Azo tebchaw, vim lawv cov khoom tshwj xeeb photoisomerization, muaj cov ntawv thov tseem ceeb hauv cov yeeb yaj kiab ua haujlwm, cov khoom siv micro / nano, thiab cov txheej txheem ntse. Cov txheej txheem molding ncaj qha cuam tshuam rau lawv cov microstructure thiab kev ua tau zoo. Cov txheej txheem molding rau cov tebchaw no yuav tsum muaj kev tswj xyuas meej ntawm molecular orientation, aggregation state, thiab interfacial bonding thaum tswj cov tshuaj stability kom tau raws li qhov xav tau ntawm optical, mechanical, thiab teb ceev ntawm kev siv sib txawv.
Lub hauv paus ntawm cov txheej txheem molding nyob rau hauv uniformly dispersing thiab immobilizing azo molecules nyob rau hauv ib tug tej matrix, thaum tsis txhob ntxov ntxov isomerization induced los ntawm synthesis residues los yog lwm yam tseem ceeb. Rau cov tshuaj molding, feem ntau siv cov kuab tshuaj yuav tsum muaj ob qho tib si zoo solubility thiab tsis tshua muaj volatility kom tiv thaiv kom txhob muaj crystallization sai heev los yog hauv zos siab concentrations uas yuav ua rau txawv txav molecular aggregation. Thaum lub sij hawm txheej los yog casting, lub zog nto, qhov kub thiab txias gradient, thiab leveling ceev ntawm lub substrate cuam tshuam rau adsorption thiab alignment ntawm molecules ntawm lub interface. Kev tswj kom tsim nyog tuaj yeem ua rau muaj kev cuam tshuam tseem ceeb ntawm kev hloov pauv, txhim kho photoresponse anisotropy. Lub tshuab ziab khaub ncaws yuav tsum tau txo qhov kub thiab txias los yog lub tshuab nqus tsev pab kom txo tau qhov porosity thiab kev ntxhov siab concentration tshwm sim los ntawm cov kuab tshuaj evaporation sai, yog li tswj cov uniformity thiab mechanical kev ncaj ncees ntawm zaj duab xis.
Melting yog tsim rau azo derivatives nrog zoo compatibility nrog cov polymer matrix thiab yog feem ntau ua nyob rau hauv ib tug inert cua los tiv thaiv thermal decomposition los yog oxidation. Cov cua kub kub yuav tsum yog qis dua qhov thermal deactivation pib ntawm cov pab pawg azo. Tib lub sijhawm, kev taw qhia ntawm cov saw hlau molecular yog tswj los ntawm cov ntsia hlau shearing lossis tuag ncab kom nyiam ua raws cov pawg azo raws li cov kev taw qhia ntawm sab nraud quab yuam, txhim kho macroscopic photocontrol zog. Tus nqi cua txias kuj xav tau kev tswj kom meej; Kev ua kom txias qeeb txhawb kev tsim cov micro- cov qauv hauv cheeb tsam, thaum quenching ceev tuaj yeem siv los npaj cov yeeb yaj kiab amorphous, pob tshab heev.
Rau cov ntawv thov uas xav tau micro / nano patterning, photolithography lossis mos imprinting ua ke nrog photomask thev naus laus zis tuaj yeem siv. Cov wavelengths tshwj xeeb ntawm lub teeb yog siv los xaiv ua rau cis hauv zos - hloov dua siab tshiab, ua raws li kev txhim kho lossis kev txhim kho cov kauj ruam kom tau txais cov txheej txheem array. Cov txheej txheem no yuav tsum muaj kev tswj hwm nruj ntawm kev txhaj tshuaj thiab tom qab- cov txheej txheem ua haujlwm kom tsis txhob ua tiav isomerization lossis crosstalk ntawm cheeb tsam. Tsis tas li ntawd, ib puag ncig cov av noo, cov ntsiab lus oxygen, thiab impurity ions thaum lub sij hawm molding txheej txheem tuaj yeem cuam tshuam rau kev ruaj ntseg ntawm pawg azo. Yog li ntawd, inert gas tiv thaiv los yog ntxiv cov stabilizers feem ntau yog qhia los txhim kho kev ntseeg siab ntawm cov khoom tiav.
Hauv cov ntsiab lus, cov txheej txheem molding ntawm azo tebchaw yuav tsum muaj kev xav txog kev xaiv ntawm qhov nruab nrab dispersion, thermodynamic tsis, sab nraud quab yuam kev taw qhia, thiab tom qab- cov txheej txheem ua. Qhov zoo sib xws ntawm molecular conformation thiab macroscopic morphology tuaj yeem ua tiav los ntawm ntau- theem kev tswj hwm kev sib koom ua ke, tso lub hauv paus rau lawv cov kev siv ua haujlwm.
