Efficient violet non-doped organic light-emitting device based on a pyrene derivative with novel molecular structure was written by Wang, Zhi-Qiang;Liu, Chuan-Lin;Zheng, Cai-Jun;Wang, Wei-Zhou;Xu, Chen;Zhu, Mei;Ji, Bao-Ming;Li, Fan;Zhang, Xiao-Hong. And the article was included in Organic Electronics in 2015.Product Details of 1890136-54-5 The following contents are mentioned in the article:
A novel pyrene derivative 1,6-bis[2-(3,5-diphenylphenyl)phenyl]pyrene (DPPP) was successfully designed and synthesized. X-ray anal. shows the pyrene core in this compound is fully protected by the introduced 3,5-diphenylphenyl groups, resulting no π-π stacking between pyrene units, and the dihedral angle between pyrene ring and adjacent benzene ring is as large as 80.1°. This structure character leads to DPPP achieving a violet emission both in solution and as a thin solid film. Furthermore, DPPP exhibits high thermal properties due to its non-coplanar structure and large mol. size. The non-doped electroluminescence device employing DPPP as emitting layer shows a stable and efficient violet emission with a maximum external quantum efficiency of 2.2% and a CIE coordinate of (0.16, 0.04), which is remarkable in reported violet devices. This study involved multiple reactions and reactants, such as 2-Bromo-5′-phenyl-1,1′:3′,1”-terphenyl (cas: 1890136-54-5Product Details of 1890136-54-5).
2-Bromo-5′-phenyl-1,1′:3′,1”-terphenyl (cas: 1890136-54-5) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbonbromine bond is electrophilic in nature. Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Product Details of 1890136-54-5
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary