Effective pH sensors based on 1-(anthracen-9-ylmethyl)-1H-benzimidazol-2-amine
摘要:
1-(Anthracen-9-ylmethyl)-1H-benzimidazol-2-amine was synthesized by alkylation of benzimidazol-2-amine with 9-chloromethylanthracene, and a series of azomethines based on it was obtained. Spectral investigations of the 9-anthrylmethylbenzimidazole derivatives revealed their high chemosensor activity with respect to hydrogen cations. Quantum-chemical investigation of the structures obtained showed that they possess high proton affinity and can be regarded as analogs of "proton sponges".
Chemosensors based on N-(2-aminophenyl)-N-(9-anthrylmethyl)amine: II
摘要:
A series of N-(9-anthrylmethyl)arylimines was prepared by condensation of N-(2-aminophenyl)-N-(9-anthrylmethyl)amine with aromatic aldehydes. The study of the luminescent and complexing properties of compounds obtained showed that 2-{[2-(9-anthrylmethylamino)phenylimino]methyl}-1-naphthol and 1-{[2-(9- anthrylmethylamino)phenylimino]methyl}-6-bromo-2-naphthol were efficient highly selective chemosensors of cations Hg(2+).
The synthesis and evaluation of o-phenylenediamine derivatives as fluorescent probes for nitric oxide detection
作者:M. John Plater、Iain Greig、Miep H. Helfrich、Stuart H. Ralston
DOI:10.1039/b105953j
日期:2001.10.11
A series of molecular probes for the determination of nitric oxide (NO) have been prepared. Each probe consists of an anthracene, coumarin or acridine fluorophore coupled to an electron rich o-phenylenediamine group. The o-phenylenediamine group can be substituted with methyl or methoxy groups to enhance its electron rich nature. The fluorophore fluorescence is quenched by photoelectron transfer (PET) from the aromatic amine to the lowest unoccupied orbital of the excited state fluorophore. Reaction with nitrosating species converts the o-phenylenediamine group into an electron deficient benzotriazole derivative. This group has a higher oxidation potential and does not quench the fluorophore fluorescence by photoelectron transfer so that these products are highly fluorescent. Some benzotriazole derivatives were made preparatively by alternative synthetic routes. The formation of fluorescent probes was evaluated by treatment of the precursors with nitrous
fumes and S-nitroso-N-acetylpenicillamine (SNAP).
Chemosensors based on N-(9-anthrylmethyl)-benzene-1,2-diamine
作者:I. E. Tolpygin、V. P. Rybalkin、E. N. Shepelenko、L. L. Popova、Yu. V. Revinskii、A. V. Tsukanov、O. I. Dmitrieva、A. D. Dubonosov、V. A. Bren’、V. I. Minkin
DOI:10.1134/s1070428008040155
日期:2008.4
A number of N-(9-antrylmethyl)-N'-arylmethylidenebenzene-1,2-diamines and 1-(9-anthrylmethyl)-2-aryl-1H-benzimidazoles were synthesized by condensation of N-(9-anthrylmethyl)benzene-1,2-diamine with aromatic and heterocyclic aldehydes. Study on their luminescent properties and complexing ability showed that 2-[2-(9-anthrylmethylamino)phenylimino]methyl}-5-methylphenol, 2-[2-(9-anthryimethylamino)phenylimino]methyl}-4-methoxyphenol, and 2-[2-(9-anthrylmethylamino)phenylimino]methyl}-6-methoxy-4-nitrophenol are effective and highly selective chemosensors for H(+) and Hg(2+) ions.
Chemosensors based on N-(2-aminophenyl)-N-(9-anthrylmethyl)amine: II
作者:I. E. Tolpygin、E. N. Shepelenko、Yu. V. Revinskii、A. V. Tsukanov、A. D. Dubonosov、V. A. Bren’、V. I. Minkin
DOI:10.1134/s1070428009020018
日期:2009.2
A series of N-(9-anthrylmethyl)arylimines was prepared by condensation of N-(2-aminophenyl)-N-(9-anthrylmethyl)amine with aromatic aldehydes. The study of the luminescent and complexing properties of compounds obtained showed that 2-[2-(9-anthrylmethylamino)phenylimino]methyl}-1-naphthol and 1-[2-(9- anthrylmethylamino)phenylimino]methyl}-6-bromo-2-naphthol were efficient highly selective chemosensors of cations Hg(2+).
Effective pH sensors based on 1-(anthracen-9-ylmethyl)-1H-benzimidazol-2-amine
作者:I. E. Tolpygin、Yu. V. Revinskii、A. G. Starikov、A. D. Dubonosov、V. A. Bren、V. I. Minkin
DOI:10.1007/s10593-012-0898-1
日期:2012.1
1-(Anthracen-9-ylmethyl)-1H-benzimidazol-2-amine was synthesized by alkylation of benzimidazol-2-amine with 9-chloromethylanthracene, and a series of azomethines based on it was obtained. Spectral investigations of the 9-anthrylmethylbenzimidazole derivatives revealed their high chemosensor activity with respect to hydrogen cations. Quantum-chemical investigation of the structures obtained showed that they possess high proton affinity and can be regarded as analogs of "proton sponges".