Vapour diffusion growth and characterisation of fully deuterated triglycine sulphate (ND2CD2COOD)3D2SO4

Hudspeth, Jessica; Goossens, Darren

doi:10.1016/j.jcrysgro.2011.11.002

Cited by 6 publications

(5 citation statements)

References 27 publications

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“…In the previous studies using single-crystal neutron diffraction, Kay & Kleinberg (1973) proposed an ordered structure of HTGS because the domains were oriented by applying an external electric field. Hudspeth & Goossens (2012) proposed an ordered structure for FDTGS because T C for FDTGS increased by approximately 12 K compared to HTGS. Choudhury & Chitra (2008) proposed a disordered structure for the GI amino group with unequal occupancies of N11 (88%) and N11B (12%); this occupancy ratio is in excellent agreement with the results in this study.…”

Section: Figurementioning

confidence: 99%

Single-crystal structure analysis of non-deuterated triglycine sulfate by neutron diffraction at 20 and 298 K: a new disorder model for the 298 K structure

Terasawa¹,

Ohhara²,

Sato³

et al. 2022

Acta Crystallogr E Cryst Commun

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Precise single-crystal structure analyses of the title compound, bis(glycinium) sulfate–glycine (1/1), 2C2H6NO2 +·SO4 2−·C2H5NO2 (or C6H17N3O10S), non-deuterated triglycine sulfate (HTGS) at 20 K and 298 K were undertaken using time-of-flight neutron diffraction data. At 20 K for the O—H...O hydrogen bond between the glycinium cation and the zwitterionic, unprotonated glycine molecule that is associated with the ferroelectric behaviour of HTGS, O—H = 1.070 (3), H...O = 1.408 (3) [δ = 0.338 (4)], O...O = 2.4777 (15) Å and O—H...O = 179.0 (4)°, which is in good agreement with previous studies. Two reasonable structures for the same three atoms were refined for the 298 K dataset. One is a single-minimum potential-energy model, with O—H = 1.090 (12), H...O = 1.361 (12) [δ = 0.271 (17)], O...O = 2.450 (7) Å and O—H...O = 179.2 (10)°, having the H atom with a large ellipticity along the bond path between the O atoms. The other is a double-minimum potential-energy model having two H atom sites with occupancies of 0.876 (8) and 0.124 (8): for the major occupancy component, O—H = 1.065 (12), H...O = 1.387 (12), O...O = 2.451 (7) Å and O—H...O = 178.2 (11)° and for the minor component, O—H = 1.06 (4), H...O = 1.41 (4), O...O = 2.451 (7) Å and O—H...O = 166 (2)°. These models did not show any significant differences in R factors. In addition, the unit-cell parameters and other structural parameters of HTGS did not show any major differences compared to those of partially deuterated TGS and fully deuterated TGS for both 20 K and 298 K.

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Section: Figurementioning

confidence: 99%

Single-crystal structure analysis of non-deuterated triglycine sulfate by neutron diffraction at 20 and 298 K: a new disorder model for the 298 K structure

Terasawa¹,

Ohhara²,

Sato³

et al. 2022

Acta Crystallogr E Cryst Commun

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“…[9][10][11][12] Deuteration of TGS by dissolution and recrystallization in D 2 O produces (ND 2 CH 2 COOD) 3 ÁD 2 SO 4 , which is commonly referred to as partially deuterated TGS (DTGS). One of these is deuteration of TGS.…”

Section: Introductionmentioning

confidence: 99%

“…One of these is deuteration of TGS. [9][10][11][12] Deuteration of TGS by dissolution and recrystallization in D 2 O produces (ND 2 CH 2 COOD) 3 ÁD 2 SO 4 , which is commonly referred to as partially deuterated TGS (DTGS). In fully deuterated TGS (FDTGS) with chemical formula (ND 2 CD 2 COOD) 3 .D 2 SO 4 , the H atoms in the CH 2 group will also be replaced by deuterium.…”

Section: Introductionmentioning

confidence: 99%

Triglycine sulphate and its deuterated analog in polyurethane matrix for thermal/infrared detection: A comparison

