Author
Hu, Guangyu
Other Contributors
Dinolfo, Peter; Tomozawa, Minoru; Ozisik, Rahmi; Ullal, Chaitanya;
Date Issued
2019-05
Subject
Materials science and engineering
Degree
MS;
Terms of Use
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.;
Abstract
Two perylene diimides (PDI) were synthesized to enable the preparation of multilayer films through a layer-by-layer (LbL) assembly technique using copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC). Multilayer films were fabricated with Ph-PDI or Pro-PDI (aniline groups or propargyl groups at the diimide positions) as perylene layers and either 1,3,5-tris(azidomethyl)benzene (L1), 1,4-bis(azidomethyl)benzene (L2) or 4,4’-di- azido-2,2’-stilbenedisulfonic acid disodium salt (L3) as linker layers. As shown from UV-Visible absorption and fluorescence spectroscopic studies, among the three linkers, PDIs with L1 displayed linear growth properties and the highest fluorescence intensity. Multilayer films of Pro-PDI with L1 had higher relative fluorescent intensity than that of Ph-PDI. Specular X-ray Reflectivity (XRR) and DFT calculations exhibited a higher tilting angle structure with less density was formed for Pro-PDI multilayer films, indicating more H-type aggregates present for Ph-PDI multilayer films. The achievable tunability of PDIs aggregation and the corresponding fluorescence properties may be illuminating for fabrication of new light harvesting arrays.;
Description
May 2019; School of Engineering
Department
Dept. of Materials Science and Engineering;
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection;
Access
Restricted to current Rensselaer faculty, staff and students. Access inquiries may be directed to the Rensselaer Libraries.;