This work contributes to the improvement of the azo group which has outstanding electron donating capability and serves as excellent ligands in the field of coordination chemistry. The authors of this research deal wi...This work contributes to the improvement of the azo group which has outstanding electron donating capability and serves as excellent ligands in the field of coordination chemistry. The authors of this research deal with the microwave irradiation synthesis of some new Schiff bases derived from the biologically effective and photoactive Congo red [Ia-g]. The design and preparation of the structurally reversed analogous compounds to the above compounds [IIIa-d] were accomplished using the conventional chemical methods by keeping the benzidine moiety of Congo red as the nucleus of the synthesized compounds, doubling the number of the azo groups and inverting the way of their conjugation order with the azomethine groups. The structures of the newly prepared compounds were established on the basis of their FTIR and H1 NMR spectral data.展开更多
The paper reports a new method of preparing dye image diazonium salt sensitive paper with 3-methoxydiphenylamine-4-diazonium salt and coupling agent. All the indices such as the speed of sensitization, intelligibility...The paper reports a new method of preparing dye image diazonium salt sensitive paper with 3-methoxydiphenylamine-4-diazonium salt and coupling agent. All the indices such as the speed of sensitization, intelligibility, contrast and conservation property of the prepared paper meet the same level of Japanese Ricoh high speed diazo paper SDE. The paper also expounds the exposure, development and image formation principles and methods of diazo sensitive paper and the methods for quality detection.展开更多
文摘This work contributes to the improvement of the azo group which has outstanding electron donating capability and serves as excellent ligands in the field of coordination chemistry. The authors of this research deal with the microwave irradiation synthesis of some new Schiff bases derived from the biologically effective and photoactive Congo red [Ia-g]. The design and preparation of the structurally reversed analogous compounds to the above compounds [IIIa-d] were accomplished using the conventional chemical methods by keeping the benzidine moiety of Congo red as the nucleus of the synthesized compounds, doubling the number of the azo groups and inverting the way of their conjugation order with the azomethine groups. The structures of the newly prepared compounds were established on the basis of their FTIR and H1 NMR spectral data.
文摘The paper reports a new method of preparing dye image diazonium salt sensitive paper with 3-methoxydiphenylamine-4-diazonium salt and coupling agent. All the indices such as the speed of sensitization, intelligibility, contrast and conservation property of the prepared paper meet the same level of Japanese Ricoh high speed diazo paper SDE. The paper also expounds the exposure, development and image formation principles and methods of diazo sensitive paper and the methods for quality detection.
