Glass Structure Controls Crystal Polymorph Selection in Vapor-Deposited Films of 4,4 '-Bis(N-carbazolyI)-1,1 '-biphenyl

Van den Brande Niko; Gujral Ankit; Huang Chengbin; Bagchi Kushal; Hofstetter Heike; Yu Lian; Ediger Mark D.

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Glass Structure Controls Crystal Polymorph Selection in Vapor-Deposited Films of 4,4 '-Bis(N-carbazolyI)-1,1 '-biphenyl

机译：玻璃结构控制蒸汽沉积薄膜的晶体多晶型照片，为4,4'-bis（n-carbazolyi）-1,1'-biphenyl

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Glasses of a common OLED host material, 4,4'-bis(N-carbazolyl)-1,1'-biphenyl or CBP, were prepared by vapor deposition at various substrate temperatures. Consistent with previous work, the substrate temperature during deposition controls the anisotropic structure of the glass. Crystal growth at the free surface of CBP was very fast and was eliminated by covering the free surface with a thin overlayer of vapor-deposited tris(8-hydroxyquinoline) aluminum (Alq(3)). It was observed that vapor-deposited glasses of CBP with an overlayer crystallized into either the a or y polymorph, depending on the glass structure. To the best of our knowledge, this is the first demonstration that two glasses of the same organic compound, subjected to the same annealing conditions, grow crystals of different polymorphs. The a polymorph exhibited a fine-grained morphology, reminiscent of previous studies on glass-crystal (GC) growth, while the y polymorph exhibited dendritic growth. Crystals of both polymorphs grew rapidly below the glass transition temperature T5 in comparison to previously studied GC growth systems such as o-terphenyl. Surprisingly, T5 for CBP was found to be about 385 K, well above previously reported values.

机译：通过在各种衬底温度下，通过气相沉积来制备普通OLED主体材料，4,4'-BIS（N-咔唑基）-1,1'-联苯或CBP的玻璃。与先前的工作一致，沉积期间的基板温度控制玻璃的各向异性结构。 CBP自由表面的晶体生长非常快，并且通过覆盖具有蒸汽沉积的Tris（8-羟基喹啉）铝（Alq（3））的薄覆盖器的自由表面而消除。观察到蒸汽沉积的CBP玻璃，其具有覆盖器结晶成A或Y多晶型物，这取决于玻璃结构。据我们所知，这是第一次演示，即两杯相同的有机化合物，经受相同的退火条件，生长不同多晶型物的晶体。多晶型物表现出细粒度的形态，让人想起以前关于玻璃晶体（GC）生长的研究，而Y多晶型物表现出树枝状生长。与先前研究过的GC生长系统如O-三苯基，两种多晶型物的晶体在玻璃化转变温度T5中迅速增长。令人惊讶的是，发现CBP的T5为约385 k，远高于先前报道的值。

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《Crystal growth & design》 |2018年第10期|共8页
作者
Van den Brande Niko; Gujral Ankit; Huang Chengbin; Bagchi Kushal; Hofstetter Heike; Yu Lian; Ediger Mark D.;
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Univ Wisconsin Dept Chem 1101 Univ Ave Madison WI 53706 USA;

Univ Wisconsin Dept Chem 1101 Univ Ave Madison WI 53706 USA;

Univ Wisconsin Sch Pharm 777 Highland Ave Madison WI 53705 USA;

Univ Wisconsin Dept Chem 1101 Univ Ave Madison WI 53706 USA;

Univ Wisconsin Dept Chem 1101 Univ Ave Madison WI 53706 USA;

Univ Wisconsin Sch Pharm 777 Highland Ave Madison WI 53705 USA;

Univ Wisconsin Dept Chem 1101 Univ Ave Madison WI 53706 USA;

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正文语种 eng
中图分类晶体学;
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1. Glass Structure Controls Crystal Polymorph Selection in Vapor-Deposited Films of 4,4 '-Bis(N-carbazolyI)-1,1 '-biphenyl [J] . Van den Brande Niko, Gujral Ankit, Huang Chengbin, Crystal growth & design . 2018,第10期

