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Kwak, Sang Kyu
Kyu’s MolSim Lab @ UNIST
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Heterochiral Doped Supramolecular Coordination Networks for High-Performance Optoelectronics

Shang, XiaoboSong, InhoLee, Jeong HyeonChoi, WanukOhtsu, HiroyoshiJung, Gwan YeongAhn, JaeyongHan, MyeonggeunKoo, Jin YoungKawano, MasakiKwak, Sang KyuOh, Joon Hak
Issued Date
ACS APPLIED MATERIALS & INTERFACES, v.11, no.22, pp.20174 - 20182
Chiral self-sorting has great potential for constructing new complex structures and determining chirality-dependent properties in multicomponent mixtures. However, it is still of great challenge to achieve high fidelity chiral self-discrimination. Besides, the researches on the coordination polymers or metal-organic frameworks for micro/nanooptoelectronics are still rare due to their low conductivity and difficulty in developing a rapid and simple scale-up synthetic method. Here, heterochiral supramolecular coordination networks (SCNs) were synthesized by the solvothermal reaction of naphthalene diimide enantiomers and cadmium iodide, using the chirality as a synthetic tuning parameter to control the morphologies. Intriguingly, heterochiral micro/nanocrystals exhibited photochromic and photodetecting properties. Furthermore, we also developed a simple and efficient doping method to enhance the conductivity and photoresponsivity of micro/nanocrystals using hydrazine. From experimental and theoretical studies, the mechanism was suggested as follows: the radicals in the singly occupied molecular orbital level of the ligands provide charge carriers that can undergo through-space transport between Ï€-πstacked ligands and the electron transfer from adsorbed hydrazine to the SCNs results in reduction of energy gap, leading to increased conductivity. Our findings demonstrate a simple and powerful strategy for implementing coordination networks with redox ligands for micro/nanooptoelectronic applications.
American Chemical Society
Keyword (Author)
chiral self-discriminationdopingmicro/nanodevicesoptoelectronicssupramolecular coordination network
Solvothermal reactionsSupramolecular coordinationLigandsHydrazineMolecular orbitalsNaphthaleneOptoelectronic devicesOrganic polymersOrganometallicsSupramolecular chemistryCoordination networksMetal organic frameworkmicro/nanodevicesMulticomponent mixtureSelf discriminationCadmium compoundsChiralityCrystalline materialsDoping (additives)Free radical reactionsSingly occupied molecular orbitals


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