Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Mohamed S.H. Salem and Md. Imrul Khalid and Hiroaki Sasai and Shinobu Takizawa,Two-pot synthesis of unsymmetrical hetero[7]helicenes with intriguing optical properties,Tetrahedron,0040-4020,Elsevier BV,2023-03,133,,133266,https://cir.nii.ac.jp/crid/1360579820395662720,https://doi.org/10.1016/j.tet.2023.133266