Fast and stable light-driven molecular switch based on a 5a,13-methanoindolo[2,1-b][1,3]benzoxazepine ring system
作者:Greta Ragaitė、Vytas Martynaitis、Vilija Kriščiūnienė、Neringa Kleizienė、Kipras Redeckas、Vladislava Voiciuk、Mikas Vengris、Algirdas Šačkus
DOI:10.1016/j.dyepig.2014.09.006
日期:2015.2
We developed a new type of light-driven molecular switch with ultrafast switching speeds and high fatigue resistance. The aforementioned switch is based on a 5a,13-methanoindolo[2,1-b][1,3]benzoxazepine ring system formed by the treatment of 1′,3′-dihydrospiro[chromene-2,2′-indole] derivatives with strong bases. Laser excitation of the obtained uncoloured molecules of trans- and cis-2-nitro-5a,13-methanoindolo[2
我们开发了一种新型的光驱动分子开关,具有超快的开关速度和较高的抗疲劳性。前述开关基于通过处理1',3'-二氢螺并[chromene-2,2'-吲哚]衍生物形成的5a,13-甲基吲哚并[2,1- b ] [1,3]苯并x氮平环系。有很强的基础。所获得的未着色的分子的激光激发反式-和顺-2-硝基- 5α,13- methanoindolo [2,1- b ] [1,3]苯并氧氮杂诱导C-O键的断裂和双环的开口环系统以纳秒为单位形成有色两性离子物质,其量子产率约为0.1。光生物种吸收在可见光谱的λ最大 = 450–480 nm,并在几纳秒内热回复到基态,使这种光驱动开关成为有机光电开关中最快的开关之一。