Organic pigments ua haujlwm li cas?

Organic pigments yog ib chav kawm ntawm cov xim sib txuas uas muaj cov pa roj carbon atoms hauv lawv cov qauv molecular. Lawv tau siv dav hauv ntau daim ntawv thov xws li number case, xim, tshuaj pleev ib ce, thiab textiles. Tab sis yuav ua li cas cov organic pigments ua haujlwm los tsim cov xim zoo li no?
Txhawm rau kom nkag siab txog kev ua haujlwm ntawm cov organic pigments, peb yuav tsum xub nkag siab txog lub hauv paus ntsiab lus ntawm kev nkag siab xim, uas yog raws li kev nqus thiab kev xav ntawm lub teeb. Thaum lub teeb dawb poob rau ntawm ib qho khoom, nws cuam tshuam nrog atoms thiab molecules ntawm cov khoom ntawd, uas tuaj yeem nqus tau qee qhov wavelengths ntawm lub teeb thiab cuam tshuam lwm tus. Cov xim uas peb pom yog qhov tshwm sim ntawm lub teeb pom kev zoo uas nkag mus rau peb lub qhov muag.
Organic pigments ua haujlwm los ntawm kev xaiv absorbing thiab xav txog tej yam wavelengths ntawm lub teeb. Lawv yog tsim los ntawm complex organic molecules uas muaj ntau yam conjugated ob daim ntawv cog lus thiab kev ua haujlwm pab pawg uas muaj lub luag haujlwm rau kev nqus thiab kev xav ntawm lub teeb. Cov molecules no muaj cov qauv hluav taws xob tshwj xeeb uas tso cai rau lawv nqus lub teeb ntawm qee qhov wavelengths, uas muab lawv cov xim tshwj xeeb.
Organic pigments feem ntau yog cais raws li lawv cov chromophores, uas yog cov khoom ntawm cov molecule lub luag haujlwm rau lub teeb nqus. Piv txwv li, phthalocyanine pigments muaj lub hauv paus hlau atom ncig los ntawm nitrogen atoms, uas tsim ib tug loj chromophore uas absorbs lub teeb nyob rau hauv lub xiav thiab ntsuab cheeb tsam ntawm lub spectrum. Ntawm qhov tod tes, quinacridone pigments muaj ib tug me me chromophore uas absorbs lub teeb nyob rau hauv lub liab thiab violet cheeb tsam ntawm lub spectrum.
Piv nrog rau cov pigments inorganic, organic pigments muaj ntau yam zoo. Lawv feem ntau yog khaus ntau dua thiab muaj lub ntsej muag zoo dua, tsim kom muaj xim zoo nkauj thiab ntxim nyiam. Lawv kuj tseem tiv taus fading, tshwj xeeb tshaj yog thaum raug tshav ntuj. Txawm li cas los xij, cov pigments organic yuav muaj qis dua lub zog, uas txhais tau hais tias yuav tsum muaj cov xim ntau dua kom ua tiav cov xim xav tau.
Hauv cov ntsiab lus, cov organic pigments ua haujlwm los ntawm kev xaiv absorbing thiab xav txog qee qhov wavelengths ntawm lub teeb, uas ua rau muaj ntau yam xim uas peb pom. Cov xim no muaj cov qauv molecular uas muaj cov chromophores tshwj xeeb uas ua rau lub teeb haum. Organic pigments muaj ntau yam zoo dua lawv cov inorganic counterparts, xws li kev siv zog thiab tsis kam mus rau fading, txawm hais tias lawv yuav muaj qis dua lub hwj chim.