We have designed and synthesis a new compound of zinc-porphyrin bearing four pyrene groups （ZnP-t-P（py）4） and prepared a new hybrid materials of ZnP-t-P（py）4 with graphene oxide （GO） via non-covalent interacti...We have designed and synthesis a new compound of zinc-porphyrin bearing four pyrene groups （ZnP-t-P（py）4） and prepared a new hybrid materials of ZnP-t-P（py）4 with graphene oxide （GO） via non-covalent interactions. The ZnP-t-P（py）4, along with four pendant pyrene entities ZnP-t-P（py）4, stacking on the （GO） surface due to n-~ interac- tions, has been revealed by AFM measurements. FTIR, UV-vis absorption confirm the non-covalent functionaliza- tion of the GO. Raman spectral measurements revealed the electronic structure of the GO to be intact upon hybrid formation. In this donor-acceptor nanohybrid, the fluorescence ofphotoexcited ZnP-t-P（py）4 is effectively quenched by a possible electron-transfer process. The fluorescence and photoelectrical response measurements also showed that this hybrid may act as an efficient photoelectric conversion material for optoelectronic applications.展开更多
Four piperazine-appended [60] fuilerenes (1a-1d) were synthesized and characterized. Their activities of scavenging radical were studied via UV-Vis and EPR. The results indicate that light irradiation is of advantage ...Four piperazine-appended [60] fuilerenes (1a-1d) were synthesized and characterized. Their activities of scavenging radical were studied via UV-Vis and EPR. The results indicate that light irradiation is of advantage to increase the activity of scavenging radical.展开更多
1,2-（1-Acridin-10＇-yl-2-aza-2-methylprop-1,3-ylene）fullerene was synthesized firstly and characterized by UV-Vis, ^1H NMR, ^13C NMR and electrospray ionization mass spectroscopy, which is capable of forming a stabl...1,2-（1-Acridin-10＇-yl-2-aza-2-methylprop-1,3-ylene）fullerene was synthesized firstly and characterized by UV-Vis, ^1H NMR, ^13C NMR and electrospray ionization mass spectroscopy, which is capable of forming a stable complex with zinc tetraphenylporphyrin via the axial ligation. The steady state fluorescence studies show efficient quenching of the zinc tetraphenylporphyrin emission upon axial coordination of acridine attached to C60.展开更多
文摘We have designed and synthesis a new compound of zinc-porphyrin bearing four pyrene groups （ZnP-t-P（py）4） and prepared a new hybrid materials of ZnP-t-P（py）4 with graphene oxide （GO） via non-covalent interactions. The ZnP-t-P（py）4, along with four pendant pyrene entities ZnP-t-P（py）4, stacking on the （GO） surface due to n-~ interac- tions, has been revealed by AFM measurements. FTIR, UV-vis absorption confirm the non-covalent functionaliza- tion of the GO. Raman spectral measurements revealed the electronic structure of the GO to be intact upon hybrid formation. In this donor-acceptor nanohybrid, the fluorescence ofphotoexcited ZnP-t-P（py）4 is effectively quenched by a possible electron-transfer process. The fluorescence and photoelectrical response measurements also showed that this hybrid may act as an efficient photoelectric conversion material for optoelectronic applications.
基金This work was supported by the National Natural Science Foundation of China (Grant No. 29971016) the Doctoral Foundation of Ministry of Education of China.
文摘Four piperazine-appended [60] fuilerenes (1a-1d) were synthesized and characterized. Their activities of scavenging radical were studied via UV-Vis and EPR. The results indicate that light irradiation is of advantage to increase the activity of scavenging radical.
基金Project supported by the National Natural Science Foundation of China （Nos. 20271002, 20490217）, Excellent Young Scholar Foundation （No. 04046065） and the Natural Science Foundation of Anhui Province （No. 00045122）, the Scientific Research Foundation for the Returned 0verseas Chinese Scholars and Excellent Young Teachers Program of the Ministry of Education of China, and the Education Department of Anhui Province （Nos. 2001KJ 115ZD, 2006KJ006TD）.Acknowledgement The authors wish to thank Hu Ji-Ping and Yang Gao- Sheng for their assistance with NMR.
文摘1,2-（1-Acridin-10＇-yl-2-aza-2-methylprop-1,3-ylene）fullerene was synthesized firstly and characterized by UV-Vis, ^1H NMR, ^13C NMR and electrospray ionization mass spectroscopy, which is capable of forming a stable complex with zinc tetraphenylporphyrin via the axial ligation. The steady state fluorescence studies show efficient quenching of the zinc tetraphenylporphyrin emission upon axial coordination of acridine attached to C60.
