GROWTH, STRUCTURE, AND PHASE BEHAVIOR OF DI-TERT-BUTYL-PARA-TERPHENYL CRYSTALS

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

The results of studying the growth of para-terphenyl derivative (4,4"-di-tert-butyl-para-terphenyl (tBu-3P-tBu)) crystals are presented. The solubility of this compound in toluene at 20°С has been established by spectrophotometry. Using the techniques of growth from solutions and physical vapor transport,tBu-3P-tBu single crystals up to 1 cm long have been obtained for the first time. Their structure at 85 K has been interpreted in the triclinic system, sp. gr. P1 (Z = 8), using single-crystal X-ray diffraction. Flat rectangular crystals with the best morphological characteristics have been grown from vapor. The developed face of these crystals exhibits elementary growth steps 1.4 nm high, corresponding to molecular monolayers oriented in the (001) plane. The presence of a polymorphic transition at 229.2°C and mesomorphic liquid crystal phase above the melting temperature (255.6°С) is found.

Авторлар туралы

V. Postnikov

Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics,”Russian Academy of Sciences, Moscow, 119333 Russia

Email: postva@yandex.ru
Россия, Москва

N. Sorokina

Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics,”Russian Academy of Sciences, Moscow, 119333 Russia

Email: postva@yandex.ru
Россия, Москва

A. Kulishov

Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics,”Russian Academy of Sciences, Moscow, 119333 Russia

Email: postva@yandex.ru
Россия, Москва

G. Yurasik

Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics,”Russian Academy of Sciences, Moscow, 119333 Russia; Center of Photochemistry, Federal Scientific Research Centre“Crystallography and Photonics,”Russian Academy of Sciences, Moscow, Russia

Email: postva@yandex.ru
Россия, Москва; Россия, Москва

M. Lyasnikova

Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics,”Russian Academy of Sciences, Moscow, 119333 Russia

Email: postva@yandex.ru
Россия, Москва

T. Sorokin

Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics,”Russian Academy of Sciences, Moscow, 119333 Russia

Email: postva@yandex.ru
Россия, Москва

M. Skorotetsky

Enikopolov Institute of Synthetic Polymer Materials, Russian Academy of Sciences, Moscow, Russia

Email: postva@yandex.ru
Россия, Москва

O. Borshchev

Enikopolov Institute of Synthetic Polymer Materials, Russian Academy of Sciences, Moscow, Russia

Хат алмасуға жауапты Автор.
Email: postva@yandex.ru
Россия, Москва

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© В.А. Постников, Н.И. Сорокина, А.А. Кулишов, Г.А. Юрасик, М.С. Лясникова, Т.А. Сорокин, М.С. Скоротецкий, О.В. Борщев, 2023

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