作者:Kazuya Ogawa、Atsushi Ohashi、Yoshiaki Kobuke、Kenji Kamada、Koji Ohta                                    
                                    
                                        DOI:10.1021/ja035056i
                                    
                                    
                                        日期:2003.11.1
                                    
                                    Two-photon absorption (2PA) properties of self-assembled porphyrins were investigated. The butadiyne-linked porphyrin array exhibited a 20 times larger 2PA cross section than the meso-meso-linked self-assembled array due to the expansion of pi-conjugation. Higher-order nonlinear absorption was also observed in the former porphyrin.