title: Self-organized CdSe quantum dots onto the low bandgap 3-hexylthiophene/pyridine copolymers.
abstract: The low bandgap 3-hexylthiophene/pyridine copolymers (P3HT/PY) were synthesized and the composites of P3HT/PY and CdSe QDs were prepared. The characterization are performed with 1H NMR, UV-vis, PL, TEM, XPS and cyclic voltammetry (CV). The results show that the P3HT/PY copolymers have an electrochemical bandgap of 1.67 eV, while the composites show a broader absorption and a lower bandgap than the copolymers. The highly efficient fluorescence quenching of the composites indicates that the ultrafast charge transfer happened between the P3HT/PY copolymers and the CdSe QDs. The composites show a uniform dispersion and good compatibility, and the surface chemistry study verified the chemical bonding between them. In addition, both the copolymers and the composites exhibited p- and n-type doping ability, and the P3HT/PY/CdSe composites have a better donor-acceptor match, which is a promising p-n type semiconductor material.
authors: School of Chemical Engineering, Hefei University of Technology, Hefei 23009, China.
authors: Jin
authors: J
authors: Wang
authors: Xiaoxia
authors: X
authors: Luo
authors: Dalian
authors: D
authors: Kang
authors: Zhengfa
authors: Z
authors: Zhou
authors: Weibing
authors: W
authors: Xu
authors: Yang
authors: Y
authors: Jiang
mesh_terms: D003460:Crystallization / Q000379:methods*; D008422:Materials Testing; D016566:Organoselenium Compounds / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*; D045663:Quantum Dots; D013876:Thiophenes / Q000737:chemistry*
chemical_list: D016566:Organoselenium Compounds; D011725:Pyridines; D013876:Thiophenes; C526212:poly(3-hexyl)selenophene; C023666:pyridine