Huge splitting of dichroic absorption energies in ordered cyanine dye films

文献信息

发布日期
DOI 10.1039/A808610I
影响因子 3.676
作者


查看原文

摘要

Molecular interactions in highly ordered films of the cyanine dye 1,7-bis(dimethylamino)heptamethine tetrafluoroborate were investigated by polarized UV/VIS spectroscopy. The films (80 nm) were prepared by a spherulitic crystallization process, in which both the arrangement of chromophores in the crystal lattice and the inclination of the crystal lattice in respect to the substrate could be varied. Seven different polymorphs were observed. The spectroscopic properties of the γ-form, having the largest splitting of the dichroic absorption energies of 12100 cm-1, were studied. This form exhibits three different crystal faces, showing quite different colors although the crystal structure is the same. The unusual absorption properties could be explained by way of superstructure–absorption relationships, derived from single crystals of this dye. The layer absorption is determined by strong excitonic interactions and by the directional dispersion of polaritons. The excitonic character of the absorption was proved by photobleaching of the crystal transitions by light of selected wavelength and polarization.

相关文献

A conformation-selective IR-UV study of the dipeptides Ac-Phe-Ser-NH2 and Ac-Phe-Cys-NH2: probing the SH⋯O and OH⋯O hydrogen bond interactions

Bin Yan, Sander Jaeqx, Wim J. van der Zande, Anouk M. Rijs

2014-04-23 Paper

DOI: 10.1039/C4CP00810C

Flux-assisted synthesis of SnNb2O6 for tuning photocatalytic properties

Dalal Noureldine, Dalaver H. Anjum, Kazuhiro Takanabe

2014-04-03 Paper

DOI: 10.1039/C4CP00654B

The effect of atomic ions on model σ-hole bonded complexes of AH3Y (A = C, Si, Ge; Y = F, Cl, Br)

Sean A. C. McDowell, Jerelle A. Joseph

2014-04-07 Paper

DOI: 10.1039/C4CP01074D

Computer modeling of the complexes of Chlorin e6 with amphiphilic polymers

Anna B. Solov'eva, Nickolay S. Melik-Nubarov

2014-04-14 Paper

DOI: 10.1039/C3CP55510K

Adsorption and splitting of H2S on 2D-ZnO1−xNy: first-principles analysis

Summayya Kouser, Nacir Tit

2014-04-22 Paper

DOI: 10.1039/C4CP01092B

Enhancing photo-induced ultrafast charge transfer across heterojunctions of CdS and laser-sintered TiO2 nanocrystals

Bryan T. Spann, S. Venkataprasad Bhat, Qiong Nian, Kelly M. Rickey, Gary J. Cheng, Xiulin Ruan, Xianfan Xu

2014-04-14 Paper

DOI: 10.1039/C4CP01298D

Construction of 3D V2O5/hydrogenated-WO3 nanotrees on tungsten foil for high-performance pseudocapacitors

Fengmei Wang, Yuanchang Li, Zhongzhou Cheng, Kai Xu, Xueying Zhan, Zhenxing Wang, Jun He

2014-04-17 Paper

DOI: 10.1039/C4CP01200C

Built-in potential shift and Schottky-barrier narrowing in organic solar cells with UV-sensitive electron transport layers

Cheng Li, Dan Credgington, Doo-Hyun Ko, Zhuxia Rong, Jianpu Wang, Neil C. Greenham

2014-04-11 Communication

DOI: 10.1039/C4CP01251H

Selective oxidation of alcohols in aqueous suspensions of rhodium ion-modified TiO2 photocatalysts under irradiation of visible light

Sho Kitano, Atsuhiro Tanaka, Keiji Hashimoto, Hiroshi Kominami

2014-05-08 Paper

DOI: 10.1039/C4CP00863D

您可能还喜欢

化合物问答

如何储存8-溴-4-羟基-6-(三氟甲氧基)喹啉-3-羧酸乙酯(CAS号:1072944-81-0)?

