CAJ | 학술논문

通过改进的液相直接沉淀法制备了2,5-双(1'-偶氮基-2'-羟基-3'-萘甲酰基-邻-氯苯胺)噁唑(AZO)的纳米微粒,并将AZO纳米级颗粒固定在多壁碳纳米管上(MWCNT-AZO).利用透射电镜、X射线衍射、X射线光电子能谱和紫外-可见光吸收光谱表征了AZO纳米级颗粒和MWCNT-AZO纳米复合体系的结构.以AZO纳米微粒或MWCNT-AZO纳米复合材料作为载流子发生材料,制备单层光电导体,采用光致电压衰减法研究光电导体性能.结果表明,由于纳米尺寸效应,AZO纳米微粒的光电导性能要比本体AZO颗粒好的多.同时发现,相对于本体AZO和MWCNT/本体AZO复合材料,MWCNT-AZO纳米复合材料表现出更佳的光电导性能和更宽的光谱响应范围,这是MWCNT-AZO纳米复合材料的纳米尺寸效应以及AZO纳米微粒向MWCNT的电荷转移引起的.
통과개진적액상직접침정법제비료2,5-쌍(1'-우담기-2'-간기-3'-내갑선기-린-록분알)오서(AZO)적납미미립,병장AZO납미급과립고정재다벽탄납미관상(MWCNT-AZO).이용투사전경、X사선연사、X사선광전자능보화자외-가견광흡수광보표정료AZO납미급과립화MWCNT-AZO납미복합체계적결구.이AZO납미미립혹MWCNT-AZO납미복합재료작위재류자발생재료,제비단층광전도체,채용광치전압쇠감법연구광전도체성능.결과표명,유우납미척촌효응,AZO납미미립적광전도성능요비본체AZO과립호적다.동시발현,상대우본체AZO화MWCNT/본체AZO복합재료,MWCNT-AZO납미복합재료표현출경가적광전도성능화경관적광보향응범위,저시MWCNT-AZO납미복합재료적납미척촌효응이급AZO납미미립향MWCNT적전하전이인기적.
2, 5-bis ( 1'-Azo-2'-hydroxy-3'-naphthoyl-o-chloroanide ) oxazole ( AZO ) nanoparticles and the nanoscale AZO pigments immobilized on the outer shell of multiwalled carbon nanotubes (MWCNT-AZO) were prepared by a modified liquid phase reprecipitation method. The AZO nanoparticles and the MWCNT-AZO hybrid were characterized by means of TEM, XRD, XPS, and UV-Vis absorption. The photoconductivities of single-layered photoreceptors, where MWCNT-AZO hybrid or AZO nanoparticles served as the charge generation material (CGM), were studied by the xerographic photoinduced discharge method. The results showed that the photoconductivity of AZO nanoparticles was improved greatly compared to that of bulk AZO due to nanometer size effect. It was also found that the MWCNT-AZO nano hybrid showed broader and enhanced photosensitivity than MWCNT/bulk azo pigments (AZO) blend or the bulk AZO did, which was interpreted in terms of nanometer size effect of MWCNT-AZO hybrid and charge transfer from AZO nanoparticles to MWCNT.