Citation: Li-Ping Wang, Guang Li, Wen-Zhi Li, Chao-Lei Ban, Yu-Chao Li, Cong Guo, Meng-Meng Zhang, Ling-Yun Liu, Na-Na Lu, Meng-Zhu Zheng. Copolymers with fluorescence properties in mesoporous silica SBA-15: Synthesis and characterization[J]. Chinese Chemical Letters, ;2014, 25(12): 1620-1624. doi: 10.1016/j.cclet.2014.06.028
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A novel copolymer with fluorescence properties in mesoporous silica SBA-15 was prepared via a combination of surface-initiated reversible addition-fragmentation chain transfer (RAFT) polymerization and “click” chemistry. A sufficient amount of peroxide groups were introduced into mesoporous silica SBA-15 channel pores and were further used to initiate the RAFT polymerization of styrene and 4-vinylbenzyl azide, resulting in SBA-15 supported polystyrene-co-poly(4-vinylbenzyl azide) copolymer (PS-co-PVBA/SBA-15) hybrid material. The samples were characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), thermogravimetry analysis (TGA), N2 adsorption-desorption isotherms and X-ray diffraction (XRD), respectively. The results show that the styrene and 4-vinylbenzyl azide had copolymerized inside mesoporous silica SBA-15. Subsequently, Npropargyl-carbazole (PC) was connected to PS-co-PVBA/SBA-15 hybrid material via “click” reaction, resulting in PS-co-PVBC/SBA-15 with carbazole side groups hybrid material. The fluorescence spectrum is dominated by a broad band from 350 nm to 400 nm in narrow region and the maximum peak is 362 nm, indicating the characteristic absorption of the carbazole group of PS-co-PVBC/SBA-15 hybrid material.
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Keywords:
- SBA-15,
- RAFT,
- “Click” chemistry,
- Fluorescence properties
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