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철 알킨일카르벤 착물 유도체의 합성과 열린 사슬 1,3-디엔에 대한 반응성 연구
박재욱,강선화,황동목,김기문,Park Jaiwook,Kang Sunhwa,Whang Dongmok,Kim Kimoon 대한화학회 1992 대한화학회지 Vol.36 No.5
$Fe(CO)_5와 알킨일리튬의 반응에서 생성된 아실 음이온 착물을 CH_3CH_2OSO_2F로 처리하는 방법으로 5종의 철 알킨일카르벤 착물 유도체(1)들을 합성하였다. [R-C≡C-C(OCH_2CH_3)]Fe(CO)_4(R = n-프로필, 시클로헥실, t-부틸, 트리메틸실릴, 페닐). 트리메틸시릴기가 치환된 유도체(1d)와 8종의 열린 고리 1,3-디엔과의 반응에서 {\eta}^3-비닐카르벤 착물 유도체(2)를 주생성물로 얻었다.$ Five (alkynylethoxymethylene)$Fe(CO)_4 complexes (1) are prepared through the reaction of Fe(CO)_5$ with alkynyllithium (R = n-Pr, cyclohexyl, t-Bu, trimethylsilyl, Ph) and subsequent O-ethylation of the resulting acyl anion complexes with ethyl fluorosulfonate. In the reactions of trimethylsilyl-substituted alkynylcarbene complex (1d) with 8 open-chain 1,3-dienes, ({\eta}^3-vinylcarbene)Fe(CO)3 complexes (2) are obtained as major products.
Amperometric Glucose Biosensor Based on a Pt-Dispersed Hierarchically Porous Electrode
송민정,황성우,황동목 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.54 No.4
A high-performance electrochemical biosensor for the detection of glucose was developed using a Pt-dispersed polyaniline (PANI) nanorod electrode with a hierarchical porous surface. PANI nanorods were synthesized directly on an Au-coated porous silicon electrode and high-density Pt nanoparticles were dispersed on the PANI nanorods by electrochemical deposition. The electrode surface's structure exhibited order on multiple length scales from ~30-nm Pt nanoparticle to 200- nm diameter PANI nanorod to micrometer pore size's for the porous silicon. The sensitivity of the Pt-dispersed PANI nanorod electrode with a hierarchical porous surface was 35.64 μA/mM, which corresponds to a 22.1-fold larger value than that of the planar Au/PANI nanorod electrode. The glucose biosensor with a Pt-dispersed highly porous electrode exhibited a short response time (<10 s) and a linear response in the range from 9×10-6 to 5× 10-3 M. The sensor also showed long-term stability; the sensing response measured under the same conditions retained 80 % of the initial value after a 45-day storage. The high performances of the novel glucose sensor are mainly attributed to the hierarchical porous electrode structure, which provides an increased sensing area and effective mass transportation pathway.