title: A Colorimetric and Fluorimetric Chemodosimeter for Copper Ion Based on the Conversion of Dihydropyrazine to Pyrazine.
abstract: In this research, we successfully synthesized and fully characterized the new compound 5,8,13,16,21,24-hex-(triisopropylsilyl)ethynyl)-6,23-dihydro-6,7,14,15,22,23-hexaza-trianthrylene (HHATA, brown color in a mixed solvent of CH2 Cl2 /CH3 CN 1:1, v/v, weakly blue fluorescent), which can be easily oxidized to 5,8,13,16,21,24-hex-(triisopropylsilyl)ethynyl)-6,7,14,15,22,23-hexazatrianthrylene (HATA) (yellow color in CH2 Cl2 /CH3 CN 1:1, v/v), red fluorescent) by Cu(2+) ions. This reaction only proceeds efficiently in the presence of Cu(2+) ions when compared with other common metal ions such as Fe(3+) , Co(2+) , Mn(2+) , Hg(2+) , Ni(2+) , Pb(2+) , Ag(+) , Mg(2+) , Ca(2+) , K(+) , Na(+) , and Li(+) . Our result suggests that this reaction can be developed as an effective method for the detection of Cu(2+) ions.
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore.|School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China.
authors.forename: Junbo
authors.initials: J
authors.lastname: Li
authors.affiliation: School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China.
authors.forename: Shao
authors.initials: S
authors.lastname: Chen
authors.affiliation: School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China.
authors.forename: Pian
authors.initials: P
authors.lastname: Zhang
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
authors.forename: Zilong
authors.initials: Z
authors.lastname: Wang
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
authors.forename: Guankui
authors.initials: G
authors.lastname: Long
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 639798, Singapore.
authors.forename: Rakish
authors.initials: R
authors.lastname: Ganguly
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 639798, Singapore.
authors.forename: Yongxin
authors.initials: Y
authors.lastname: Li
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore. qczhang@ntu.edu.sg.|Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 639798, Singapore. qczhang@ntu.edu.sg.
authors.forename: Qichun
authors.initials: Q
authors.lastname: Zhang
mesh_terms: D000873:Anthracenes / Q000138:chemical synthesis / Q000737:chemistry*; D003124:Colorimetry; D003300:Copper / Q000032:analysis*; D005470:Fluorometry; D007477:Ions / Q000032:analysis; D008958:Models, Molecular; D015394:Molecular Structure; D010084:Oxidation-Reduction; D011719:Pyrazines / Q000138:chemical synthesis* / Q000737:chemistry*
chemical_list: C000611321:3,16,21,24-hex-(triisopropylsilyl)ethynyl)-6,23-dihydro-6,7,14,15,22,23-hexaza-trianthrylene; D000873:Anthracenes; D007477:Ions; D011719:Pyrazines; D003300:Copper
keywords: azaacene; copper ions; oxidation; pyrazine; sensors