Bridged tetraphenylethylene-based supramolecular polymer light capture system, and preparation and application thereof

[0051] Preparation of Compound M:

[0052] In a 250mL three-necked flask, add compound P (2.58g, 5.5mmol), add compound Q (3.60g, 11.9mmol), add dry chloroform (CHCl 3 , 60mL), stirred at room temperature for 12h. Post-treatment: add 20 mL of chloroform, wash with 1M hydrochloric acid (80 mL), and saturated NaHCO 3 solution, saturated NaCl solution, and anhydrous MgSO 4 Dry, filter with suction, spin off the solvent to about 5mL, add dropwise to MeOH stirred at high speed, a white solid precipitates, reflux for 3 hours, and filter with suction to obtain a white solid powder which is compound M (4.27g, 4.51mmol), the yield was 82%.

[0053] The H NMR spectrum of compound M is as image 3 shown. 1 H NMR (300MHz, CDCl 3 ):δ(ppm)=13.22(s,2H,NH),12.00(s,2H),10.37(s,2H),7.70(d,J=7.6Hz,2H),7.25-7.19(m,6H) ,6.99-6.90(m,6H),6.81(d,J=7.8Hz,2H),5.81(s,2H),4.13(t,J=6.3Hz,4H),3.56-3.48(m,4H), 2.33-2.25 (m, 2H), 2.20-2.15 (m, 4H), 1.71-1.50 (m, 8H), 1.29-1.19 (m, 8H), 0.90-0.82 (m, 12H

[0057] Preparation of Supramolecular Polymer Light Harvesting System:

[0058] Step 1, weigh 91mg cetyl ammonium bromide to a 250mL volumetric flask, dilute to 250mL with deionized water, and prepare an aqueous solution with a concentration of 1.0mmol / L;

[0059] Step 2, weigh 96.1mg of compound M into a 10mL volumetric flask, add chloroform to make up to 10mL, and prepare a 10mmol / L mother solution.

[0060] Step 3, weigh 5.2mg of compound NDI into a 10mL volumetric flask, add chloroform to make up to 10mL, and prepare a 1.0mmol / L mother liquor;

[0061] Step 4, pipette the mother liquor of compound M and the mother liquor of compound NDI respectively with a pipette gun, add to a 10mL volumetric flask and mix well, then add CTAB aqueous solution to constant volume, form aqueous phase dispersed nanoparticles after ultrasonication for 30min, wherein compound M The concentration is 5×10 -5 mol / L, the corresponding M / NDI concentration ratios are 100 / 1, 150 / 1, 200 / 1