Spin-Controlled Approach toward Development of Molecular Functions and Properties for Open-Shell Materials

在本项目中，我们的目标是开发三个课题，其中我们最近发现了有趣的种子：（1）开发基于自由基取代的自由基阳离子的分子磁体，（2）开发涉及分子自旋的强相互作用系统，以及（3）开发利用自由基离子对的自旋选择性形成的高效能量转换系统。(1)我们开发了两种基于自由基取代的自由基阳离子的新磁体。(2)两个中性双自由基具有大的正交换相互作用的开发。合成了一种新的π-给体，它被三个具有双重基态的自由基取代，并被可逆氧化为具有三重基态的双自由基阳离子，其三重基态为：（3）合成了一种新的三元体系，该体系在可见光区具有强吸收。铂卟啉部分的光激发产生了寿命为680 μs的自由基离子对。

In this project, we aim to develop three subjects in which we have recently found interesting seeds:(1) Development of molecular magnets based on radical-substituted radical cations(2) development of strong interaction systems involving molecular spins, and(3) development of highly efficient energy conversion systems utilizing spin-selective formation of radical ion pairs.(1) We developed two new magnets based onradical-substituted radical cations.(2) Two neutral diradicals having large positive exchange interactions were developed. A new π-donor substituted by three radicals with a doublet ground state was prepared and reversibly oxidized to a diradical cation with a triplet ground state havinga l(3) A new triad system with a strong absorption in the visible region due to Pt-porphyrine was prepared. The photoexcitation of the Pt-porphyrine moiety produced the radical ion pair with 680 μs lifetime.