A class of dithienylethene-containing boron(III) diketonates with long alkoxy chains, together with their corresponding β-diketone ligands, has been prepared and characterized. The photophysics, electrochemistry, and photochromism of the compounds have been investigated. Some of them exhibit gelation behavior, which has been explored by variable-temperature UV–vis absorption studies, and the morphology
An upconverting nanoparticle probe can be switched on and off by near-infrared (NIR) light for multiple cycles of photoacousticimaging (PA). Through reversible modulation of the probe PA activation state, a background-free PA signal can be recovered in imaging 0.05 nM of the probe in hemoglobin (Hb) solution and 104 labeled cancer cells subcutaneously implanted in mice.
上转换纳米粒子探针可以通过近红外 (NIR) 光打开和关闭,用于光声成像 (PA) 的多个循环。通过探针 PA 激活状态的可逆调制,可以在对血红蛋白 (Hb) 溶液中的 0.05 nM 探针和皮下植入小鼠皮下的 10 4标记癌细胞进行成像时恢复无背景 PA 信号。