Abstract This study reports a new nonfullerene electron transporting material (ETM) based on naphthalene diimide (NDI) small molecules for use in high‐performance perovskite solar cells (PSCs). These simultaneously achieve high power conversion efficiency (PCE) of over 20% and long‐term stability. New NDI‐ID ( N , N′ ‐Bis(1‐indanyl)naphthalene‐1,4,5,8‐tetracarboxylic diimide) consisting an ‐substituted indane group having simultaneous alicyclic aromatic characteristics is synthesized by...

Highly efficient nonlinear optical organic crystals are very attractive for various photonic applications including terahertz (THz) wave generation. Up to now, only two classes of ionic based on either pyridinium or quinolinium with extremely large macroscopic nonlinearity have been developed. This study reports a new class introducing electron-accepting benzothiazolium, which exhibit higher electron-withdrawing strength than and in benchmark crystals. The benzothiazolium consisting acentric...

This study explains the factors that enhance innovation performance of a cluster by focusing on its knowledge spillovers. Based literature industry clusters, organizational diversity, and innovation, we suggest testable propositions. Specifically, this suggests two types diversity (diversity nationality organization type) positively impact cluster. In addition, network size embeddedness have positive moderating effect relationship between performance. aims to determine whether clusters...

Abstract This study presents newly developed yellow‐colored organic electro‐optic crystals to provide high terahertz (THz) wave generation efficiency. Compared with currently existing red‐ or orange‐colored crystals, which are used for most benchmark THz sources, have additional superior advantages generation, e.g., higher transparency in the visible wavelength range accompanying different phase‐matching possibilities. The new consist of a highly nonlinear optical...

Developing new organic crystals for efficient broad terahertz (THz) wave generation remains challenging, as multiple critical material properties must be achieved simultaneously within a single crystal. In this work, we introduce series of nonlinear optical salt tailored THz generators. The newly designed fluorinated cationic chromophore, 6-fluoro-2-(4-hydroxystyryl)-1-methylquinolinium (OH6FQ), has been incorporated with various or non-fluorinated anions into six different ionic crystals....

Abstract A design strategy is proposed for electron‐transporting materials (ETMs) with homochiral asymmetric‐shaped groups highly efficient non‐fullerene perovskite solar cells (PSCs). The electron transporting N , ′‐bis[( R )‐1‐phenylethyl]naphthalene‐1,4,5,8‐tetracarboxylic diimide (NDI‐PhE) consists of two chiral ( )‐1‐phenylethyl (PhE) that act as solubilizing by reducing molecular symmetry and increasing the free volume. NDI‐PhE exhibits excellent film‐forming ability high solubility in...

Abstract A series of chiral stereoisomers electron transporting materials with two substituents is rationally designed and synthesized, the influence stereoisomerism on their physical electronic properties investigated to demonstrate highly efficient stable perovskite solar cells (PSCs). Compared mesomeric naphthalene diimide (NDI) derivatives, which have heterochiral side groups centrosymmetric molecular packing symmetric‐shaped conformers in crystalline state, enantiomeric NDI derivatives...

By taking advantage of a unique mechanism aggregation-induced emission (AIE) phenomena, AIE luminogens (AIEgens) have been provided as solution to overcome the limitations conventional fluorophores bearing feature aggregation-caused quenching (ACQ) phenomena. Especially, AIEgens paved way develop fluorogenic probes ideal for fluorescent imaging in live cell conditions. Despite high demand discovery new AIEgens, it is still challenging find versatile molecular platform generate diverse...

Abstract In the development of new organic crystals for nonlinear optical and terahertz (THz) applications, it is very challenging to achieve essentially required non‐centrosymmetric molecular arrangement. Moreover, resulting crystal structure mostly unpredictable due highly dipolar components with complex functional substituents. this work, salt top‐level macroscopic nonlinearity by controlling van der Waals volume ( V vdW ), rather than trial error, are logically designed. When ionic...

Abstract Highly efficient off‐diagonal THz generators based on novel organic nonlinear optical single crystals with optimal polar axis orientation in the as‐grown crystal morphology are introduced. The newly developed fluorinated and non‐fluorinated cationic chromophores exhibit a non‐centrosymmetric structure P2 1 space group symmetry crystalline phase. In particular, PB5FB‐T (5‐fluoro‐2‐(4‐(2‐(hydroxymethyl)pyrrolidin‐1‐yl)styryl)‐3‐methylbenzothiazol‐3‐ium 4‐methylbenzenesulfonate) have...

