| 查看: 330 | 回复: 5 | |||
| 当前主题已经存档。 | |||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | |||
wuxuepeng1金虫 (小有名气)
|
[交流]
谢谢 有机翻译
|
||
|
II. Using Fluoro/Lumophores for Signaling: The advantages of molecular fluorescence or lumi- nescence for sensing and switching can be sum- marized;7,8 high sensitivity of detection down to the single molecule,38a,40-44 “on-off” switchability, feasi- bility of human-molecule communication, subnan- ometer spatial resolution with submicron visuali- zation34-38 and submillisecond temporal resolution. Furthermore, many of the structural features which control (reduce) fluorescence efficiency have been delineated;45-51 double-bond torsion, low energy nπ* levels, “heavy” atoms, weak bonds, and opportunities for photoinduced electron transfer (PET) or electronic energy transfer (EET). The importance of extensive delocalization in compensating for these negative effects has also been appreciated. Therefore, consid- erable opportunities exist for modulating these struc- tural features via chemical or physical means at the molecular level. Our emphasis will be on the transduction of discrete and stoichiometric recognition events into fluorescence signals. However, nonstoichiometric interactions such as solvation have much to teach us in this field. In fact, it will become clear that the information gleaned from the fluorescence effects due to nonstoichiomeric interactions is not only important in its own right. Such data can be adapted, some- times rather directly, by designers of molecular and atomic recognition systems. The plan of the review is as follows. First, we consider emissive photophysical effects arising from monofluoro/lumophore components. Additional com- ponents if present will only serve in auxiliary capaci- ties. The supramolecular aspects will mainly arise from the necessary interaction of the environment or guest with the fluoro/lumophore. Most of the prin- cipal types of excited states encountered by organic and inorganic chemists will be represented in sec- tions III-VII. From then on, the photophysical phe- nomena themselves take on a supramolecular char- acter, i.e. two or more components are essential for the phenomenon. Their perturbation by the environ- ment/guest will form the second layer of supramolecu- larity. One of these phenomena, photoinduced elec- tron transfer (PET) can occur in monofluoro/lumophore systems (section VIII). Others require multi- fluorophore assemblies for their operation. Monomer/ excimer equilibria and electronic energy transfer (EET) are taken up in sections IX and X, respectively. |
回复此楼» 猜你喜欢
一志愿郑大0705求调剂
已经有4人回复
-
0703化学
已经有10人回复
-
301求调剂
已经有10人回复
-
306分材料与化工求调剂
已经有6人回复
-
材料调剂
已经有11人回复
-
324求调剂
已经有9人回复
-
材料专硕283求调剂
已经有10人回复
-
材料与化工306分找调剂
已经有13人回复
-
085600，321分求调剂
已经有10人回复
-
0817化学工程与技术求调剂，一志愿中海洋319
已经有8人回复
wuxuepeng1
金虫 (小有名气)
- 应助: 0 (幼儿园)
- 金币: 707.1
- 帖子: 160
- 在线: 8.7小时
- 虫号: 741591
- 注册: 2009-04-06
- 性别: GG
- 专业: 金属有机化学
3楼2009-09-09 17:16:19
wuxuepeng1
金虫 (小有名气)
- 应助: 0 (幼儿园)
- 金币: 707.1
- 帖子: 160
- 在线: 8.7小时
- 虫号: 741591
- 注册: 2009-04-06
- 性别: GG
- 专业: 金属有机化学
2楼2009-09-09 17:15:11
wangjianna
金虫 (正式写手)
- 翻译EPI: 8
- 应助: 0 (幼儿园)
- 金币: 606.5
- 散金: 994
- 红花: 2
- 沙发: 2
- 帖子: 450
- 在线: 163.5小时
- 虫号: 840920
- 注册: 2009-09-05
- 性别: MM
- 专业: 有机合成
5楼2009-09-25 21:08:57
wangjianna
金虫 (正式写手)
- 翻译EPI: 8
- 应助: 0 (幼儿园)
- 金币: 606.5
- 散金: 994
- 红花: 2
- 沙发: 2
- 帖子: 450
- 在线: 163.5小时
- 虫号: 840920
- 注册: 2009-09-05
- 性别: MM
- 专业: 有机合成
6楼2009-09-25 21:14:52
