Thermochemically Stable Liquid-Crystalline Gold(I) Complexes Showing Enhanced Room Temperature Phosphorescence
Gold(I) complexes are some of the most attractive materials for generating aggregation-induced emission (AIE), enabling the realization of novel light-emitting applications such as chemo-sensors, bio-sensors, cell imaging, and organic light-emitting diodes (OLEDs). In this study, we propose a ration...
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MDPI AG
2019-04-01
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| Online Access: | https://www.mdpi.com/2073-4352/9/5/227 |
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| author | Yuki Kuroda Shin-ya Nakamura Katam Srinivas Arruri Sathyanarayana Ganesan Prabusankar Kyohei Hisano Osamu Tsutsumi |
| author_facet | Yuki Kuroda Shin-ya Nakamura Katam Srinivas Arruri Sathyanarayana Ganesan Prabusankar Kyohei Hisano Osamu Tsutsumi |
| author_sort | Yuki Kuroda |
| collection | DOAJ |
| description | Gold(I) complexes are some of the most attractive materials for generating aggregation-induced emission (AIE), enabling the realization of novel light-emitting applications such as chemo-sensors, bio-sensors, cell imaging, and organic light-emitting diodes (OLEDs). In this study, we propose a rational design of luminescent gold complexes to achieve both high thermochemical stability and intense room temperature phosphorescence, which are desirable features in practical luminescent applications. Here, a series of gold(I) complexes with ligands of <i>N</i>-heterocyclic carbene (NHC) derivatives and/or acetylide were synthesized. Detailed characterization revealed that the incorporation of NHC ligands could increase the molecular thermochemical stability, as the decomposition temperature was increased to ~300 °C. We demonstrate that incorporation of both NHC and acetylide ligands enables us to generate gold(I) complexes exhibiting both high thermochemical stability and high room-temperature phosphorescence quantum yield (>40%) under ambient conditions. Furthermore, we modified the length of alkoxy chains at ligands, and succeeded in synthesizing a liquid crystalline gold(I) complex while maintaining the relatively high thermochemical stability and quantum yield. |
| first_indexed | 2024-12-10T06:54:40Z |
| format | Article |
| id | doaj.art-04eb4676298c42838c4de7ab828219b5 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-12-10T06:54:40Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-04eb4676298c42838c4de7ab828219b52022-12-22T01:58:28ZengMDPI AGCrystals2073-43522019-04-019522710.3390/cryst9050227cryst9050227Thermochemically Stable Liquid-Crystalline Gold(I) Complexes Showing Enhanced Room Temperature PhosphorescenceYuki Kuroda0Shin-ya Nakamura1Katam Srinivas2Arruri Sathyanarayana3Ganesan Prabusankar4Kyohei Hisano5Osamu Tsutsumi6Department of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu 525-8577, JapanDepartment of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu 525-8577, JapanDepartment of Chemistry, Indian Institute of Technology, Kandi, Sangareddy TS 502285, IndiaDepartment of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu 525-8577, JapanDepartment of Chemistry, Indian Institute of Technology, Kandi, Sangareddy TS 502285, IndiaDepartment of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu 525-8577, JapanDepartment of Applied Chemistry, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu 525-8577, JapanGold(I) complexes are some of the most attractive materials for generating aggregation-induced emission (AIE), enabling the realization of novel light-emitting applications such as chemo-sensors, bio-sensors, cell imaging, and organic light-emitting diodes (OLEDs). In this study, we propose a rational design of luminescent gold complexes to achieve both high thermochemical stability and intense room temperature phosphorescence, which are desirable features in practical luminescent applications. Here, a series of gold(I) complexes with ligands of <i>N</i>-heterocyclic carbene (NHC) derivatives and/or acetylide were synthesized. Detailed characterization revealed that the incorporation of NHC ligands could increase the molecular thermochemical stability, as the decomposition temperature was increased to ~300 °C. We demonstrate that incorporation of both NHC and acetylide ligands enables us to generate gold(I) complexes exhibiting both high thermochemical stability and high room-temperature phosphorescence quantum yield (>40%) under ambient conditions. Furthermore, we modified the length of alkoxy chains at ligands, and succeeded in synthesizing a liquid crystalline gold(I) complex while maintaining the relatively high thermochemical stability and quantum yield.https://www.mdpi.com/2073-4352/9/5/227aggregation-induced emissionroom-temperature phosphorescencegold(I) complex<i>N</i>-heterocyclic carbeneacetylideliquid crystal |
| spellingShingle | Yuki Kuroda Shin-ya Nakamura Katam Srinivas Arruri Sathyanarayana Ganesan Prabusankar Kyohei Hisano Osamu Tsutsumi Thermochemically Stable Liquid-Crystalline Gold(I) Complexes Showing Enhanced Room Temperature Phosphorescence Crystals aggregation-induced emission room-temperature phosphorescence gold(I) complex <i>N</i>-heterocyclic carbene acetylide liquid crystal |
| title | Thermochemically Stable Liquid-Crystalline Gold(I) Complexes Showing Enhanced Room Temperature Phosphorescence |
| title_full | Thermochemically Stable Liquid-Crystalline Gold(I) Complexes Showing Enhanced Room Temperature Phosphorescence |
| title_fullStr | Thermochemically Stable Liquid-Crystalline Gold(I) Complexes Showing Enhanced Room Temperature Phosphorescence |
| title_full_unstemmed | Thermochemically Stable Liquid-Crystalline Gold(I) Complexes Showing Enhanced Room Temperature Phosphorescence |
| title_short | Thermochemically Stable Liquid-Crystalline Gold(I) Complexes Showing Enhanced Room Temperature Phosphorescence |
| title_sort | thermochemically stable liquid crystalline gold i complexes showing enhanced room temperature phosphorescence |
| topic | aggregation-induced emission room-temperature phosphorescence gold(I) complex <i>N</i>-heterocyclic carbene acetylide liquid crystal |
| url | https://www.mdpi.com/2073-4352/9/5/227 |
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