Efficient NIR emission from organic light-emitting devices based on acceptor-donor-acceptor (A-D-A) and donor-acceptor-donor (D-A-D) oligomers

fabrication of non-doped red organic light emitting diode using naturally occurring curcumin as a donor-acceptor-donor (d-a-d) emitting layer with very low turn-on voltage

the fabrication of a non-doped red organic light-emitting device (oled) has been developed using naturally occurring curcumin as an emissive layer of oled. in this research, the electroluminescent spectrum (el) of curcumin as a donor-acceptor-donor (d-a-d) chromophore was obtained at wavelength of 612 nm. also, the maximum external quantum efficiencies (eqe) for this device was measured and fou...

Donor Acceptor Donor-based π-Conjugated Oligomers for Nonlinear Optics and Near-IR Emission

Donor Acceptor Donor-based π-Conjugated Oligomers for Nonlinear Optics and Near-IR Emission Stefan Ellinger, Kenneth R. Graham, Pengjie Shi, Richard T. Farley, Timothy T. Steckler, Robert N. Brookins, Prasad Taranekar, Jianguo Mei, Lazaro A. Padilha, Trenton R. Ensley, Honghua Hu, Scott Webster, David J. Hagan, Eric W. Van Stryland, Kirk S. Schanze, and John R. Reynolds* Department of Chemistry...

Effect of Side Chains on Organic Donor (D) and Acceptor (A) Complexes and Photophysical Properties of D-A Dyads

Donor-acceptor phthalocyanine nanoaggregates.

A novel donor-acceptor bisphthalocyanine (bis-Pc, 1) in which two different Pc units (Zn(II)-Pc and Ni(II)-Pc) are linked via vinylene spacers to the pseudopara positions of a central [2.2]paracyclophane moiety is described. The synthesis of 1 is achieved by two successive Heck reactions of pseudopara-divinyl[2.2]paracyclophane 9 with, sequentially, a zinc(II)- and a nickel(II)-iodophthalocyani...

Donor-acceptor-acceptor (D-A-A) type 1,8-naphthalimides as non-fullerene small molecule acceptors for bulk heterojunction solar cells.

Donor-acceptor-acceptor (D-A-A) type 1,8-naphthalimide based small molecules SM1 and SM2 functionalized with tetracyanobutadiene (TCBD) and dicyanoquino-dimethane (DCNQ) modules, showing strong absorption in the visible and near-infrared (NIR) region are reported. TCBD and DCNQ linked SM1 and SM2 exhibit multi-redox waves. The electrochemical and optical HOMO-LUMO gaps show similar trends. Thes...