Demonstration of bidirectional photoinduced electron transfer (PET) sensing in 4-amino-1,8-naphthalimide based thiourea anion sensors
作者:Emma B. Veale、Gillian M. Tocci、Frederick M. Pfeffer、Paul E. Kruger、Thorfinnur Gunnlaugsson
DOI:10.1039/b907037k
日期:——
as fluorescent anion sensors and their photophysical properties investigated upon recognition of biologically relevant anions such as acetate, dihydrogen phosphate and fluoride in DMSO. Synthesised in a single step from their respective aniline precursors, 6–9, these molecules were designed on the fluorophore–spacer–receptor principle, where in the case of sensors 1–3 the thiourea anion recognition moieties
这 硫脲基于4-氨基-1,8-萘二甲酰亚胺的分子1–5被设计为荧光阴离子传感器,并在识别与生物有关的阴离子(例如乙酸根,磷酸二氢根和氟离子)后对其光物理性质进行了研究。二甲基亚砜。从各自的步骤中一步一步合成苯胺前体6–9,这些分子是根据荧光团-间隔基-受体原理设计的,在传感器1-3的情况下,硫脲阴离子识别部分通过4-氨基部分与荧光团相连,而传感器4和5具有通过CH 2间隔基连接到“酰亚胺”的硫脲部分。目前的研究表明,1-5操作为光诱导电子转移(PET)的传感器,如在它们的吸收光谱中没有观察到显著变化,而它们的荧光发射被在识别离子如ACO淬灭-,H2 PO 4 -和F - ,这表明双向PET感测在这样的基于萘二甲酰亚胺阴离子传感器发生。