Skip to Main Content
 

Global Search Box

 
 
 
 

ETD Abstract Container

Abstract Header

Zero-dimensional and two-dimensional colloidal nanomaterials and their photophysics

Jiang, Zhoufeng, Jiang

Abstract Details

2018, Doctor of Philosophy (Ph.D.), Bowling Green State University, Photochemical Sciences.
Two-dimensional oriented attachment has been confirmed as the growth mechanism of PbS nanosheets by Horst Weller in 2010. By interrupting the growth of PbS nanosheets, we investigated the intermediate PbS products which include isolated PbS quantum dots, attached PbS quantum dots and porous PbS nanosheets. We linked the intermediate PbS products with their structure and optical properties by comparing the emissions from PbS quantum dots and emissions from PbS nanosheets. Meanwhile, we shield PbS nanosheets with a shell of CdS by cation exchange to improve their optical properties and tune their bandgaps. Furthermore, we found that PbS nanosheets can be completely converted into CdS nanosheets by cation exchange, while keeping the same morphology. Thus, we can compare their photophysics properties when they have the same quantum confinement dimensions. On the other hand, carbon nanodots have become a very promising nanomaterial for numerous bio-and optoelectronic applications since they have superior chemical stability and low toxicity compared to conventional inorganic semiconductor quantum dots. We investigated the origin of photoluminescence(PL) on citric-acid-derived carbon nanodots, particularly focusing on the excitation-dependent PL behavior. By conducting the absorption, PL and PL-excitation spectra, we succeed to observe the multi-emissive states of carbon nanodots.
Liangfeng Sun, PhD (Advisor)
Mikhail Zamkov, PhD (Committee Member)
Peter Lu, PhD (Committee Member)
Anita Simic, PhD (Other)
154 p.

Recommended Citations

Citations

  • Jiang, Jiang, Z. (2018). Zero-dimensional and two-dimensional colloidal nanomaterials and their photophysics [Doctoral dissertation, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1522964027555741

    APA Style (7th edition)

  • Jiang, Jiang, Zhoufeng. Zero-dimensional and two-dimensional colloidal nanomaterials and their photophysics. 2018. Bowling Green State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1522964027555741.

    MLA Style (8th edition)

  • Jiang, Jiang, Zhoufeng. "Zero-dimensional and two-dimensional colloidal nanomaterials and their photophysics." Doctoral dissertation, Bowling Green State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1522964027555741

    Chicago Manual of Style (17th edition)