title: Conformationally Locked Tolans, β-Sheet Structures, and Photophysical Properties.
abstract: Conformationally locked tetrasubstituted tolans were synthesized by introducing a tether on the tolan. To demonstrate the utilities of these motifs, a β-hairpin structure (15) was synthesized, and its additional stabilizing effects were evaluated. Moreover, the photophysical properties of cyclic tolans and their β-sheet structure were investigated. The fluorescence quantum yield of cyclic tolan 12 is >1000 times stronger than its congener 1 in CH3CN.
authors.affiliation: Department of Chemistry, Inha University , 253 Yonghyundong, Namgu, Incheon 402-751, Republic of Korea.
authors.forename: Jung-Ho
authors.initials: JH
authors.lastname: Hong
authors.affiliation: Department of Chemistry, Inha University , 253 Yonghyundong, Namgu, Incheon 402-751, Republic of Korea.
authors.forename: Ananta Kumar
authors.initials: AK
authors.lastname: Atta
authors.affiliation: Department of Chemistry, Inha University , 253 Yonghyundong, Namgu, Incheon 402-751, Republic of Korea.
authors.forename: Kwang-Bok
authors.initials: KB
authors.lastname: Jung
authors.affiliation: Department of Chemistry, Inha University , 253 Yonghyundong, Namgu, Incheon 402-751, Republic of Korea.
authors.forename: Seul-Bi
authors.initials: SB
authors.lastname: Kim
authors.affiliation: Department of Chemistry, Chungnam National University , 99 Daehak-ro, Yuseong-go, Daejeon 305-764, Republic of Korea.
authors.forename: Jungseok
authors.initials: J
authors.lastname: Heo
authors.affiliation: Department of Chemistry, Inha University , 253 Yonghyundong, Namgu, Incheon 402-751, Republic of Korea.
authors.forename: Dong-Gyu
authors.initials: DG
authors.lastname: Cho
mesh_terms: D000114:Acetylene / Q000031:analogs & derivatives / Q000737:chemistry; D018360:Crystallography, X-Ray; D005453:Fluorescence; D008968:Molecular Conformation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D009842:Oligopeptides / Q000737:chemistry*; D017433:Protein Structure, Secondary
chemical_list: D009842:Oligopeptides; C044735:biphenylacetylene; D000114:Acetylene