Department of Chemistry, Annamalai University, Annamalainagar, Tamilnadu, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Jun;79(1):236-44. doi: 10.1016/j.saa.2011.02.049. Epub 2011 Mar 5.
Novel donor imidazole derivative, 2-(1-phenyl-1H-imidazo [4,5-f][1,10]phenanthrolin-2-yl)-phenol (PIPP) was screened as highly sensitive chemisensor for transition metal ions and it can be used as a "multi-way" optically switchable material. Solvatochromic effects on the fluorescence behaviour of PIPP were studied in different solvents. The fluorescence of PIPP was highly sensitive to both the polarity as well as protic nature of the solvent. Fluorescence (Forster) resonance energy transfer (FRET) process from PIPP to a potent bioactive indoloquinolizine molecule was studied and it is argued that long-range dipole-dipole interaction is operating for the energy transfer mechanism. The energy transfer efficiency (E) and the distance between the acceptor and the donor (r(0)) have been determined.
新型供体咪唑衍生物 2-(1-苯基-1H-咪唑并[4,5-f][1,10]菲咯啉-2-基)-苯酚(PIPP)被筛选为高灵敏度的过渡金属离子化学传感器，并且可用作“多向”光开关材料。研究了 PIPP 在不同溶剂中的荧光行为的溶剂化效应。PIPP 的荧光对溶剂的极性和质子性质都非常敏感。研究了 PIPP 到有效生物活性吲哚喹啉分子的荧光（福斯特）共振能量转移（FRET）过程，并且认为长程偶极-偶极相互作用对于能量转移机制起作用。已经确定了能量转移效率（E）和受体与供体之间的距离（r(0)）。
