A promising strategy for two-photon absorption materials by novel dicarbazole-conjugated C-60/C-70 fullerene derivatives

作者：Zeng, Gong chang; Ouyang, Xin hua; Yang, Ding qiao; Zeng, He ping^*

来源：Optical Materials, 2010, 32(5): 637-642.

DOI：10.1016/j.optmat.2010.01.011

• Fullerene
• CBP
• Cyclic voltammetry
• Optical limiting
• DFT
• Two-photon absorption

Two novel fullerene dyads C-60-CBP (3) and C-70-CBP (4) containing an electron donor 4,4'-dicarbazole-1,1'-biphenyl (CBP) unit have been prepared through 1,3-dipolar cycloaddition reactions in situ. Their structures are characterized by H-1 NMR, C-13 NMR, FTIR, and MALDI-TOF-MS. Spectroscopic and electrochemical properties of 3 and 4 are studied in detailed by UV-vis, fluorescence, and cyclic voltammetric analysis, which present diminutive electronic interactions between the C-60/C-70 and CBP units, and the half wave potentials of 3 and 4 are more negative than those of C-60/C-70. The two-photon absorption (TPA) properties are determined for them by Z-scan method. Their geometric were optimized by the OFT calculations on the level at 6-31G (d,p) basis set.

• 出版日期2010-3
• 单位华南师范大学; 华南理工大学