The electroluminescence (EL) produced by a highly luminescent phosphorescent dye Cu-4(CdropCPh)(4)L-2 (L = 1.8-bis(di-phenylphosphino)-3,6-dioxaoctane, Cu-4) doped polymer as emitting layer is reported. The effects of...The electroluminescence (EL) produced by a highly luminescent phosphorescent dye Cu-4(CdropCPh)(4)L-2 (L = 1.8-bis(di-phenylphosphino)-3,6-dioxaoctane, Cu-4) doped polymer as emitting layer is reported. The effects of the charge injection balance on the polymers, in particular, poly(N-vinylcarbazole) (PVK) have been studied by using photoluminescence and electroluminescence spectroscopy. Changes in the emission spectra demonstrate the influence of the charge injection balance on the formation ratio of triplet and singlet excitons. This provides a new technical approach to realize the color patterning in polymer LEDs.展开更多
Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has been spreading globally since its initial outbreak in 2019.Substantial evidence has revealed that children who are receiving antitumor therapy or hematopo...Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has been spreading globally since its initial outbreak in 2019.Substantial evidence has revealed that children who are receiving antitumor therapy or hematopoietic stem cell transplantation(HSCT)present higher rates of severe illness and mortality[1].It is important to identify infected children with hematology and oncology diseases who have the tendency to develop worse outcomes of coronal virus disease 2019(COVID-19)during the early stage of COVID-19.Recent studies have demonstrated that vaccination against SARS-CoV-2 in adults can reduce the likelihood of infection and reduce the severity and mortality of COVID-19 when SARS-CoV-2 breakthrough infection occurs[2,3,4].However,the effectiveness of SARS-CoV-2 vaccination in children with hematology and oncology diseases is poorly defined due to the lack of relevant data,which might lead to vaccine hesitancy[5,6].展开更多
基金This work was supported by the National Nature Foundation of China (No. 597905006).
文摘The electroluminescence (EL) produced by a highly luminescent phosphorescent dye Cu-4(CdropCPh)(4)L-2 (L = 1.8-bis(di-phenylphosphino)-3,6-dioxaoctane, Cu-4) doped polymer as emitting layer is reported. The effects of the charge injection balance on the polymers, in particular, poly(N-vinylcarbazole) (PVK) have been studied by using photoluminescence and electroluminescence spectroscopy. Changes in the emission spectra demonstrate the influence of the charge injection balance on the formation ratio of triplet and singlet excitons. This provides a new technical approach to realize the color patterning in polymer LEDs.
文摘Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has been spreading globally since its initial outbreak in 2019.Substantial evidence has revealed that children who are receiving antitumor therapy or hematopoietic stem cell transplantation(HSCT)present higher rates of severe illness and mortality[1].It is important to identify infected children with hematology and oncology diseases who have the tendency to develop worse outcomes of coronal virus disease 2019(COVID-19)during the early stage of COVID-19.Recent studies have demonstrated that vaccination against SARS-CoV-2 in adults can reduce the likelihood of infection and reduce the severity and mortality of COVID-19 when SARS-CoV-2 breakthrough infection occurs[2,3,4].However,the effectiveness of SARS-CoV-2 vaccination in children with hematology and oncology diseases is poorly defined due to the lack of relevant data,which might lead to vaccine hesitancy[5,6].
