Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Towards the synthesis of poly(azafulleroid)s: main chain fullerene oligomers for organic photovoltaic devices

Full text
Author(s):
Show less -
Bregadiolli, Bruna A. ; Ramanitra, Hasina H. ; Ferreira, Rodrigo Marques ; Corcoles, Laura ; Gomes, Milton S. ; Kang, Lauren ; Combe, Craig M. S. ; Silva, Hugo Santos ; Lavarda, Francisco C. ; Begue, Didier ; Dagron-Lartigau, Christine ; Rocco, Maria Luiza M. ; Luscombe, Christine K. ; Olivati, Clarissa A. ; Graeff, Carlos F. O. ; Hiorns, Roger C.
Total Authors: 16
Document type: Journal article
Source: Polymer International; v. 66, n. 10, p. 1364-1371, OCT 2017.
Web of Science Citations: 1
Abstract

For the first time, imino chemistry is explored for the synthesis of main chain fullerene oligomers and low-molecular-weight polymers. Oligo(aziridinofullerene)s and low-molecular-weight poly(aziridinofullerene)s (PAFs) are prepared by 1,3-dipolar cycloadditions of bis(azidoalkyl) comonomers to C-60. The effect of the steric bulk of the comonomer is studied and it is found that PAF solubilities and molecular weights are increased with longer comonomer side-chains. Initial and promising photovoltaic characterizations show commensurate improvements in properties. Interestingly, the PAFs exhibit lowest unoccupied molecular orbitals close to those of phenyl-C-61-butyric acid methyl ester. Routine characterizations are correlated with DFT/B3LYP/6-31G(d) to understand structural and electronic behaviours. It is expected that higher molecular weights may be obtained through comonomer variations and that this novel methodology will open a route to interesting materials for optoelectronics. (C) 2017 Society of Chemical Industry (AU)

FAPESP's process: 11/02205-3 - Hybrid solar cell based on TiO2 nanoparticles
Grantee:Bruna Andressa Bregadiolli
Support type: Scholarships in Brazil - Doctorate (Direct)