Spectroscopic studies of inverted singlet triplet molecules

我们将详细研究有机晶体中的超快激子和电荷转移态动力学，这些晶体中的分子之间具有零库仑耦合。这些材料形成了一个新的有机物子集，这个项目将产生重要的信息。包括超快时间相关的单光子计数荧光寿命测量技术将沿着飞秒光致吸收。三重激发态将使用纳秒时间选通测量进行研究。这些高度各向异性晶体的偏振发射研究也将进行。作为这些材料的子集，将检查据报道显示负单重态三重态能隙的分子。

We shall study details ultrafast exciton and charge transfer state dynamics in organic crystals which have zero Coulomb coupling between molecules in the crystal stacks. These materials form a new sub set of organic matter and this project will yield important information. Techniques including ultrafast time correlated single photo counting fluorescence lifetime measurements will be made along with femtosecond photoinduced absorption. Triplet excited states will be investigated using nanosecond time gated measurements. Polarised emission studies of these highly anisotropic crystals will also be made. As a sub set of these materials, molecules reportedly showing negative singlet triplet gap will be examined.