832079-41-1Relevant academic research and scientific papers
Heat-induced formation of one-dimensional coordination polymers on Au(111): An STM study
Pham, Tuan Anh,Song, Fei,Alberti, Mariza N.,Nguyen, Manh-Thuong,Trapp, Nils,Thilgen, Carlo,Diederich, Fran?ois,St?hr, Meike
supporting information, p. 14473 - 14476 (2015/09/28)
The formation of one-dimensional coordination polymers of cyano-substituted porphyrin derivatives on Au(111) induced by thermal annealing is demonstrated by means of scanning tunnelling microscopy. The polymer is stabilised by an unusual threefold coordin
Two-dimensionally extended porphyrin tapes: Synthesis and shape-dependent two-photon absorption properties
Nakamura, Yasuyuki,Jang, So Young,Tanaka, Takayuki,Aratani, Naoki,Lim, Jong Min,Kim, Kil Suk,Kim, Dongho,Osuka, Atsuhiro
experimental part, p. 8279 - 8289 (2009/09/29)
We report the synthesis and characterization of L- and T-shaped porphyrin tapes as extensible structural motifs of two-dimensionally extended porphyrin tapes. The two-photon absorption (TPA) cross-section values (σ (2) for L- and T-shaped porphyrin tapes as well as those for linear trimeric and tetrameric porphyrin tapes were measured by an open-aperture Z-scan method at 2300 nm, a wavelength at which the one-photon absorption contribution is either zero or almost negligible. Under these conditions, the σ(2) values for the linear porphyrin tape trimer and tetramer were determined to be 18500 and 41200 GM, respectively. The σ (2) value for the L-shaped trimer was determined to be 8700 GM, which is only half that of the linear trimer, whereas the σ(2) value for the Tshaped tetramer was measured to be 35700 GM. These results clearly indicate the dependence of the TPA crosssection on the molecular shape, which underscores the importance of directionality in the jt-conjugation pathway for the enhancement of TPA crosssection.
