1616558-97-4Relevant academic research and scientific papers
Synthesis of second order nonlinear optical multichromophore based on double-donors with enhanced electro-optic coefficients and thermal stability
Chen, Xunyu,Geng, Xinhua,He, Shan,Huang, Zelin,Liang, Zhiwei,Liu, Fenggang,Shi, Lei,Wang, Jiahai,Zeng, Ziying,Zhang, Shumin
, (2022/05/17)
Our work was related to the systhesis of several nonlinear optical dendrimers L1-L3 with identical Bis(N,N-diethyl)aniline-derived donor bridge and phenyl-trifluoromethyl-tricyanofuran acceptor. The dendritic structure of multichromophores can effectively reduce the electrostatic interaction between chromophores. And the strong acceptor result in large first-order hyperpolarizability of the chromophores. Multichromophores L2-L3 showed very high poling efficiencies due to large steric hindrance and first-order hyperpolarizability value of chromophores. A large poling efficiency (2.10 ± 0.08 nm2/V2) and r33 (205 p.m./V) have been achieved for neat chromophore L3 thin films at 1310 nm. Besides, the glass transition temperature (Tg) of L2 and L3 has greatly improved to 125 °C and 133 °C, respectively. All of these provided an new insights into molecular design of chromophore with enchanced poling efficiency and high thermal stability.
Systematic study on the optimization of a bis(N,N-diethyl)aniline based NLO chromophore via a stronger electron acceptor, extended π-conjugation and isolation groups
Bo, Shuhui,Chen, Zhuo,Huo, Fuyang,Li, Ya,Liu, Tongtong,Xiao, Hongyan,Zhang, Hua
, p. 3343 - 3352 (2022/05/17)
A series of highly polarizable chromophores A-F based on the same bis(N,N-diethyl)aniline donor, the tricyanofuran (TCF) and CF3-Ph-TCF acceptor linked via thiophene, alkoxy chain modified thiophene and extended thiophene π-conjugations has been synthesized and systematically investigated. Density functional theory (DFT) calculations suggested that the optimal structure F showed a first-order hyperpolarizability (β) value of 551.0 × 10?30 esu which was relatively high for a single molecule. These chromophores showed good thermal stability with their decomposition temperatures all above 220 °C. By doping chromophores A-F with a loading of 25 wt% in amorphous polycarbonate (APC), electro-optic coefficients (r33) up to 149, 139, 148, 142, 252 and 305 pm V?1 at 1310 nm can be achieved, respectively. The normalized r33 value was increased to 19.37 × 10?19 pm cc per (V molecules) for F possessing alkoxy chains as the isolation group, extended thiophene bridge and CF3-Ph-TCF acceptor, indicating that the isolation groups play an important role in suppressing dipole-dipole interactions especially for those chromophores with super high β values. The largest r33 of 358 pm V?1 was achieved for chromophore F with the doping concentration of 35 wt%. The high r33 value, good thermal stability and good yield suggest the potential use of the new chromophores in nonlinear optical areas.
With double-to the body structure of the organic second-order non-linear optical chromophore and synthetic method and use (by machine translation)
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Paragraph 0084-0085, (2017/10/13)
The present invention has offered a kind of double-to the body structure of the organic second-order non-linear optical chromophore, the with double to the body structure of the organic second-order non-linear optical chromophore has the following structure: Wherein R1 Is methyl or trifluoromethyl; R2 Is alkyl or phenyl. The invention used with a two-to the body structure of the electron donor, conjugated π electronic bridge and electronic receptor are combined together in the molecule after the electronic transmission capacity, can improve the electro-optic coefficient. In addition, the synthesized chromophores with double to the body structure, can effectively reduce the intermolecular interaction force. The said organic second order non-linear optical chromophore with amorphous polycarbonate doped for synthetic polymer film, the polymer film can be used as a synthetic light signal modulation material. (by machine translation)
Synthesis and optical nonlinear property of Y-type chromophores based on double-donor structures with excellent electro-optic activity
Yang, Yuhui,Xu, Huajun,Liu, Fenggang,Wang, Haoran,Deng, Guowei,Si, Peng,Huang, Heyan,Bo, Shuhui,Liu, Jialei,Qiu, Ling,Zhen, Zhen,Liu, Xinhou
, p. 5124 - 5132 (2014/07/07)
New Y-type chromophores FTC-yh1 and FTC-yh2 containing bis(N,N-diethyl) aniline as a novel electron-donor, thiophene as a π-conjugated bridge and tricyanofuran (TCF) as an acceptor have been synthesized and systematically investigated in this paper. Density functional theory (DFT) was used to calculate the HOMO-LUMO energy gaps and first-order hyperpolarizability (β) of these chromophores. These chromophores showed better thermal stability with their decomposition temperatures all above 240 °C. Most importantly, the high molecular hyperpolarizability of these chromophores can be effectively translated into large electro-optic (EO) coefficients (r33) in poled polymers. The doped film-A containing 25 wt% chromophore FTC-yh1 displayed a value of 149 pm V-1 at 1310 nm, and the doped film-B containing FTC-yh2 showed a value of 143 pm V-1 at the concentration of 25 wt%. These values are almost four times higher than the EO activity of usually reported traditional single (N,N-diethyl)aniline nonlinear optical (NLO) chromophores FTC. High r33 values indicated that the double donors of the bis(N,N-diethyl)aniline unit can efficiently improve the electron-donating ability and reduce intermolecular electrostatic interactions, thus enhancing the macroscopic EO activity. These properties, together with the good solubility, suggest the potential use of the new chromophores as advanced material devices.
