Qhov sib txawv tseem ceeb ntawm kev sib hloov thiab kev vibrational spectroscopy yog qhov kev sib hloov spectroscopy yog siv los ntsuas lub zog ntawm cov kev hloov pauv uas tshwm sim ntawm qhov sib txawv ntawm cov molecules hauv cov roj theem, qhov vibrational spectroscopy yog siv los ntsuas qhov kev cuam tshuam ntawm IR hluav taws xob nrog teeb meem los ntawm kev nqus, emission, lossis kev xav.
Spectroscopy yog ib ceg ntawm kev tshawb fawb uas cuam tshuam txog kev tshawb nrhiav thiab ntsuas cov spectra uas tsim thaum muaj teeb meem cuam tshuam nrog lossis tawm hluav taws xob hluav taws xob. Qhov kev sib cuam tshuam no tshwm sim los ntawm kev hloov hluav taws xob. Kev hloov hluav taws xob hauv cov molecules tshwm sim thaum electrons hauv cov molecule ua kev zoo siab los ntawm ib qib zog mus rau lwm qhov. Cov electrons zoo li txav los ntawm qib qis zog mus rau qib siab zog. Kev hloov pauv ntawm lub zog uas cuam tshuam nrog qhov kev hloov pauv no muab cov ntaub ntawv hais txog cov qauv ntawm cov molecule thiab pab txiav txim siab cov khoom molecular xws li xim. Kev sib raug zoo ntawm lub zog thiab qhov zaus ntawm cov hluav taws xob uas siv rau hauv txoj kev hloov pauv tuaj yeem muab los ntawm Planck txoj kev sib raug zoo.
Kev Sib Tw Spectroscopy yog dab tsi?
Rotational spectroscopy yog qhov ntsuas ntawm lub zog ntawm cov kev hloov pauv uas tshwm sim ntawm qhov ntsuas qhov sib hloov ntawm cov molecules hauv theem roj. Qee zaum, txoj kev no yog hu ua ntshiab rotational spectroscopy. Qhov no yog vim nws pab kom paub qhov txawv ntawm kev sib hloov spectroscopy los ntawm rotational-vibrational spectroscopy. Kev sib hloov spectroscopy yog tswj hwm los ntawm kev hloov pauv.
Daim duab 01: Kev Sib Tw Sib Tham
Kev hloov pauv ntawm cov molecules hais txog qhov hloov pauv sai sai hauv lub zog ntawm lub zog ntawm cov molecule. Qhov kev txhais no yog muab nyob ntawm qhov kev xav ntawm quantum physics, uas hais tias lub zog ntawm lub zog ntawm lub molecule yog ib qho khoom muaj nuj nqis, thiab nws tsuas muaj peev xwm sib npaug qee qhov txiaj ntsig sib txawv uas sib txawv ntawm lub zog sib txawv. Kev hloov pauv hloov yog hais txog qhov poob lossis nce ntawm lub zog ntawm lub zog, uas ua rau cov molecule txav mus rau qhov siab dua lossis qis dua lub zog hloov pauv.
Vibrational Spectroscopy yog dab tsi?
Vibrational spectroscopy yog qhov ntsuas ntawm kev cuam tshuam ntawm IR hluav taws xob nrog teeb meem los ntawm kev nqus, emission, lossis kev xav. Cov txheej txheem spectroscopic no muaj txiaj ntsig zoo hauv kev kawm thiab txheeb xyuas cov tshuaj lom neeg lossis pab pawg ua haujlwm hauv cov khoom, roj lossis kua sib txuas. Vibrational spectroscopy yog tswj hwm los ntawm kev vibrational hloov.
Daim duab 02: Ib qho kev vibrational Spectrum
Txoj kev hloov pauv ntawm lub molecule yog hais txog kev txav ntawm cov molecule los ntawm ib qib kev vibrational mus rau lwm qhov. Peb kuj tuaj yeem hu nws qhov kev hloov pauv vibronic. Hom kev hloov no tshwm sim nyob rau ntawm qhov sib txawv vibrational theem ntawm tib lub xeev hluav taws xob. Txhawm rau ntsuas qhov kev hloov pauv ntawm kev hloov pauv ntawm ib qho molecule, peb yuav tsum paub qhov kev vam khom ntawm cov molecule-taw Cheebtsam ntawm lub sijhawm hluav taws xob dipole ntawm cov molecular deformations. Feem ntau, Raman spectroscopy yog raws li kev vibrational hloov.
Dab tsi yog qhov txawv ntawm Kev Sib Hloov thiab Kev Vibrational Spectroscopy?
Kev sib hloov spectroscopy thiab vibrational spectroscopy yog tswj hwm los ntawm kev hloov hluav taws xob. Qhov sib txawv tseem ceeb ntawm kev sib hloov thiab kev vibrational spectroscopy yog qhov kev sib hloov spectroscopy yog qhov muaj txiaj ntsig los ntsuas lub zog ntawm cov kev hloov pauv uas tshwm sim ntawm qhov sib npaug ntawm cov molecules nyob rau theem roj, qhov vibrational spectroscopy yog qhov tseem ceeb hauv kev ntsuas kev cuam tshuam ntawm IR hluav taws xob nrog teeb meem los ntawm absorption, emission, lossis reflection.
Hauv qab no yog cov npe ntawm qhov sib txawv ntawm kev sib hloov thiab kev vibrational spectroscopy hauv daim ntawv tabular.
Summary – Rotational vs Vibrational Spectroscopy
Kev sib hloov spectroscopy thiab vibrational spectroscopy yog tswj hwm los ntawm kev hloov hluav taws xob. Qhov sib txawv tseem ceeb ntawm kev sib hloov thiab kev vibrational spectroscopy yog qhov kev sib hloov spectroscopy yog qhov muaj txiaj ntsig los ntsuas lub zog ntawm cov kev hloov pauv uas tshwm sim ntawm qhov sib npaug ntawm cov molecules nyob rau theem roj, qhov vibrational spectroscopy yog qhov tseem ceeb hauv kev ntsuas kev cuam tshuam ntawm IR hluav taws xob nrog teeb meem los ntawm absorption, emission, lossis reflection.
