| 词条 | Camphorquinone |
| 释义 |
| ImageFile = Camphorquinone structure.svg | ImageSize = 150px | ImageAlt = Structure of camphorquinone | IUPACName = 2,6-Bornanedione | OtherNames = Camphorquinone 6-Oxocamphor CQ CPQ | Section1 = {{Chembox Identifiers | CASNo = 10373-78-1 | PubChem = 25208 | SMILES = CC1(C2CCC1(C(=O)C2=O)C)C | Section2 = {{Chembox Properties | C=10|H=14|O=2 | Appearance = | Density = | MeltingPt = 197-203 | BoilingPt = | Solubility = | Section3 = {{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = }}Camphorquinone, also known as 2,3-bornanedione, is a photoinitiator used in curing dental composites.[1] Polymerization is induced very slowly by camphorquinone, so amines such as N,N-dimethyl-p-toluidine, 2-ethyl-dimethylbenzoate, N-phenylglycine are generally added to increase the rate of curing.[1] It absorbs very weakly at 468 nm (extinction coefficient of 40 M-1·cm-1) giving it a pale yellow color.[1] Photoexcitation results in nearly quantitative formation of its triplet state through intersystem crossing and very faint fluorescence.[2] It can be hydrolyzed by the enzyme 6-oxocamphor hydrolase. References1. ^1 2 {{cite journal |last1=Jakubiak |first1=J. |last2=Allonas |first2=X. |last3=Fouassier |first3=J.P. |last4=Sionkowska |first4=A. |last5=Andrzejewska |first5=E. |last6=Linden |first6=L.Å. |last7=Rabek |first7=J.F. |title=Camphorquinone–amines photoinitating systems for the initiation of free radical polymerization |journal=Polymer |date=August 2003 |volume=44 |issue=18 |pages=5219–5226 |doi=10.1016/S0032-3861(03)00568-8}} 2. ^{{cite journal |last1=Allonas |first1=Xavier |last2=Fouassier |first2=Jean-Pierre |last3=Angiolini |first3=Luigi |last4=Caretti |first4=Daniele |title=Excited-State Properties of Camphorquinone Based Monomeric and Polymeric Photoinitiators |journal=Helvetica Chimica Acta |date=19 September 2001 |volume=84 |issue=9 |pages=2577 |doi=10.1002/1522-2675(20010919)84:9%3C2577::AID-HLCA2577%3E3.0.CO;2-Q}} 3 : Ketones|Polycyclic nonaromatic hydrocarbons|Monoterpenes |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。