Abstract New molecular salt crystals based on linear‐shaped polymer‐like cation–anion assembly exhibiting extremely large nonlinear optical response and high THz generation efficiency are reported. Two hydroxy benzothialzolium PMB (2‐(4‐(4‐(hydroxymethyl)piperidin‐1‐yl)styryl)‐3‐methylbenzo[d]thiazol‐3‐ium) with different benzenesulfonate counter anions provide isomorphic crystal structure acentric monoclinic Cc space group symmetry. In contrast to previously reported benchmark a...

Abstract A new organic three‐component single crystals are developed using the so‐called “pseudo‐isomorphic cocrystallization” for nonlinear optical and terahertz (THz) photonic applications. The pseudo‐isomorphic cocrystallization is based on two homocrystals exhibiting similar molecular ordering feature in crystalline state, but different crystallographic space groups. Such cocrystals consist of three components, highly 2‐(4‐hydroxystyryl)‐1‐methylquinolinium (OHQ) cation, counter anions....

An asymmetric construction of enantioenriched 2,3-substituted-1-benzazepine derivatives containing a cyclic tertiary amine moiety was developed by copper-catalyzed reductive intramolecular cyclization (E)-dienyl arenes with tethered ketimine. This protocol involves tandem chemo-, regio-, and enantioselective hydrocupration in the presence chiral bisphosphine-copper catalyst. Under mild conditions, broad range 1-benzazepine obtained good to high yields degrees diastereoselectivity enantioselectivity.

Abstract Efficient broadband organic terahertz (THz) generators using X‐shaped alignment of the nonlinear optical chromophores, as an alternative to parallel chromophores in benchmark crystals, are reported. All developed six benzothiazolium crystals exhibit isomorphic resulting unprecedentedly large off‐diagonal nonlinearity (>100 × 10 −30 esu), which presents one largest crystals. The efficient THz wave generation employing nonlinearity, contrast present state‐of‐the‐art that mostly...

Solid-state molecular phonons play a crucial role in the performance of diverse photonic and optoelectronic devices. In this work, new organic terahertz (THz) generators based on catechol group that acts as phonon suppressing intermolecular adhesive are developed. The is widely used mussel-inspired mechanical chemistry. Newly designed electro-optic crystals consist catechol-based nonlinear optical 4-(3,4-dihydroxystyryl)-1-methylpyridinium (DHP) cations 4-(trifluoromethyl)benzenesulfonate...

Pharmaceutical cocrystals of pelubiprofen (PF) were discovered for the first time. 16 candidates to form with PF selected via ANN model and p K a rule.

Abstract This paper investigates the effects on knowledge creation of network size and partner diversity formed through alliance relationships. These are tested empirically in biotech industry setting, which is representative industries that emphasize external collaboration. Using patent count as a proxy creation, Poisson regression was employed to test our predictions empirically. The statistical results show an inverted U -shaped relationship between creation. In addition, negative...

Abstract New organic THz generators are designed herein by molecular engineering of the refractive index, phonon mode, and spatial asymmetry. These benzothiazolium crystals simultaneously satisfy crucial requirements for efficient wave generation, including having nonlinear optical chromophores with parallel alignment that provide large nonlinearity; good phase matching enhancing generation efficiency in near‐infrared region; strong intermolecular interactions restraining self‐absorption;...

Abstract A series of fluorescent molecular rotors obtained by introducing two rotational groups (“rotators”), which exhibit different and electron‐donating abilities, are discussed. Whereas the control rotor, PH, includes a single rotator (the widely used phenyl group), PO consist rotators (a group an alkoxy simultaneous strongly easy abilities. Compared with rotor exhibited one order magnitude higher quantum yield (fluorescence intensity) simultaneously significantly fluorescence contrast....

Improving the stability, bioavailability, and processability of active pharmaceutical ingredients (APIs) has been key research goal in field crystallization. Cocrystallization considered as an effective route to achieve this goal, intense over decades revealed cocrystals many APIs. However, most cocrystal formers have designed based primarily on their molecular interactions not health benefits. Herein, we choose naringenin (N), a natural flavonoid, novel former it efficacies ability form...

Abstract A new approach for the molecular design of highly efficient nonlinear optical organic crystals is proposed by introducing substituents that form σ‐holes on both cationic chromophores and aromatic anions. Introducing chlorinated substituents, in which a relatively positive σ‐hole negative belt coexist, provides selective reduction capability specific π–π intermolecular interactions simultaneous multiple secondary bonding capabilities. This leads to crystalline state with enhanced...