作者:Yael Abraham、Husein Salman、Kinga Suwinska、Yoav Eichen
DOI:10.1039/c1cc10995b
日期:——
Cyclo[2]benzimidazole is a new host for anions that turns on its luminescence up to 150 fold upon binding. Photoexcited cyclo[2]benzimidazole undergoes an efficient non-radiative deactivation through an excited-state intramolecular proton-transfer (ESIPT) mechanism. Upon binding an anion, the ESIPT pathway is blocked, resulting in an increase in the luminescence efficiency.
环[2]苯并咪唑是阴离子的新宿主,结合后其发光强度最高可提高150倍。光激发的环[2]苯并咪唑通过激发态分子内质子转移(ESIPT)机理经历了有效的非辐射失活。结合阴离子后,ESIPT途径被阻断,导致发光效率增加。