Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 채필석 | - |
dc.date.accessioned | 2022-10-31T00:49:20Z | - |
dc.date.available | 2022-10-31T00:49:20Z | - |
dc.date.issued | 2017-12 | - |
dc.identifier.citation | Dyes and Pigments, v. 147, Page. 400-412 | en_US |
dc.identifier.issn | 0143-7208;1873-3743 | en_US |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S0143720817317138?via%3Dihub | en_US |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/176111 | - |
dc.description.abstract | Pyrene-appended dipodal probes (probes 1 and 2) with differences in conformational rigidity were synthesized for sensitive detection of 3,5-dinitrosalicylic acid (DNSA) in an aqueous solution. Both dipodal probes had two pyrene units and exhibited quenching caused by aggregation (ACQ) at high water content (>60%) in DMSO. As the pyrene dimer (e.g., excimer) was a dominant conformation in 99% aqueous solution, both probes showed sufficient excimer emission intensity at 486 nm (probe 1) or 480 nm (probe 2) upon excitation. The excimer emission of the probes (probes 1 and 2) was sensitively quenched in the presence of DNSA. Probe 1 selectively responded to DNSA among various carboxylic acids (CAs), while probe 2 was responsive to both DNSA and 5-NSA. Density functional theory (DFT) calculations suggest that, in the presence of DNSA, the probes undergo structural changes, leading to formation of new pi-pi interactions between each pyrene unit of the probe and the benzene ring of the guest molecule. This new pi-pi interaction enabled energy transfer from pyrene to the non-radiative guest molecule (DNSA), resulting in fluorescence quenching in the probes. The limit of detection (LOD) of probe 1 with DNSA was observed to be 1 nM, the lowest value reported so far. This ultra sensitivity toward DNSA detection was retained even in the case of a probe 1-coated TLC strip. Probe 3, which had only one pyrene unit, gave produced a monomeric emission spectrum with lambda(max) = 406 nm, along with aggregation-induced emission enhancement (AIEE) behavior. The interactions of DNSA with individual probes were examined by UV-visible, fluorescence, and H-1 NMR spectroscopies and were further supported by DFT calculations. (C) 2017 Published by Elsevier Ltd. | en_US |
dc.description.sponsorship | This work was supported by the National Research Foundation of Korea funded by the Korean government (MSIP) (grant number 2008-0061891 to P.S.C. and A.K.). | en_US |
dc.language | en | en_US |
dc.publisher | Elsevier BV | en_US |
dc.subject | Pyreneamide | en_US |
dc.subject | Excimer emission | en_US |
dc.subject | DNSA | en_US |
dc.subject | Fluorescence quenching | en_US |
dc.title | Pyreneamide-based dipodal probes for ultra-sensitive and selective detection of 3,5-dinitrosalicylic acid in an aqueous solution | en_US |
dc.type | Article | en_US |
dc.relation.volume | 147 | - |
dc.identifier.doi | 10.1016/j.dyepig.2017.08.039 | en_US |
dc.relation.page | 400-412 | - |
dc.relation.journal | Dyes and Pigments | - |
dc.contributor.googleauthor | Kumar, Ashwani | - |
dc.contributor.googleauthor | Chae, Pil Seok | - |
dc.sector.campus | E | - |
dc.sector.daehak | 공학대학 | - |
dc.sector.department | 생명나노공학과 | - |
dc.identifier.pid | pchae | - |
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