【摘 要】
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Graphite carbon nitride (g-C3N4) attracts wide-ranging research interest due to its extraordinary physicochemical properties and promising applications ranging
【机 构】
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College of Physics,Sichuan University,Chengdu 610065,China;College of Physics,Sichuan University,Che
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Graphite carbon nitride (g-C3N4) attracts wide-ranging research interest due to its extraordinary physicochemical properties and promising applications ranging from heterogeneous catalysis to fuel cells.In this work,we design different g-C3N4-based quantum dots (gCNQDs),carry out a systematic study of optical properties,and elucidate the shape selec-tivity,composite nanostructure,and outfield effect.In particular,composites of gCNQDs and metal nanochains present excellent optical response,making it applicable to bioimaging,nano-plasma devices,and metalloenzyme in infrared light related fields.Besides,QDs which original bridging nitrogen atoms are replaced by amino (-NH2),hydroxyl (-OH),and methyl (-CH3) functional groups respectively,have excellent spectral selectivity in the deep ultraviolet region.More interestingly,in the study of the laser interaction with materials,the gCNQDs exhibit extremely high stability and light cor-rosion resistance.Phase transition from insulation to metal is observed under the critical condition of about 5 eV intensity or 337 nm wavelength.All provided theoretical support for designs and applications in g-C3N4 quantum devices.
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