1574571-53-1Relevant academic research and scientific papers
Pyridal[2,1,3]thiadiazole as strong electron-withdrawing and less sterically-hindered acceptor for highly efficient donor-acceptor type NIR materials
Jiang, Jianxia,Li, Xianglong,Hanif, Muddasir,Zhou, Jiadong,Hu, Dehua,Su, Shijian,Xie, Zengqi,Gao, Yu,Yang, Bing,Ma, Yuguang
, p. 11053 - 11058 (2017)
Pyridal[2,1,3]thiadiazole (PT) is an analogue of benzo[1,2,5]thiadiazole (BT), which is a common acceptor in charge transfer (CT) chromophores. Compared with BT, PT is more electron-deficient and less sterically hindered. Herein we demonstrate the effect of using PT as proto-acceptor in the design of D-A type NIR emitting materials. The compound p-TPA-PT-CN was synthesized, which combines PT with the donor triphenylamine (TPA) and cyano-substituent (CN), and shows NIR emission at ～700 nm with a high PL efficiency of 0.3 in both solution and solid state. The strong D-A interaction within p-TPA-PT-CN results in a low energy charge-transfer state. The pyridine nitrogen of PT reduces the steric hindrance between PT and the adjacent TPA donor segment, resulting in increased planarity and strong mixing (hybridization) of CT and π-π states (HLCT). Such strong mixing contributes towards a higher luminous efficiency. The OLEDs fabricated with p-TPA-PT-CN as the emitting layer exhibited an EQE of 1.47% and Lmax = 640 cd m-2, which are amongst the highest values reported for NIR-OLED devices.
Synthesis and photovoltaic properties of new [1,2,5]thiadiazolo[3,4-c] pyridine-based organic Broadly absorbing sensitizers for dye-sensitized solar cells
Ying, Weijiang,Zhang, Xiaoyu,Li, Xin,Wu, Wenjun,Guo, Fuling,Li, Jing,?gren, Hans,Hua, Jianli
, p. 3901 - 3908 (2014/06/09)
In this paper, by introducing [1,2,5]thiadiazolo[3,4-c]pyridine (PT) as an auxiliary acceptor into the molecular design of organic sensitizers, we have synthesized four new dyes (PT1-PT4) for dye-sensitized solar cells (DSSCs) with triphenylamine or N,N-d
