팔라듐은 치과 및 의료용 기구, 의료용 재료, 보석 및 자동차, 고기능성 점 접착제 등을 생산하는데 중요한 역할을 한다. 팔라듐을 이용하는 반응에서의 중요성에도 불구하고 팔라듐은 최종생성물에 잔존할 경우 인체에 해로운 독성을 가지고 있다. 그 중에서도 특히 $PdCl_2$는 독성이 가장 크다. 따라서 $Pd^{2+}$ 이온 검출은 매우 중요한 연구과제인데 그 중에서도 특히 형광분석법은 가장 손쉽고 경제적이면서 감도가 높고 선택성이 높은 방법으로 알려져 있다. 본 연구에서는 알파-카보닐로 치환된 파이렌 유도체인 감마-옥소-1-파이렌부틸산(OPBA)이 수용액에 금속이온으로 감도가 크고 선택성이 우수한 것으로 밝혀졌다.
팔라듐은 치과 및 의료용 기구, 의료용 재료, 보석 및 자동차, 고기능성 점 접착제 등을 생산하는데 중요한 역할을 한다. 팔라듐을 이용하는 반응에서의 중요성에도 불구하고 팔라듐은 최종생성물에 잔존할 경우 인체에 해로운 독성을 가지고 있다. 그 중에서도 특히 $PdCl_2$는 독성이 가장 크다. 따라서 $Pd^{2+}$ 이온 검출은 매우 중요한 연구과제인데 그 중에서도 특히 형광분석법은 가장 손쉽고 경제적이면서 감도가 높고 선택성이 높은 방법으로 알려져 있다. 본 연구에서는 알파-카보닐로 치환된 파이렌 유도체인 감마-옥소-1-파이렌부틸산(OPBA)이 수용액에 금속이온으로 감도가 크고 선택성이 우수한 것으로 밝혀졌다.
Palladium plays a pivotal role in the production of dental and medicinal devices, medicinal substances, jewellery, automobile and high-performance adhesives. Despite the frequent and fruitful use of such reactions, one major setback is the high level of palladium in the resultant compounds which can...
Palladium plays a pivotal role in the production of dental and medicinal devices, medicinal substances, jewellery, automobile and high-performance adhesives. Despite the frequent and fruitful use of such reactions, one major setback is the high level of palladium in the resultant compounds which can harm the human body. Among the palladium species, $PdCl_2$ is the most toxic. As a consequence it is desirable to detect the $Pd^{2+}$ cations by fluorescence spectra because it can provide an operationally simple and cost-effective detection method together with high sensitivity and selectivity. Herein, an ${\alpha}$-carbonyl substituted pyrene derivative, ${\gamma}$-oxo-1-pyrenebutyric acid (OPBA), was demonstrated to be a highly sensitive and selective fluorescent probe for $Pd^{2+}$ among the metal cations examined in aqueous solutions.
Palladium plays a pivotal role in the production of dental and medicinal devices, medicinal substances, jewellery, automobile and high-performance adhesives. Despite the frequent and fruitful use of such reactions, one major setback is the high level of palladium in the resultant compounds which can harm the human body. Among the palladium species, $PdCl_2$ is the most toxic. As a consequence it is desirable to detect the $Pd^{2+}$ cations by fluorescence spectra because it can provide an operationally simple and cost-effective detection method together with high sensitivity and selectivity. Herein, an ${\alpha}$-carbonyl substituted pyrene derivative, ${\gamma}$-oxo-1-pyrenebutyric acid (OPBA), was demonstrated to be a highly sensitive and selective fluorescent probe for $Pd^{2+}$ among the metal cations examined in aqueous solutions.
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제안 방법
The study performed pH titration of OPBA to investigate a suitable pH range for Pd2+ sensing. As depicted in Figure 9, after mixing OPBA with Pd2+, the emission intensity at 455 nm decreased between pH 2.
of Cu2+ and Pb2+ did not induce the changes on the fluorescence emission of OPBA at 455 nm[30], thus, OPBA cannot be used as the probes for the detection of metal cations of Cu2+ and Pb2+. To further investigate the selectivity for Pd2+ ions over other metal ions, interferences to the selective response of receptor OPBA to Pd2+ by coexisting ions were evaluated; no significant interference in detection of Pd2+ was observed in the presence of other competitive cations. These results suggested that OPBA can be used as a potential chemosensor for the Pd2+ ions
성능/효과
In conclusion, γ-oxo-1-pyrenebutyric acid (OPBA) showed highly selective on-off fluorescence changes for Pd2+ among the other investigated metal cations.
후속연구
We hope that the efforts made in this work will contribute to the development of metal chemosensors based on α-carbonyl substituted pyrene derivatives.
참고문헌 (33)
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