Please do not adjust margins All 1 H-NMR and C-NMR spectra of the compounds were carried out on a Varian 400 instrument (standard Trimethylsilane) at 298 K in CDCl3. The FT-IR spectra of the compounds were collected by a Bruker Fourier Transform Infrared (attenuated total reflection). The elemental analysis and the melting points were measured with Leco CHNS 932 and the Gallenkamp instruments, respectively. Target compounds were synthesised under an argon atmosphere and were prepared using a known literature procedure. The synthetic details and data are provided in the electronic supplementary information (ESI). In the synthesis of the chromophore, dichloromethane dried with CaH2 was performed. The completing processes of the reactions were tracked with Merck TLC plates (silica gel 60 on aluminum plate). Triethylamine, lithium bromide, carbon tetraiodide, boron trifluoride ethyl etherate, paraformaldehyde, triphenylphosphine, sodium azide, 4-hydroxybenzaldehyde, and other solvents-reagents were purchased from Sigma-Aldrich, Acros, TCI Chemicals, Merck, and used without further purification.