Investigation of Charge-Transfer Interaction  in Mixed Stack Donor–Acceptor Cocrystals Toward Tunable Solid-State Emission Characteristics

Usman, Rabia; Khan, Arshad; Wang, Mingliang; Luo, Yi; Sun, Weiwei; Sun, Hao; Du, Cunbin; He, Nongyue

doi:10.1021/acs.cgd.8b00852

Cited by 56 publications

(37 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, most functional cocrystals are neutral/quasineutral and display CT features, wherein charge transfer occurs coupled with strong interactions such as π–π interactions, hydrogen bonds, and halogen bonds between heteromeric molecules . For instance, cocrystals composed of strong electron acceptors, such as 7,7,8,8‐tetracyanoquinodimethane, tetracyanobenzene (TCNB), and C 60 , generally display π–electron delocalization from the donor to the acceptor, that is, intermolecular charge transfer. For example, the cocrystal composed of 4‐styrylpyridine (Spe, donor) and TCNB (acceptor) follows a mixed‐stack structure, wherein Spe and TCNB stack face‐to‐face alternatively with strong intermolecular interactions ( Figure a) .…”

Section: Rational Design and Controllable Preparation Of Organic Cocrmentioning

confidence: 99%

Cocrystal Engineering: A Collaborative Strategy toward Functional Materials

et al. 2019

View full text Add to dashboard Cite

materials, [9][10][11][12] which are crystalline singlephase materials composed of two or more different compounds generally in a stoichiometric ratio, [13] providing a platform for unveiling the structure-property relationships at a molecular level. [14] The building blocks are assembled via noncovalent interactions, offering the opportunity to achieve noncovalent synthesis of functional molecules. [15] Compared with the traditional covalent synthesis, cocrystal engineering offers numerous advantages, including: 1) avoiding complicated synthesis procedures, and cocrystal assemblies have been successfully fabricated by the vapor methods and solution-processing methods in a facile and low-cost way; 2) manipulating intermolecular interactions through selecting suitable conformers from a plentiful supply of raw materials, resulting in tunable structures, morphologies, and sizes; 3) achieving rare and multifunctional properties through a collaborative strategy in distinct constituent units, which are difficult to realize for individual components. [16][17][18] Cocrystal engineering began to draw much attention since the exploration of the metal conductive tetrathiafulvalene-7,7,8,8-tetracyanoquinodimethane (TTF-TCNQ) cocrystals in 1973. [19] The peculiar conductivity in organic materials makes it possible for cocrystals to serve as organic electrodes, which can effectively lower the contact resistance and further improve device performance. Encouraged by this, cocrystals can serve as a breakthrough and provide an opportunity to discover novel physicochemical properties, which are far beyond the performance of single materials. In this respect, dielectric response [20] and nonlinear optics [21,22] are also realized through rational design of each component, which is absent in their constitute components. Even more, the bottom-up supramolecular assembly provides the opportunity to equip them with the individual properties of the donor or acceptor to create multifunctional materials. [23] Typically, ambipolar charge transport can be generated by coassembling p-type semiconductors and n-type ones, and the charge-carrier mobility is now up to 1.57 cm 2 V −1 s −1 for holes and 0.47 cm 2 V −1 s −1 for electrons. [24] To date, these exciting results accelerate the investigations of organic functional cocrystals, such as room-temperature ferroelectricity, [25][26][27] optical waveguide properties, [28,29] pure organic room-temperature phosphorescent properties, [30][31][32] stimulusresponse (e.g., mechanical stress, [33,34] heat, [35,36] or solvent [37] ) characteristics, photovoltaics, [38] and near-infrared photothermal (PT) conversion and imaging, [39] etc.Cocrystal engineering with a noncovalent assembly feature by simple constituent units has inspired great interest and has emerged as an efficient and versatile route to construct functional materials, especially for the fabrication of novel and multifunctional materials, due to the collaborative strategy in the distinct constituent units. Meanwhile, the precise crystal a...