8-溴-4-羟基-6-(三氟甲氧基)喹啉-3-羧酸乙酯应储存在阴凉、干燥的地方,避免光照和高温。建议使用密封容器进行储存,以防止水分和空气的影响。

1072944-81-0Ethyl 8-bromo-4-hydr...
化合物问答

2,2-二(2-呋喃基)丙烷(CAS号:17920-88-6)的市场或研究趋势如何?

2,2-二(2-呋喃基)丙烷的研究趋势主要集中在新型材料的开发和应用,如高分子材料、有机光电材料等。市场趋势方面,随着环保要求的提高和新材料的应用,该化合物的需...

17920-88-62,2'-(2,2-Propanediy...
化合物问答

如何处理含有螺[呋喃并[3,4-b]吡啶-5(7H),4'-哌啶]-7-酮盐酸盐(CAS号:475152-31-9)的废料?

对于含有螺[呋喃并[3,4-b]吡啶-5(7H),4'-哌啶]-7-酮盐酸盐的废料,应首先进行分类和分离,以减少危险物质的数量。随后,可以考虑通过化学氧化、生物...

475152-31-97H-Spiro[furo[3,4-b]...
化合物问答

Cinnamyl 3-aminobut-2-enoate(CAS号:113898-97-8)安全吗?

Cinnamyl 3-氨基丁-2-烯酸在接触皮肤和眼睛时可能会引起刺激。应避免吸入其粉尘和烟雾。操作时应穿戴适当的个人防护装备,如手套、护目镜和实验室外套。

113898-97-8Cinnamyl 3-aminobut-...
化合物问答

反式-2-十二碳烯二酸(CAS号:6402-36-4)的市场或研究趋势如何?

反式-2-十二碳烯二酸在医药、材料科学等领域有一定的应用,但其市场相对较小。近年来,由于环保意识的提升,对环境友好型化学品的需求增加,研究倾向于开发更绿色的合成...

6402-36-4Traumatic Acid
化合物问答

什么是(9ci)-1H-苯并咪唑-5-乙酸(CAS号:473895-86-2)?

(9ci)-1H-苯并咪唑-5-乙酸是一种含氮杂环化合物,其化学结构为1H-苯并咪唑-5-乙酸。该化合物具有特定的分子式C8H7NO2,属于有机酸类化合物。

473895-86-21H-Benzimidazol-5-yl...
化合物问答

酞菁蓝(CAS号:147-14-8)的主要用途是什么?

酞菁蓝主要用作颜料和染料,广泛应用于塑料、油墨、涂料、纺织品及橡胶工业中。它也用于光敏材料,如太阳能电池和光刻胶。在医疗领域,酞菁蓝因其光敏特性被用于某些光动力...

147-14-8Copper(2+) phthalocy...
化合物问答

5-甲基-1,2,3,4-四氢异喹啉(CAS号:123593-99-7)安全吗?

5-甲基-1,2,3,4-四氢异喹啉在使用和储存时需要谨慎处理。它具有一定的毒性,应避免吸入其蒸气或直接接触皮肤和眼睛。操作此化合物时,建议佩戴防护眼镜、实验服...

123593-99-75-Methyl-1,2,3,4-tet...
化合物问答

如何处理含有3',4',5'-三甲氧基苯乙酮(CAS号:1136-86-3)的废料?

含有3',4',5'-三甲氧基苯乙酮的废液应首先确保其是否为危险废物,根据当地法规确定处理方法。通常,这类有机废液可以采用中和反应降低其pH值,然后通过蒸馏或萃...

1136-86-31-(3,4,5-Trimethoxyp...
化合物问答

如何储存KI-7(CAS号:1489263-00-4)?

KI-7应储存在通风良好的干燥环境中,避免光照和高温。建议使用密封容器储存,并保持在阴凉处。储存温度应控制在室温范围内,一般建议不超过25°C。避免与氧化剂接触...

1489263-00-42-(1-Benzyl-1H-indol...

来源期刊

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
自引率: 10.3%
年发文量: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

推荐供应商

免责声明
本页面提供的学术期刊信息仅供参考和研究使用。我们与任何期刊出版商均无关联,也不处理投稿事宜。如有投稿相关咨询,请直接联系相关期刊出版商。
如发现页面信息有误,请发送邮件至 support@chemtradehub.com 联系我们。我们将及时核实并处理您的问题。