Thermally activated delayed fluorescence(TADF)emitter is a promising organic light-emitting diode(OLED)material due to low cost,wide luminous color gamut and 100%exciton utilization efficiency[1].To achieve high TADF ...Thermally activated delayed fluorescence(TADF)emitter is a promising organic light-emitting diode(OLED)material due to low cost,wide luminous color gamut and 100%exciton utilization efficiency[1].To achieve high TADF performance,a feasible strategy is to construct a twisted donor–acceptor(D–A)unit,decreasing the overlap between the highest occupied molecular orbital(HOMO)and the lowest unoccupied molecular orbital(LUMO),and minimizing the energy gap(∆E_(ST))between the lowest singlet(S_(1))and triplet(T_(1))states[2,3].However,this long-range charge transfer feature is often disadvantageous for achieving high oscillator strengths(f)and radiative transition rates(k_(r))[4](Fig.1(a)).展开更多
Hepatitis B virus(HBV)infection is one of the most common causes for liver related morbidity and mortality worldwide.Liver fibrosis and cirrhosis occur in the course of chronic HBV infection,with the increasing risk t...Hepatitis B virus(HBV)infection is one of the most common causes for liver related morbidity and mortality worldwide.Liver fibrosis and cirrhosis occur in the course of chronic HBV infection,with the increasing risk to develop hepatocellular carcinoma.In about 95%of adults’acute hepatitis B virus infection is self-limited,whereas in 90%of young children HBV infection leads to chronic progression.It is likely that a fully developed immune system contributes to HBV clearance(Dandri and Locarnini 2012;Bertoletti and Kennedy 2015).展开更多
基金This work was supported by the National Natural Science Foundation of China(21975119)L.Ding thanks the open research fund of Songshan Lake Materials Laboratory(2021SLABFK02)the National Natural Science Foundation of China(51922032 and 21961160720).
文摘Thermally activated delayed fluorescence(TADF)emitter is a promising organic light-emitting diode(OLED)material due to low cost,wide luminous color gamut and 100%exciton utilization efficiency[1].To achieve high TADF performance,a feasible strategy is to construct a twisted donor–acceptor(D–A)unit,decreasing the overlap between the highest occupied molecular orbital(HOMO)and the lowest unoccupied molecular orbital(LUMO),and minimizing the energy gap(∆E_(ST))between the lowest singlet(S_(1))and triplet(T_(1))states[2,3].However,this long-range charge transfer feature is often disadvantageous for achieving high oscillator strengths(f)and radiative transition rates(k_(r))[4](Fig.1(a)).
文摘Hepatitis B virus(HBV)infection is one of the most common causes for liver related morbidity and mortality worldwide.Liver fibrosis and cirrhosis occur in the course of chronic HBV infection,with the increasing risk to develop hepatocellular carcinoma.In about 95%of adults’acute hepatitis B virus infection is self-limited,whereas in 90%of young children HBV infection leads to chronic progression.It is likely that a fully developed immune system contributes to HBV clearance(Dandri and Locarnini 2012;Bertoletti and Kennedy 2015).
