- Synthesis of giant rigid π-conjugated dendrimers
-
(Chemical Equation Presented) A novel family of giant π-conjugated dendrimers (G0, G1, and G2) solely constructed by 5,5,10,10,15,15- hexahexyltruxene units has been developed in a convergent manner through a Suzuki cross-coupling reaction. The overall yields to such large rigid conjugated dendrimers are quite satisfying. The structures and purity of these nanosize rigid dendrimers are verified by 1H and 13C NMR, MALDI-TOF MS, and elemental analysis.
- Jiang, Yang,Lu, Yi-Xuan,Cui, Yu-Xin,Zhou, Qi-Feng,Ma, Yuguo,Pei, Jian
-
-
Read Online
- Naphthalimide unit derivative-based small molecular receptor material, and preparation method and application thereof
-
The invention belongs to the field of organic photovoltaic materials, and particularly relates to a naphthalimide unit derivative-based small molecule acceptor material and a preparation method thereof, and the naphthalimide unit derivative-based small molecule acceptor material is used as an active layer to be applied to an organic solar cell device or a photoelectric detector. A small molecularphotovoltaic material with high thermal stability and excellent electron transport performance is obtained by coupling a plurality of donor unit central nucleuses with a mono-substituted naphthalimideunit derivative. The material can be applied to industrial production of organic solar cells and photoelectric detectors.
- -
-
Paragraph 0069-0072
(2021/02/20)
-
- Star-shaped electron acceptors containing a truxene core for non-fullerene solar cells
-
A series of new electron acceptors containing a truxene core with intense optical absorption were synthesized and used for non-fullerene organic solar cells. Due to the weak electron-donating characteristic of truxene core and thereby weak intramolecular charge transfer interaction from electron-donating core to electron-withdrawing end groups, the resulting new acceptors show relatively wide optical band-gap and high-lying lowest unoccupied molecular orbitals (LUMOs), which consequently lead to complementary light spectra with narrow band-gap donor polymers and high open circuit voltage (Voc) in solar cells. Particularly, Tr(Hex)6-3BR, a star-shaped planar acceptor, produced the highest power conversion efficiency of 2.1% with a high Voc of 1.02 V when blended with PTB7-Th.
- Lin, Kaiwen,Xie, Boming,Wang, Zhenfeng,Xie, Ruihao,Huang, Yunping,Duan, Chunhui,Huang, Fei,Cao, Yong
-
-
- Towards Monodisperse Star-Shaped Ladder-Type Conjugated Systems: Design, Synthesis, Stabilized Blue Electroluminescence, and Amplified Spontaneous Emission
-
A novel series of monodisperse star-shaped ladder-type oligo(p-phenylene)s, named as TrL-n (n=1–3), have been explored. Their thermal and electrochemical properties, fluorescence transients, photoluminescence quantum yields, density functional theory calc
- Jiang, Yi,Fang, Mei,Chang, Si-Ju,Huang, Jin-Jin,Chu, Shuang-Quan,Hu, Shan-Ming,Liu, Cheng-Fang,Lai, Wen-Yong,Huang, Wei
-
p. 5448 - 5458
(2017/04/27)
-
- Pyrene-Capped Conjugated Amorphous Starbursts: Synthesis, Characterization, and Stable Lasing Properties in Ambient Atmosphere
-
A family of trigonal starburst conjugated molecules (TrFPy, TrFPy, and TrF2Py) composed of a truxene core and pyrene cappers with various bridge lengths is synthesized and characterized. The incorporation of pyrene cappers successfully depress the crystallization tendency, resulting in enhanced glassy temperature and improved morphological stability of the thin films. The high photoluminescence yield in neat films and excellent thermal stability render these pyrene-capped starbursts promising lasing optical gain media. Low amplified spontaneous emission (ASE) thresholds (EthASE) of 180 nJ pulse-1 and 101 nJ pulse-1 were recorded for TrFPy and TrF2Py, respectively. One dimensional distributed feedback (1D DFB) lasers demonstrated lasing threshold of 9.3 kW/cm2 and 7.3 kW/cm2 for TrFPy (at 457 nm) and TrF2Py lasers (at 451 nm), respectively. The ASE performance of TrFPy and TrF2Py in an ambient condition was recorded with various annealing temperature (from 80 to 250 °C, 10 min). Surprisingly, TrFPy exhibited excellent ASE stability in an ambient condition, which is still detectable even after annealing at 250 °C for 10 min. The results suggest the pyrene-capped molecular design strategy is positive on improving the optical gain stability and meanwhile maintaining excellent lasing properties. Well-defined starburst conjugated macromolecules with pyrene moieties as end-capped groups are explored as the optical gain media for organic semiconductor lasers. The length of oligofluorene bridges between the truxene core and pyrene cappers is carefully tuned. The relationships between their morphology, thermal stability, and amplified spontaneous emission stability in an ambient condition are systematically investigated, suggesting that the pyrene-capped molecular design improves the optical gain stability.
- Xu, Weidong,Yi, Jianpeng,Lai, Wen-Yong,Zhao, Li,Zhang, Qi,Hu, Wenbo,Zhang, Xin-Wen,Jiang, Yi,Liu, Ling,Huang, Wei
-
p. 4617 - 4625
(2015/08/11)
-
- Fusing three perylenebisimide branches and a truxene core into a star-shaped chromophore with strong two-photon excited fluorescence and high photostability
-
A novel star-shaped chromophore, Tr-PBI, was constructed by fusing three perylenebisimide branches and a truxene core. Tr-PBI exhibits high photostability and excellent two-photon properties: the maximum of δTPA is 11000 GM at 990 nm and fluorescence quantum efficiency Φ is 0.40 in THF. The Royal Society of Chemistry 2012.
- Xie, Yuanpeng,Zhang, Xinfu,Xiao, Yi,Zhang, Youdi,Zhou, Fan,Qi, Jing,Qu, Junle
-
p. 4338 - 4340
(2012/05/19)
-
- Pure blue-light-emitting materials: Hyperbranched ladder-type poly(p-phenylene)s containing truxene units
-
A series of novel hyperbranched ladder-type poly(p-phenylene)s containing truxene units have been prepared through the Pd(0)-catalyzed Suzuki polymerization with an "A2 + B3" or "A 2 + B2+ B3" approac
- Wu, Yonggang,Hao, Xiaohui,Wu, Junling,Jin, Jia,Ba, Xinwu
-
experimental part
p. 731 - 738
(2011/10/08)
-