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Photophysical Properties and Electrochromism of Viologen Encapsulated Viologen@InBTB Metal–Organic Framework
Bulletin of the Korean Chemical Society ( IF 2.3 ) Pub Date : 2020-12-28 , DOI: 10.1002/bkcs.12192 Sukbin Yoon 1 , Hyun‐Chul Kim 1 , Youngmee Kim 2 , Seong Huh 1
Bulletin of the Korean Chemical Society ( IF 2.3 ) Pub Date : 2020-12-28 , DOI: 10.1002/bkcs.12192 Sukbin Yoon 1 , Hyun‐Chul Kim 1 , Youngmee Kim 2 , Seong Huh 1
Affiliation
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The encapsulation of various types of guest molecules into the preorganized channels of metal–organic frameworks (MOFs) is continuously motivating chemists searching for better MOF host materials to systematically alter or control the photophysical properties of the captured guests in a controlled manner. The unique spatial distribution and a certain preferential geometry of the guests inside MOFs often render guests to exhibit distinct optical properties. Three different viologen cations were encapsulated into the mesoscale channels of negatively charged InBTB MOF ([Et2NH2]3[In3(BTB)4]·10DEF·14H2O, H3BTB = 1,3,5‐benzenetribenzoic acid) via cation exchange process. The cationic viologens were partially encapsulated through cation exchange with [Et2NH2]+ counter‐cations to afford viologen@InBTB. The colorless InBTB crystals changed into yellow in the case of viologen@InBTB. The fluorescence measurement of methylviologen (MV2+) encapsulated MV@InBTB showed different behavior compared to ethylviologen (EV2+) and benzylviologen (BV2+) encapsulated InBTB. Both EV@InBTB and BV@InBTB exhibited unusual quenching of the photoluminescence emission in solid state.
中文翻译：
Viologen封装的Viologen @ InBTB金属有机框架的光物理性质和电致变色
将各种类型的客体分子封装到金属有机框架（MOF）的预组织通道中，一直在促使化学家寻找更好的MOF宿主材料，以受控方式系统地改变或控制被捕获客体的光物理性质。MOF内部来宾的独特空间分布和某些优先的几何形状通常使来宾呈现出独特的光学特性。三种不同的紫罗兰色阳离子封装在带负电荷的InBTB MOF（[Et 2 NH 2 ] 3 [In 3（BTB）4 ]·10DEF·14H 2 O，H 3通过阳离子交换过程获得的BTB = 1,3,5-苯三苯甲酸）。阳离子紫精部分通过与[Et 2 NH 2 ] +抗衡阳离子的阳离子交换而部分包封，以提供viologen @ InBTB。在viologen @ InBTB的情况下，无色InBTB晶体变为黄色。与甲基紫胶（EV 2+）和苄基紫胶（BV 2+）封装的InBTB相比，甲基紫胶（MV 2+）封装的MV @ InBTB的荧光测量显示出不同的行为。EV @ InBTB和BV @ InBTB均表现出固态光致发光发射的异常猝灭。
更新日期：2021-02-24
中文翻译：
Viologen封装的Viologen @ InBTB金属有机框架的光物理性质和电致变色
将各种类型的客体分子封装到金属有机框架（MOF）的预组织通道中，一直在促使化学家寻找更好的MOF宿主材料，以受控方式系统地改变或控制被捕获客体的光物理性质。MOF内部来宾的独特空间分布和某些优先的几何形状通常使来宾呈现出独特的光学特性。三种不同的紫罗兰色阳离子封装在带负电荷的InBTB MOF（[Et 2 NH 2 ] 3 [In 3（BTB）4 ]·10DEF·14H 2 O，H 3通过阳离子交换过程获得的BTB = 1,3,5-苯三苯甲酸）。阳离子紫精部分通过与[Et 2 NH 2 ] +抗衡阳离子的阳离子交换而部分包封，以提供viologen @ InBTB。在viologen @ InBTB的情况下，无色InBTB晶体变为黄色。与甲基紫胶（EV 2+）和苄基紫胶（BV 2+）封装的InBTB相比，甲基紫胶（MV 2+）封装的MV @ InBTB的荧光测量显示出不同的行为。EV @ InBTB和BV @ InBTB均表现出固态光致发光发射的异常猝灭。
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