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Thermoelectric conversion material and thermoelectric conversion element

A thermoelectric conversion material and conductivity technology, applied in the direction of electrical components, thermoelectric device junction lead-out materials, thermoelectric device manufacturing/processing, etc., can solve problems such as no guidance

Inactive Publication Date: 2016-11-23
NARA INSTITUTE OF SCIENCE AND TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Shimada et al. disclose that the Seebeck coefficient is about 1 mV / K, and no teaching is given about the direct increase of the Seebeck coefficient caused by the thermal motion of the molecule and the molecular design for this

Method used

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  • Thermoelectric conversion material and thermoelectric conversion element
  • Thermoelectric conversion material and thermoelectric conversion element
  • Thermoelectric conversion material and thermoelectric conversion element

Examples

Experimental program
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Embodiment

[0174] Hereinafter, the present invention will be described in more detail based on examples. However, the following examples do not limit the technical scope of the present invention in any way.

Synthetic example 1

[0175] (Synthesis Example 1) (6,20-Di(dodecyl)-29H,3H-tetrabenzo[b,g,l,q]porphyrin)

[0176]

[0177] Dipyrromethane (0.30 g, 1.0 mmol) was added to the reaction vessel replaced with argon, and dissolved in dichloromethane (200 ml). Argon gas was bubbled thereinto for 10 minutes. Next, tridecanal (0.3ml, 1.1nnol) and trifluoroacetic acid (TFA) (2 drops) were added sequentially, and stirred for 17 hours in the dark. 2,3-Dichloro-5,6-dicyano-p-benzoquinone (DDQ) (0.35 g) was added thereto, followed by further stirring for 2 hours. After completion of the reaction, the solvent was removed until the volume of the solution became half, and alumina column chromatography (chloroform) was performed. Further, purification was performed by silica gel column chromatography (dichloromethane) and GPC, and finally recrystallization (chloroform / methanol) was performed to obtain the target compound as a reddish-brown solid. Yield: 80% (389mg, 0.405mmol)

[0178] 1 H NMR (400MHz.CDCl ...

Synthetic example 2

[0181] (Synthesis Example 2) C 12 h 25 -H 2 BP

[0182]

[0183] The porphyrin obtained above was heated in a glass tube oven in vacuum at 200° C. for 30 minutes, whereby benzoporphyrin was obtained as a green solid.

[0184] 1 H NMR (400MHz.CDCl 3 ): (m, 2H), 9.27(m, 4H), 9.09-8.89(m, 4H), 8.09(m, 8H), 4.68-4.22(m, 4H), 2.67-2.32(m, 4H), 2.04(m , 4H), 1.76-1.25 (m, 32H), 0.92 (m, 6H), -2.76 (brs, 2H) ppm.

[0185] HRMS (MALDI-TOF): m / z=846.5595, C 60 h 70 N 4 Calculated value: 846.5600[M] + .

[0186] Such as figure 2 As shown, sharp and broad peaks were observed at 320-360K by DSC (170-570K), and a peak was observed around 440K, indicating that a structural phase transition occurred.

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Abstract

An organic thermoelectric conversion material containing: a basic skeleton that comprises a polycyclic aromatic ring having carrier transport properties; and a conductive compound that bonds to the basic skeleton and includes an alkyl group which causes the intermolecular distance and molecular packing structure of the basic skeleton to change due to thermal motion.

Description

technical field [0001] The present invention relates to an organic thermoelectric conversion material and a thermoelectric conversion element manufactured using the material. Background technique [0002] In recent years, attention has been paid to thermoelectric conversion elements as means for recovering unused thermal energy in the environment as electrical energy. [0003] Conventionally, CoSb has been mainly used and studied as a thermoelectric conversion material due to its relatively high thermoelectric conversion efficiency. 3 However, such an inorganic semiconductor material contains rare elements and is expensive, and there is a problem that the processability of the material is insufficient. Therefore, in recent years, research on organic thermoelectric conversion materials that are inexpensive and excellent in material processability has been actively conducted. [0004] As conventional organic thermoelectric conversion materials, polyaniline (Patent Documents ...

Claims

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Application Information

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IPC IPC(8): H01L35/24H01L35/34H02N11/00
CPCH10N10/856H10N10/01C07D487/22C07D495/22C07D491/22
Inventor 中村雅一小岛广孝阿部龙山田容子葛原大轨高桥功太郎山本达也药师寺秀典池田征明
Owner NARA INSTITUTE OF SCIENCE AND TECHNOLOGY
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