申请人:Akita Innovations LLC
公开号:US11332484B2
公开(公告)日:2022-05-17
Voltage sensitive dyes comprising boron and related compositions and methods are provided. In some embodiments, a voltage sensitive dye comprises an electron acceptor comprising boron. The electron acceptor may be attached (e.g., covalently) to at least one electron donating group and at least one polar group. For instance, the electron acceptor may comprise optionally substituted boron dipyrromethene (e.g., optionally substituted 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene). The point of attachment and chemical nature of the electron donating group(s) and polar group(s) may be selected to impart beneficial properties to the voltage sensitive dye. For instance, the voltage sensitive dye may have an extended difference in the dipole moment between the ground and electronic states due at least in part to the position of the electron donating group(s). The voltage sensitive dyes, described herein, may have high specificity, high signal to noise ratio, fast responsivity, high voltage sensitivity, high photostability, and/or high brightness.
本文提供了包含硼的电压敏感染料以及相关的组合物和方法。在某些实施方案中,电压敏感染料包含由硼组成的电子受体。电子受体可与至少一个电子捐赠基团和至少一个极性基团连接(例如共价连接)。例如,电子受体可包括任选取代的硼二吡咯并烯(如任选取代的 4,4-二氟-4-硼-3a,4a-二氮杂-s-茚)。可选择电子捐赠基团和极性基团的附着点和化学性质,以赋予电压敏感染料有益的特性。例如,电压敏感染料在基态和电子态之间的偶极矩差可以扩大,这至少部分归因于电子捐赠基团的位置。本文所述的电压敏感染料可具有高特异性、高信噪比、快速响应性、高电压敏感性、高光稳定性和/或高亮度。