Kinetic Monte Carlo study of diffraction gratingrecording/erasure in DNA-based azo-dye systems

摘要

Recently,we have proposed a simplified kinetic Monte Carlo model which mimics the inscription/erasure ofdiffraction gratings in DNA matrix with azodyes. Preliminary results correctly reproduce the observations madefor the photochromic system DR1:DNA-CTMA~2: very short operational times (inscription/erasure), opticalstability and reversibility. In this paper we analyze semi-intercalation model of paper" analytically and discussits predictions. Next, we modify this model by taking the DNA model chain directly into account. Local freevolume determines the transition probabilities of trans-cis photoisomerization reactin. Using the model weaddress the open questions: (i), short operational time; (ii), small diffraction efficiency; and (iii), one exponentialinscription.