Journal of Nanotechnology and Materials ScienceJournal of Nanotechnology and Materials ScienceJournal of Nanotechnology and Materials ScienceJournal of Nanotechnology and Materials Science2377-1372Ommega Online PublishersNew Jersey, USA137510.15436/2377-1372.17.1375Research ArticleSynthesis and Optical Properties of Bisporphyrin Conjugated with NaphthalenebisimideSynthesis and Optical Properties of Bisporphyrin Conjugated with NaphthalenebisimideKazuyaOgawa 1Graduate Faculty of Interdisciplinary Research Faculty of Engineering University of Yamanashi 4-3-11 Takeda Kofu Yamanashi 400-8511 2Graduate School of Materials Science Nara Institute of Science and Technology 8916-5 Takayama Ikoma Nara 630-0101 Japan Editor* E-mail: kogawa@yamanashi.ac.jp
The authors have declared that no competing interests exist.
20171204201741JNMS-17-RA-137520022017280320172017Creative Commons Attribution LicenseThis is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. nbsp emsp emsp Novel D-A-D type ethynylene-linked bisporphyrin conjugated with naphthalene bisimide as an electron acceptor was synthesized by palladium-catalyzed cross-coupling reaction The red-shifted Soret and Q bands were observed in UV visible absorption spectra showing expansion of pi -conjugation The maximum effective two-photon cross section value was observed as 10100 GM at 960 nm measured using a nanosecond Z-scan method This value was 1 3 times larger than the value obtained for bisporphyrin without electron acceptor 10