| DC 欄位 |
值 |
語言 |
| DC.contributor | 化學學系 | zh_TW |
| DC.creator | 廖祥甫 | zh_TW |
| DC.creator | Hsiang-Fu Liao | en_US |
| dc.date.accessioned | 2010-7-26T07:39:07Z | |
| dc.date.available | 2010-7-26T07:39:07Z | |
| dc.date.issued | 2010 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=972203057 | |
| dc.contributor.department | 化學學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 本研究主要以近紫外光光源於流動式樣品槽中光解碘仿 (CHI3)與碘甲烷 (CH3I) 取得放射光譜，並且搭配染料雷射激發其它非放光性物種以取得雷射誘導螢光分光光譜。由放射光譜中光解碘仿可以見到 [CH (A2Δ)、CH (B2Σ-)以及CH (C2Σ+)] 等以及激發態碘原子，而光解碘甲烷只能取得 CH (A2Δ) 光譜及一些尚未釐清的譜帶。而由螢光分光光譜中，光解碘仿及碘甲烷皆可見到碘分子 (I2) 的訊號。但光解可能產生的中間產物亞甲基分子如 CH2 或 CHI 目前都尚未觀測到。從不同雷射功率與訊號強度關係的實驗中，我們可以知道光解碘仿產生之CH (A2Δ) 可能為兩個光子以上的產物，與光解碘甲烷產生CH (A2Δ) 為三個光子或以上的過程不同。但碘分子皆為第一個光子光解後之碘原子碰撞而生成的，然而目前對高激發態碘原子放光形成的原因仍有待釐清。除了利用光譜結果來討論光解碘化甲烷類的光解機制外，同時也可以使用不同波長的雷射 (266 nm，280 nm，310 nm以及 330 nm) 來光解碘化甲烷類分子，藉以觀察在不同波長下的光解機制有何不同，進而確立精確的反應能量圖。
| zh_TW |
| dc.description.abstract | We studied the photolysis reaction of iodoform (CHI3) and iodomethane (CH3I) at various near-ultraviolet wavelengths (266 nm, 280 nm and 310 nm) by using nascent emission spectroscopy and laser-induced dispersed fluorescence spectroscopy in a flow system. Excited species including CH (A2Δ, B2Σ-, and C2Σ+) and atomic iodine were observed in the nascent emission spectrum following the photolysis of CHI3, while only CH (A2Δ) and some unknown bands were seen in the nascent emission spectrum following photolysis of CH3I. Molecular iodine (I2) was discovered in the laser-induced dispersed fluorescence spectrum following the photolysis of CHI3 as well as in that of CH3I, but the possible reaction intermediates such as CHI or CH2 cannot be found. Other experiments such as power dependence, concentration dependence and delay time measurements were carried out to verify the multiphoton photolysis mechanism. Based upon the results, I2 is formed from the collisions of iodine atoms generated from the photolysis at first photon.
| en_US |
| DC.subject | 光譜 | zh_TW |
| DC.subject | 碘仿 | zh_TW |
| DC.subject | 碘甲烷 | zh_TW |
| DC.subject | 近紫外光 | zh_TW |
| DC.subject | 光解 | zh_TW |
| DC.subject | iodoform | en_US |
| DC.subject | photolysis | en_US |
| DC.title | 以近紫外光光解碘仿及相關分子之光譜研究 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | Studied of photolysis reaction of iodoform and relative molecular research | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |