Zwitterionic organic small molecular solar cell cathode interface material, as well as preparation method and use thereof
A technology of electrodes and active layers, applied in the field of solar cell materials
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[0197] The film can optionally be prepared by conventional techniques in the art, such as spin coating, doctor blade, printing and other processes. In another preferred example, the preparation method of the film includes the following steps:
[0198] providing a solution in which the compound of formula A is dissolved; and
[0199] A surface is provided on which the solution is film-formed.
[0200] In another preferred embodiment, the solution is prepared by dissolving the compound of formula A in an organic solvent. The organic solvent is preferably an alcohol solvent, including (but not limited to): methanol, ethanol, or a combination thereof; more preferably, the organic solvent is methanol.
[0201] The surface type is not particularly limited, and can be the surface of any product, such as the surface of organic solar cell electrodes, organic light emitting diodes, organic field effect transistor electrodes and other product surfaces.
[0202] In another preferred ex...
Embodiment 1
[0270] The synthesis of FPF-NSO3, this compound structure is:
[0271]
[0272] The preparation method of FPF-NSO3 is:
[0273]
[0274] Under nitrogen protection, compound FPF-N (100mg, 0.14mmol), propane sultone (177mg, 1.40mmol) and tetrahydrofuran (10mL) were added to a 50mL round-bottomed flask, and heated to 80°C for 12 hours to produce a white precipitate. Methanol (5 mL) was added to completely dissolve the precipitate, and the temperature was maintained for 24 hours. After the reaction, cool to room temperature, remove the solvent by rotary evaporation, then add a small amount of methanol to dissolve the solid, drop it into a large amount of ethyl acetate to obtain a white precipitate, filter, wash with ethyl acetate, tetrahydrofuran and chloroform successively, and dry to obtain a white solid (130mg , yield 79%).
[0275] 1 H NMR (400MHz,D 2 O), δ(ppm): 8.22(br,2H),7.72(d,J=7.2Hz,2H),7.62(br,4H),7.58-7.48(m,6H),7.32(d,J=4.8 Hz,2H),7.08(br,2H),3.44(br,8H),2...
Embodiment 2
[0277] The synthesis of FBF-NSO3, this compound structure is:
[0278]
[0279] FBF-NSO The preparation method is:
[0280]
[0281] Under nitrogen protection, compound FBF-N (75mg, 0.10mmol), propane sultone (122mg, 1.00mmol) and tetrahydrofuran (10mL) were added to a 50mL round-bottomed flask, and heated to 80°C for 12 hours to produce a white precipitate. Methanol (10 mL) was added to completely dissolve the precipitate, and the temperature was maintained for 48 hours. Cool to room temperature after the reaction, remove the solvent by rotary evaporation, then add a small amount of methanol to dissolve the solid, drop it into a large amount of ethyl acetate to obtain a yellow precipitate, filter, and recrystallize from ethanol to obtain a yellow solid (60 mg, yield 48%).
[0282] 1 H NMR (400MHz, CD 3 OD),δ(ppm):8.45(s,2H),8.26(d,J=7.6Hz,2H),8.15(s,2H),8.04(d,J=8.4Hz,2H),7.95(br, 2H),7.84(br,2H),7.53(m,4H),3.48(m,8H),2.97-2.72(m,40H),2.01(br,16H).HRMS(m / z):calcd.fo...
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