Herein,we directly prepared white fluorescent CDs(W-CDs) using 1,6-dihydroxynaphthalene(1,6-DHN)and L-asparagine(L-Asn) as carbon sources through a simple solvent-free method.As-prepared W-CDs can be obtained in high ...Herein,we directly prepared white fluorescent CDs(W-CDs) using 1,6-dihydroxynaphthalene(1,6-DHN)and L-asparagine(L-Asn) as carbon sources through a simple solvent-free method.As-prepared W-CDs can be obtained in high yield(95%).A relative pure white LEDs(WLEDs) were fabricated with Commission Internationale de Eclairage(CIE) coordinates of(0.32,0.31).As-prepared W-CDs will have promising future for a wide range of optoelectronic devices.展开更多
Main observation and conclusion A novel and facile approach towards highly luminescent CuNCs@MMI(2-mercapto-1-methylimidazole)has been developed within 30 s with the assistance of ionic liquids(ILs)-[Bmim]BF_(4).FT-IR...Main observation and conclusion A novel and facile approach towards highly luminescent CuNCs@MMI(2-mercapto-1-methylimidazole)has been developed within 30 s with the assistance of ionic liquids(ILs)-[Bmim]BF_(4).FT-IR spectra,Zeta potential.展开更多
Nonconjugated polymer dots(PDs)without largely conjugated structures entitle their advantages such as environment friendliness,nontoxicity,and intrinsic fluorescence.However,color-tunable PDs remain a challenge.Herein...Nonconjugated polymer dots(PDs)without largely conjugated structures entitle their advantages such as environment friendliness,nontoxicity,and intrinsic fluorescence.However,color-tunable PDs remain a challenge.Herein,polyvinyl pyrrolidone(PVP)and ascorbic acid(AA)are used to synthesize nonconjugated PDs,namely,PA PDs with intensive blue emission.The introduction of a third component,m-phenylenediamine(MPD),redshifted the emission to green.The asprepared color-tunable blue to green emissive PDs exhibit excellent properties,whether in solution or in solid state,originated from the mechanism of clusteringtriggered emission(CTE)induced by the overlap of electron-rich atoms,the strong inter/intrachain interaction.The quantum yields of blue and green PDs reached up to 15.07%and 28.22%,respectively.Furthermore,PA PDs were successfully applied to the highly efficient photocatalytic degradation for dyes:methylene blue(MB)and methyl orange(MO)were degraded by 89.9%and 93.8%within 20 min under visible light,respectively.展开更多
文摘Herein,we directly prepared white fluorescent CDs(W-CDs) using 1,6-dihydroxynaphthalene(1,6-DHN)and L-asparagine(L-Asn) as carbon sources through a simple solvent-free method.As-prepared W-CDs can be obtained in high yield(95%).A relative pure white LEDs(WLEDs) were fabricated with Commission Internationale de Eclairage(CIE) coordinates of(0.32,0.31).As-prepared W-CDs will have promising future for a wide range of optoelectronic devices.
基金This work was supported by the State Key Laboratory of Fine Chemicals,Dalian University of Technology(KF 1807).
文摘Main observation and conclusion A novel and facile approach towards highly luminescent CuNCs@MMI(2-mercapto-1-methylimidazole)has been developed within 30 s with the assistance of ionic liquids(ILs)-[Bmim]BF_(4).FT-IR spectra,Zeta potential.
基金Fundamental Scientific Research Business Expenses of Central Universities,Grant/Award Number:2342021DUT21ZD211。
文摘Nonconjugated polymer dots(PDs)without largely conjugated structures entitle their advantages such as environment friendliness,nontoxicity,and intrinsic fluorescence.However,color-tunable PDs remain a challenge.Herein,polyvinyl pyrrolidone(PVP)and ascorbic acid(AA)are used to synthesize nonconjugated PDs,namely,PA PDs with intensive blue emission.The introduction of a third component,m-phenylenediamine(MPD),redshifted the emission to green.The asprepared color-tunable blue to green emissive PDs exhibit excellent properties,whether in solution or in solid state,originated from the mechanism of clusteringtriggered emission(CTE)induced by the overlap of electron-rich atoms,the strong inter/intrachain interaction.The quantum yields of blue and green PDs reached up to 15.07%and 28.22%,respectively.Furthermore,PA PDs were successfully applied to the highly efficient photocatalytic degradation for dyes:methylene blue(MB)and methyl orange(MO)were degraded by 89.9%and 93.8%within 20 min under visible light,respectively.
