Perylene diimide(PDI) derivatives, due to their special opto-electronic property, have been successfully utilized in organic field-effect transistor(OFET), solar cells, and as non-fullerene acceptor and others,while f...Perylene diimide(PDI) derivatives, due to their special opto-electronic property, have been successfully utilized in organic field-effect transistor(OFET), solar cells, and as non-fullerene acceptor and others,while few cases in organic light-emitting diodes(OLEDs). In this work, six perylene bisimide-based red emitters, N,N''-bis(2-decyltetradecyl)-1-([1,1':3',1''-terphenyl]-5'-yl)perylene-3,4,9,10-diimide(STPH),N,N'-bis(2-decyltetradecyl)-1,7-bis([1,1':3',1''-terphenyl]-5'-yl)perylene-3,4,9,10-diimide(DTPH), N,N''-bis(2-decyltetradecyl)-1-(5'-phenyl-[1,1':3',1''-terphenyl]-4-yl)perylene-3,4,9,10-diimide(STRPH), N,N0-bis(2-decyltetradecyl)-1,7-bis(5'-phenyl-[1,1':3',1''-terphenyl]-4-yl)perylene-3,4,9,10-diimide(DTRPH),N,N0-bis(2-decyltetradecyl)-1-(4-(2,2-diphenylvinyl)phenyl)perylene-3,4,9,10-diimide(STTPE) and N,N'-bis(2-decyltetradecyl)-1,7-bis(4-(2,2-diphenylvinyl)phenyl)perylene-3,4,9,10-diimide(DTTPE), with the excellent chemical, thermal and photo-chemical stability, are synthesized through the convenient Suzuki coupling reaction, in which, the fluorescent properties can be modified easily from ACQ to AIE by just simply changing the bulky volume of the introduced aromatic substituents. After being fabricated into organic light-emitting diodes, STRPH exhibits the best performance with the maximum luminescence, power efficiency, current efficiency and external quantum efficiency of 1,948 cd m^(-2), 2.04 lm W^(-1), 5.85 cd A^(-1), 4.93% at Commission Internationale de L'Eclairage(CIE) coordinates of(0.56, 0.34),as the result of the high efficient energy transfer and good energy match achieved in the device.展开更多
A new hydrazine probe was designed, which demonstrates ultrafast "turn-on" response towards hydrazine both in solution and as gas, due to the excellent AIE(aggregation-induced emission) characteristic of the...A new hydrazine probe was designed, which demonstrates ultrafast "turn-on" response towards hydrazine both in solution and as gas, due to the excellent AIE(aggregation-induced emission) characteristic of the yielded products. Excitedly, the corresponding fabricated test strips can report the presence of trace hydrazine as low as 10 nmol/L in aqueous medium in seconds conveniently,with very high selectivity in the pH value ranging from 3.0 to 14.0.展开更多
基金supported by the National Natural Science Foundation of China (51673151, 61575146 and 21325416)the Open Fund of the State Key Laboratory of Luminescent Materials and Device in South China University of Technology (2017skllmd-04)
文摘Perylene diimide(PDI) derivatives, due to their special opto-electronic property, have been successfully utilized in organic field-effect transistor(OFET), solar cells, and as non-fullerene acceptor and others,while few cases in organic light-emitting diodes(OLEDs). In this work, six perylene bisimide-based red emitters, N,N''-bis(2-decyltetradecyl)-1-([1,1':3',1''-terphenyl]-5'-yl)perylene-3,4,9,10-diimide(STPH),N,N'-bis(2-decyltetradecyl)-1,7-bis([1,1':3',1''-terphenyl]-5'-yl)perylene-3,4,9,10-diimide(DTPH), N,N''-bis(2-decyltetradecyl)-1-(5'-phenyl-[1,1':3',1''-terphenyl]-4-yl)perylene-3,4,9,10-diimide(STRPH), N,N0-bis(2-decyltetradecyl)-1,7-bis(5'-phenyl-[1,1':3',1''-terphenyl]-4-yl)perylene-3,4,9,10-diimide(DTRPH),N,N0-bis(2-decyltetradecyl)-1-(4-(2,2-diphenylvinyl)phenyl)perylene-3,4,9,10-diimide(STTPE) and N,N'-bis(2-decyltetradecyl)-1,7-bis(4-(2,2-diphenylvinyl)phenyl)perylene-3,4,9,10-diimide(DTTPE), with the excellent chemical, thermal and photo-chemical stability, are synthesized through the convenient Suzuki coupling reaction, in which, the fluorescent properties can be modified easily from ACQ to AIE by just simply changing the bulky volume of the introduced aromatic substituents. After being fabricated into organic light-emitting diodes, STRPH exhibits the best performance with the maximum luminescence, power efficiency, current efficiency and external quantum efficiency of 1,948 cd m^(-2), 2.04 lm W^(-1), 5.85 cd A^(-1), 4.93% at Commission Internationale de L'Eclairage(CIE) coordinates of(0.56, 0.34),as the result of the high efficient energy transfer and good energy match achieved in the device.
基金supported by the National Science Foundation of China(51573140 and 21325416)
文摘A new hydrazine probe was designed, which demonstrates ultrafast "turn-on" response towards hydrazine both in solution and as gas, due to the excellent AIE(aggregation-induced emission) characteristic of the yielded products. Excitedly, the corresponding fabricated test strips can report the presence of trace hydrazine as low as 10 nmol/L in aqueous medium in seconds conveniently,with very high selectivity in the pH value ranging from 3.0 to 14.0.
