Efficient Room-Temperature Phosphorescence from Discrete Molecules Based on Thianthrene Derivatives for Oxygen Sensing and Detection.
Efficient Room-Temperature Phosphorescence from Discrete Molecules Based on Thianthrene Derivatives for Oxygen Sensing and Detection.
复制标题
基于噻蒽衍生物的离散分子的高效室温磷光用于氧传感和检测
DOI：
10.3389/fchem.2021.810304
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发表时间：
2021
影响因子：
5.5
通讯作者：
Yang B
中科院分区：
文献类型：
--
作者：
Yang Z;Zhao S;Zhang X;Liu M;Liu H;Yang B
本工作采用单苯基修饰的方法合成了两种硫杂菲(TA)衍生物1-苯基硫杂菲(TA1P)和2-苯基硫杂菲(TA2P)，用于纯有机离散分子的室温磷光(RTP)。它们都显示了脱氧后非晶态聚合物基质中的荧光和RTP的双重发射，这是由于折叠诱导的自旋-轨道耦合(SOC)增强的新机制的结果。与TA1P相比，TA2P表现出更高的RTP效率和更大的荧光与RTP光谱分离，这归因于TA在2-位的取代基效应。当氧浓度从1.61%降低到0%时，离散分子TA2P的RTP强度增加了约18倍，荧光强度几乎恒定，这使得TA2P可以在低氧浓度下作为一种自参比光学氧传感探针。对于聚甲基丙烯酸甲酯掺杂的薄膜，TA2P的氧猝灭常数(K SV)估计高达10.22kPA−1，对于Zeonex®掺杂的薄膜，氧猝灭常数甚至高达111.86 kPA−1，在氧气传感和检测方面表现出非常高的灵敏度。本工作为设计高效率的纯有机离散分子RTP材料提供了新的思路，TA衍生物作为新一代光学氧敏材料有望应用于氧的定量检测。
In this work, two thianthrene (TA) derivatives, 1-phenylthianthrene (TA1P) and 2-phenylthianthrene (TA2P), were synthesized with single-phenyl modification for pure organic discrete-molecule room-temperature phosphorescence (RTP). They both show the dual emission of fluorescence and RTP in amorphous polymer matrix after deoxygenation, as a result of a new mechanism of folding-induced spin-orbit coupling (SOC) enhancement. Compared with TA1P, TA2P exhibits a higher RTP efficiency and a larger spectral separation between fluorescence and RTP, which is ascribed to the substituent effect of TA at the 2-position. With decreasing oxygen concentration from 1.61% to 0%, the discrete-molecule TA2P shows an about 18-fold increase in RTP intensity and an almost constant fluorescence intensity, which can make TA2P as a self-reference ratiometric optical oxygen sensing probe at low oxygen concentrations. The oxygen quenching constant (K SV) of TA2P is estimated as high as 10.22 KPa−1 for polymethyl methacrylate (PMMA)-doped film, and even reach up to 111.86 KPa−1 for Zeonex®-doped film, which demonstrates a very high sensitivity in oxygen sensing and detection. This work provides a new idea to design pure organic discrete-molecule RTP materials with high efficiency, and TA derivatives show a potential to be applied in quantitative detection of oxygen as a new-generation optical oxygen-sensing material.
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影响因子：
19
作者：
Borisov, Sergey M.;Vasylevska, Anna S.;Wolfbeis, Otto S.
通讯作者：
Wolfbeis, Otto S.
影响因子：
9.5
作者：
Higginbotham, Heather F.;Okazaki, Masato;Data, Przemyslaw
通讯作者：
Data, Przemyslaw
DOI：
10.3390/molecules26092599
发表时间：
2021-04-29
期刊：
Molecules (Basel, Switzerland)
影响因子：
--
作者：
Mao MX;Li FL;Shen Y;Liu QM;Xing S;Luo XF;Tu ZL;Wu XJ;Zheng YX
通讯作者：
Zheng YX
影响因子：
6.2
作者：
Borisov, Sergey M.;Lehner, Philipp;Klimant, Ingo
通讯作者：
Klimant, Ingo
影响因子：
15
作者：
Lee, Dongwook;Bolton, Onas;Kim, Jinsang
通讯作者：
Kim, Jinsang