西北师范大学化学化工学院、高原交汇区水资源安全与水环境保护教育部重点实验室卢小泉教授、祝振童副教授在分子工程调控发光研究方面取得重要进展.相关研究成果以“Precise modulation of intramolecular aggregation induced electro...西北师范大学化学化工学院、高原交汇区水资源安全与水环境保护教育部重点实验室卢小泉教授、祝振童副教授在分子工程调控发光研究方面取得重要进展.相关研究成果以“Precise modulation of intramolecular aggregation induced electrochemiluminescence by tetraphenylethylene-based supramolecular architectures”为题发表在化学领域国际顶级期刊Angew Chem Int Ed(《德国应用化学》)上,并被选为VIP论文(Very Important Paper).展开更多
Sr2CeO4 phosphor was synthesized by mechanical milling and reactive sintering in this work. The solid state reaction of SrCO3 and CeO2 (2∶1) started at about 850 ℃ and completed at 1 000 ℃ for about 4 h. Two types ...Sr2CeO4 phosphor was synthesized by mechanical milling and reactive sintering in this work. The solid state reaction of SrCO3 and CeO2 (2∶1) started at about 850 ℃ and completed at 1 000 ℃ for about 4 h. Two types of formation mechanism of Sr2CeO4 were proposed. When the starting powder mixture was fired above 1 000 ℃, the unstable intermediate phase SrCeO3 was developed, which then reacted with SrCO3 to form the final product Sr2CeO4, however, SrCO3 and CeO2 converted directly to Sr2CeO4 at a lower temperature. The XRD results showed the crystal structure of Sr2CeO4 was orthorhombic. The emission spectra displayed a broad band with maximum at about 465 nm. The mechanical milling of starting power mixture and the sintering temperature had no effect on this emission spectra.展开更多
文摘西北师范大学化学化工学院、高原交汇区水资源安全与水环境保护教育部重点实验室卢小泉教授、祝振童副教授在分子工程调控发光研究方面取得重要进展.相关研究成果以“Precise modulation of intramolecular aggregation induced electrochemiluminescence by tetraphenylethylene-based supramolecular architectures”为题发表在化学领域国际顶级期刊Angew Chem Int Ed(《德国应用化学》)上,并被选为VIP论文(Very Important Paper).
文摘Sr2CeO4 phosphor was synthesized by mechanical milling and reactive sintering in this work. The solid state reaction of SrCO3 and CeO2 (2∶1) started at about 850 ℃ and completed at 1 000 ℃ for about 4 h. Two types of formation mechanism of Sr2CeO4 were proposed. When the starting powder mixture was fired above 1 000 ℃, the unstable intermediate phase SrCeO3 was developed, which then reacted with SrCO3 to form the final product Sr2CeO4, however, SrCO3 and CeO2 converted directly to Sr2CeO4 at a lower temperature. The XRD results showed the crystal structure of Sr2CeO4 was orthorhombic. The emission spectra displayed a broad band with maximum at about 465 nm. The mechanical milling of starting power mixture and the sintering temperature had no effect on this emission spectra.
