyanine (AzaPc) was synthesized using statistical condensation of two precursors. Postsynthetic modifications led to incorporation of azide group that efficiently underwent Cu(I)-catalyzed azide/alkyne 1,3-dipolar cycloaddition with terminal alkyne on a solid phase. The modified solid phase was then used for synthesis of oligodeoxyribonucletides labeled with AzaPc. DNA hybridization assays confirmed high quenching efficiency (QE>96%) of zinc AzaPc quencher with six different fluorophores ranging in emission maxima from 517 nm to 701 nm (FAM, HEX, Cy3, Cy3.5, Cy5, and Cy5.5). (C) 2011 Elsevier Ltd. All rights reserved.
Ried, Walter; Tsiotis, Georgios, Liebigs Annalen der Chemie, 1988, p. 1197 - 1200