机译：玻璃结构控制蒸汽沉积薄膜的晶体多晶型照片，为4,4'-bis（n-carbazolyi）-1,1'-biphenyl
2. Comparison crystal structure conformations of two structurally related biphenyl analogues: 4,4′-bis[3-(pyrrolidin-1-yl)prop-1-yn-1-yl]-1,1′-biphenyl and 4,4′-bis{3-[(S)-2-methylpyrrolidin-1-yl]prop-1-yn-1-yl}-1,1′-biphenyl [J] . Wan A., Penthala N.R., Fifer E.K., Acta Crystallographica Section E: Crystallographic Communications . 2015,第10期

机译：两个结构相关联苯类似物的比较晶体结构构象：4,4'-双[3-（吡咯烷-1-基）丙-1-基-1-基] -1,1'-联苯和4,4'-双{3-[（（S）-2-甲基吡咯烷-1-基] prop-1-yn-1-yl} -1,1'-联苯
3. Comparison of the crystal structures of 4,4′-bis[3-(4-methylpiperidin-1-yl)prop-1-yn-1-yl]-1,1′-biphenyl and 4,4′-bis[3-(2,2,6,6-tetramethylpiperidin-1-yl)prop-1-yn-1-yl]-1,1′-biphenyl [J] . Wan A., Penthala N.R., Fifer E.K., Acta Crystallographica Section E: Crystallographic Communications . 2015,第10期

机译：4,4'-双[3-（4-甲基哌啶-1-基）丙-1-in-1-基] -1,1'-联苯和4,4'-双[3]的晶体结构比较-（2,2,6,6-四甲基哌啶-1-基）prop-1-in-1-yl] -1,1'-联苯
4. Blue organic light emitting diode (OLED) from two-layer structure of 4,4'-bis(2,2'diphenylvinil)-1,1'-biphenyl (DPVBi) and PVK [C] . Othman, M.K., Salleh, . 2004

机译：由4,4'-双（2,2'diphenylvinil）-1,1'-联苯（DPVBi）和PVK的两层结构构成的蓝色有机发光二极管（OLED）
5. Role of N-acetyltransferase (NAT) polymorphism on 4,4'-methylene bis (2-chloroaniline) and 4,4'-methylenedianiline (MDA) acetylation, MDA hepatotoxicity and a proposal to study NAT expression in breast cancer. [D] . Zhang, Xiaoyan. 2005

机译：N-乙酰基转移酶（NAT）多态性对4,4'-亚甲基双（2-氯苯胺）和4,4'-亚甲基二苯胺（MDA）乙酰化，MDA肝毒性的作用以及研究NAT在乳腺癌中表达的建议。
6. catena-Poly[[[aquasilver(I)]-μ-1,1′-(butane-1,4-diyl)di-1H-imidazole-κ2N3:N3′] hemi(biphenyl-4,4′-dicarboxylate) dihydrate] [O] . Zheyu Zhang 2016

机译：阳离子-聚[[[[aquasilver（I）]]-μ-1,1'-（butane-1,4-diyl）di-1H-imidazole-κ2ñ3：N3']半（联苯-4,4'-二羧基酸酯）二水合物]
7. Comparison crystal structure conformations of two structurally related biphenyl analogues: 4,4′-bis[3-(pyrrolidin-1-yl)prop-1-yn-1-yl]-1,1′-biphenyl and 4,4′-bis{3-[(S)-2-methylpyrrolidin-1-yl]prop-1-yn-1-yl}-1,1′-biphenyl [O] . Anqi Wan, Narsimha Reddy Penthala, E. Kim Fifer, 2015

机译：比较两种结构相关的联苯类似物的晶体结构构象：4,4'-双[3-（吡咯烷-1-基）丙-1-炔-1-基] -1,1'-联苯和4,4'-双{3 - [（s）-2-甲基吡咯烷-1-基]丙-1-炔-1-基} -1,1'-联苯

Glass Structure Controls Crystal Polymorph Selection in Vapor-Deposited Films of 4,4 '-Bis(N-carbazolyI)-1,1 '-biphenyl

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