title: Study of proton conductivity of a 2D flexible MOF and a 1D coordination polymer at higher temperature.
abstract: We report the proton conduction properties of a 2D flexible MOF and a 1D coordination polymer having the molecular formulas {[Zn(C10H2O8)0.5(C10S2N2H8)]·5H2O]}n (1) and {[Zn(C10H2O8)0.5(C10S2N2H8)]·2H2O]}n (2), respectively. Compounds 1 and 2 show high conductivity values of 2.55 × 10(-7) and 4.39 × 10(-4) S cm(-1) at 80 °C and 95% RH. The conductivity value of compound 1 is in the range of those for previously reported flexible MOFs, and compound 2 shows the highest proton conductivity among the carboxylate-based 1D CPs. The dimensionality and the internal hydrogen bonding connectivity play a vital role in the resultant conductivity. Variable-temperature experiments of both compounds at high humidity reveal that the conductivity values increase with increasing temperature, whereas the variable humidity studies signify the influence of relative humidity on high-temperature proton conductivity. The time-dependent measurements for both compounds demonstrate their ability to retain conductivity up to 10 h.
authors.affiliation: Department of Chemistry, IISER Bhopal , ITI Gas Rahat Building, Bhopal 462066, Madhya Pradesh, India.
authors.forename: Suresh
authors.initials: S
authors.lastname: Sanda
authors.forename: Soumava
authors.initials: S
authors.lastname: Biswas
authors.forename: Sanjit
authors.initials: S
authors.lastname: Konar
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry*; D004553:Electric Conductivity; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D011522:Protons; D013696:Temperature; D015032:Zinc / Q000737:chemistry
chemical_list: D002264:Carboxylic Acids; D009942:Organometallic Compounds; D011108:Polymers; D011522:Protons; D015032:Zinc