Sudhakaran

Philip

2015

J of Applied Polymer Sci

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Composites comprising of polycrystalline triglycine sulphate (TGS) or its deuterated analog (DTGS) in powder form dispersed in polyurethane (PU) are synthesized for pyroelectric sensor applications. TGS and DTGS have high pyroelectric coefficients, but are susceptible to humidity, and PU is inherently electroactive. So composites made of TGS or DTGS dispersed in PU can be expected to have high pyroelectric coefficient as well as immunity to humidity. Composites with inclusion volume fraction between 0 and 0.25 are prepared, and their dielectric, pyroelectric, and thermal properties measured. In general, deuteration leads to decrease in dielectric constant and specific heat, but increase in thermal conductivity. The pyroelectric coefficient and figures of merit get enhanced significantly with deuteration as well as inclusion volume fraction. Comparison with similar composites shows that these samples have the highest values for figures of merit, indicating their potential use as thermal/infrared detectors that are immune to humidity.

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“…During decades, TGS single crystals, in spite of their hygroscopicity [32][33][34][35][36], remain preferable for uncooled high-sensitive in wide spectral IR range pyroelectric detectors [32][33][34][35][36][37][38][39], which are used for astronomical and earthbased IR thermal imaging [32,33,35,36], for Earth surface and atmosphere space IR monitoring [32,33,35,36], as well as for Mars [34] and Venus [37] space missions. TGS single crystals are grown from an aqueous solution by the method of slow cooling valid even at the space microgravity [32,33] or by the method of slow evaporation of the solvent below or above the Curie temperature (≈ 322 K) [27,31], as well as by vapour diffusion method [40]. The reactivity of TGS with water allows etching its surface [27,29,[41][42][43].…”

mentioning

confidence: 99%

“…The reactivity of TGS with water allows etching its surface [27,29,[41][42][43]. Being watersoluble, TGS is insoluble in ethanol, so the addition of ethanol reduces the speed of TGS solubility etching [40].…”

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confidence: 99%

Voltage controlled awakening of memristor-like dynamic current–voltage loops of ferroelectric triglycine sulfate

Morozovsky

2021

Appl. Phys. Lett.

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For the study of polarization reversal features in the structure of "mixed ionicelectronic conductor -on -ferroelectric" type, the hydrogen bonded molecular ferroelectric crystal triglycine sulphate (TGS) is used. The dynamic currant-voltage (I-V-) loops of thin TGS plates of polar (010) cut with dissimilar electrodes on the opposite surfaces (vacuum deposited Ag and Ag-paste diluted with a water-ethanol mixture) are investigated. After electroforming in the low-voltage vicinity of coercive voltage, during further cycling, a reversible transformation of I-V-loop shape occurs from typical of non-linear dielectrics to typical of memristive systems and than to typical of ferroelectrics (and vice versa) with a sequential increase (decrease) of drawing voltage amplitude. Such "awakening" and "falling asleep" of I-V-loops of the memristor type is apparently associated with reversible electromigration and accumulation of charged species (e.g., protons), in the hydrated surface layer of TGS as a component of electrochemical capacitor-on-ferroelectric structure. The observed transformation can be explained by considering the coupled ion transfer and polarization reversal taking into account the swinging of the boundary of the built-in chemical inhomogeneity under conditions of linear and/or nonlinear dynamics of ion drift and ionic concentration polarization caused by charged species transfer under the applied voltage.

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Vapour diffusion growth and characterisation of fully deuterated triglycine sulphate (ND2CD2COOD)3D2SO4

Cited by 6 publications

References 27 publications

Single-crystal structure analysis of non-deuterated triglycine sulfate by neutron diffraction at 20 and 298 K: a new disorder model for the 298 K structure

Single-crystal structure analysis of non-deuterated triglycine sulfate by neutron diffraction at 20 and 298 K: a new disorder model for the 298 K structure

Triglycine sulphate and its deuterated analog in polyurethane matrix for thermal/infrared detection: A comparison

Voltage controlled awakening of memristor-like dynamic current–voltage loops of ferroelectric triglycine sulfate

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