SMMR (small molecule metabolite reporters) for use as in vivo glucose biosensors
申请人:Bellott M. Emile
公开号:US20070110672A1
公开(公告)日:2007-05-17
Small Molecule Metabolite Reporters (SMMRs) for use as in vivo glucose biosensors, sensor compositions, and methods of use, are described. The SMMRs include boronic acid-containing xanthene, coumarin, carbostyril and phenalene-based small molecules which are used for monitoring glucose in vivo, advantageously on the skin.
An aqueous polyaromatic tube binds two molecules of fluorescent dyes in water and the bound dye dimers exhibit unusual excimer-like emissions through efficient host–guest energy transfer.
analog have been synthesized and proved as new effective photogenerators of acidity. Having D-π-linker −A conjugated system of push-pull type these compounds possess intensive absorption in visible region of electronicspectra, high photosensitivity and undergo photodehydrogenation with proton elimination in the presence of CCl4 or C2Cl6 with a high speed.
Extensive Reduction in Back Electron Transfer in Twisted Intramolecular Charge-Transfer (TICT) Coumarin-Dye-Sensitized TiO<sub>2</sub>Nanoparticles/Film: A Femtosecond Transient Absorption Study
作者:Tushar Debnath、Partha Maity、Hyacintha Lobo、Balvant Singh、Ganapati S. Shankarling、Hirendra N. Ghosh
DOI:10.1002/chem.201303903
日期:2014.3.17
polarity of the solvent and the solution pH, suggest that both photoexcited dyes exist in a locally excited (LE) state in solvents of low polarity. In highly polarsolvents, however, C1 exists in an intramolecular charge‐transfer (ICT) state, whereas C2 exists in both ICT and twisted intramolecular charge‐transfer (TICT) states, their populations depending on the degree of polarity of the solvent and the pH
我们报告了两种结构相似的香豆素染料(C1和C2)的合成,表征以及光学和电化学性质。这些染料已被用作TiO 2纳米粒子和薄膜中的敏化剂,并且研究了分子结构对界面电子转移动力学的影响。在C1和C2上进行稳态光学吸收,发射和时间分辨发射的研究,改变了溶剂的极性和溶液的pH值,表明这两种光激发染料均在低极性溶剂中以局部激发(LE)状态存在。但是,在高极性溶剂中,C1以分子内电荷转移(ICT)状态存在,而C1以分子内电荷转移(ICT)状态存在。C2以ICT和扭曲的分子内电荷转移(TICT)状态存在,其数量取决于溶剂的极性程度和溶液的pH值。我们采用飞秒瞬态吸收光谱法来监测C1和C2敏化的TiO 2纳米颗粒和薄膜中的电荷转移动力学。通过直接检测TiO 2纳米粒子的导带中的电子以及瞬态吸收光谱的可见光和近红外区域中染料的自由基阳离子,已经证实了电子注入。在C1 / TiO 2和C2 / TiO 2中均进