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Laser-induced fabrication of single crystal zinc hydroxyl dodecylsulfate nano-sheets with excellent fluorescence emission

机译:激光诱导的具有出色荧光发射的单晶羟基十二烷基硫酸锌纳米片的制备

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摘要

An attractive strategy to convenient synthesis of free-standing single-crystal zinc hydroxyl dodecylsulfate (ZHDS) nano-sheets has been developed by simply using laser ablation of a bulk Zn metal target in a liquid medium containing deionized water and enough/excess sodium dodecylsufate (SDS). Taking advantage of enough/an excess amount of sodium dodecylsulfate (SDS), tightly packed and highly ordered layers of DS functional groups were generated and resulted in the crystallization of metallo-organic ZHDS nano-sheets over the plasma created by laser ablation of the Zn target. The experimental results confirm that the ZHDS nano-sheets are indeed softer materials and intercalated with numerous DS functional groups in crystal structures. The novel free-standing two-dimensional ZHDS nano-sheets exhibit excellent fluorescence emission at 417 nm. It has been proved that the hydroxyl (-OH) groups should play the main role in the outstanding photoluminescence in the blue-band region. Moreover, the strong blue emission can be changed to bright green-band emission (vacancy oxygen-related PL emission in ZnO) centered at about 516 nm after annealing the ZHDS nano-sheets at 400 degrees C for 3 hours. The excellent performances will be of great significance for ZHDS nano-sheets in low-cost metallo/organic light-emitting material and photo-electro-chemical bio-analysis in the future. Based on pulse laser fabrication in liquid, the new conjugation of metal complexes and organic compounds has opened up exciting classes of hybrid materials for applications spanning optoelectronics, energy conversion, photodynamic therapy, etc.
机译:通过简单地在含有去离子水和足够/过量十二烷基硫酸钠的液体介质中使用激光烧蚀大块Zn金属靶标,已经开发出一种方便合成自立式单晶羟基十二烷基硫酸锌(ZHDS)纳米片的有吸引力的策略。 SDS)。利用足够/过量的十二烷基硫酸钠(SDS),生成了紧密堆积且高度有序的DS官能团层,并导致金属有机ZHDS纳米片在通过激光烧蚀Zn产生的等离子体上结晶。目标。实验结果证实,ZHDS纳米片确实是较软的材料,并在晶体结构中插入了许多DS官能团。新型的独立式二维ZHDS纳米片材在417 nm处显示出出色的荧光发射。已经证明,羟基(-OH)基团应该在蓝带区域的杰出的光致发光中起主要作用。而且,在将ZHDS纳米片在400℃下退火3小时之后,强蓝色发射可以变为以约516nm为中心的亮绿色带发射(ZnO中的空位氧相关的PL发射)。优异的性能对于ZHDS纳米片在低成本金属/有机发光材料和光电化学生物分析中具有重要意义。基于液体中脉冲激光的制造,金属配合物和有机化合物的新结合为光学,电子转换,能量转换,光动力疗法等应用打开了令人兴奋的混合材料类别。

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