show abstract

Section: Rational Design and Controllable Preparation Of Organic Cocrmentioning

confidence: 99%

Cocrystal Engineering: A Collaborative Strategy toward Functional Materials

et al. 2019

View full text Add to dashboard Cite

show abstract

Section: Tuning Light Emissionmentioning

confidence: 99%

“…They prepared two typical kinds of organic luminescent cocrystals with tunable emission colors and comprising pyrene-OFN and pyrene-TCNB.I nterestingly,t he cocrystals demonstrate distinct optical properties due to different intermolecular interactions,arene-perfluoroarene (AP) and charge-transfer interactions.U nexpectedly,apyrene-TCNB complex with strong charge-transfer interactions can generate WLE when doped into ap yrene-OFN host. [74], [1], [26], [4], [21], [43], [ 60], [ 25], [65], [70], [68], [ 72] and [73]. [76][77][78] Ref.…”

Section: Tuning Light Emissionmentioning

confidence: 99%

“…Another kind of acceptor,T CNB,i sa lso commonly used to tune optical properties of organic solid materials through CT interactions,not only for two-component compounds [73][74][75] but also for three-component complexes. [25,26,60] He and the co-workers [74] reported excellent fluorescent tunability of three novel binary D-A cocrystals with strong charge-transfer interactions,i nw hich TCNB and three derivatives of PA H (naphthalene,a nthracene and pyrene) are selected as the acceptor and donor, respectively (Figure 4, FT',G T ' and HT'). Thet unable emission is associated with the ionization potential of the polycyclic donors and the charge-transfer interactions within the cocrystals.Asimple two-step chargetransfer induced co-assembly method with solvent-etching process was developed to prepare various multi-component CT crystalline microtubes based on (anthracene) x (phenanthrene) 1Àx (TCNB) (0 x 1) (Figure 4, MT',M J 0.5 % T',M J 0.15 T',a nd JT').…”

Section: Tuning Light Emissionmentioning

confidence: 99%

“…In these supramolecular systems,a ne fficient energy-transfer behavior from pyrene-OFN to pyrene-TCNB occurred due to the well-matched spectra of the precursors and as uitable energy D/A distance.I na ddition to above-mentioned two kinds of acceptors,t here are other acceptors that have been reported for tuning optical properties more recently. [76][77][78] [74], [1], [26], [4], [21], [43], [ 60], [ 25], [65], [70], [68], [ 72] and [73].…”

Section: Tuning Light Emissionmentioning

confidence: 99%

See 2 more Smart Citations

Organic Cocrystals: Beyond Electrical Conductivities and Field‐Effect Transistors (FETs)

et al. 2019

View full text Add to dashboard Cite

Organic cocrystals based on noncovalent intermolecular interactions (weak interactions) have aroused interest owing to their unpredicted and versatile chemicophysical properties and their applications. In this Minireview, we highlight recent research on organic cocrystals on reducing the aggregation‐caused quenching (ACQ) effect, tuning light emission, ferroelectricity and multiferroics, optical waveguides, and stimuli‐responsiveness. We also summarize the progress made in this field including revealing the structure–property relationships and developing unusual properties. Moreover, we provide a discussion on current achievements, limitations and perspectives as well as some directions and inspiration for further investigation on organic cocrystals.

show abstract

Hetero‐aggregation‐induced Tunable Emission (HAITE) Through Cocrystal Strategy

Huang

Zhang

2022

Handbook of Aggregation‐Induced Emission

View full text Add to dashboard Cite

Investigation of Charge-Transfer Interaction in Mixed Stack Donor–Acceptor Cocrystals Toward Tunable Solid-State Emission Characteristics

Cited by 56 publications

References 45 publications

Cocrystal Engineering: A Collaborative Strategy toward Functional Materials

Cocrystal Engineering: A Collaborative Strategy toward Functional Materials

Organic Cocrystals: Beyond Electrical Conductivities and Field‐Effect Transistors (FETs)

Hetero‐aggregation‐induced Tunable Emission (HAITE) Through Cocrystal Strategy

Contact Info

Product

Resources

About