Lipophilic 2,1,3-benzothiadiazoles were obtained in a short synthesis with excellent yields by a Sonogashira coupling reaction followed by a 1,3-dipolar cycloaddition reaction with alkyl azides. The obtained compounds presented high solubility in a wide range of solvents with different polarities. The benzothiadiazoles present absorption in the violet region due to fully spin- and symmetry-allowed π-π* electronic tansitions and an emission located in the blue-green region with a large Stokes shift. The high solubility in apolar media, along with their photophysical properties allowed their use as tagging materials up to a detection limit of 0.005 ppm. Moreover, their application as chemosensors for the detection of fuel adulteration in commercial gasoline in the range of 5-50% ethanol/gasoline (v/v) was also sucesfully presented and discussed.

通过Sonogashira偶联反应，然后与叠氮化物进行1,3-偶极环加成反应，可在短时间内以亲和力获得2,1,3-苯并噻二唑类化合物。所获得的化合物在具有不同极性的多种溶剂中显示出高溶解度。苯并噻二唑在紫罗兰色区域中存在吸收，这是由于完全自旋和对称允许的π-π*电子迁移以及位于蓝绿色区域中且斯托克斯位移较大的发射。在非极性介质中的高溶解度以及它们的光物理性质，使其可以用作标签材料，检测限高达0.005 ppm。此外，还成功提出并讨论了它们作为化学传感器的应用，用于检测5-50％乙醇/汽油（v / v）范围内的商用汽油中的燃料掺假。