The cocrystallization method that combines various constituents into cocrystals yields the newly formed materials with significantly enhanced charge transport properties. However, this strategy has not been greatly utilized in all-conjugated block copolymers (BCPs). Herein, we scrutinize the relationship between cocrystals and charge mobilities in all-conjugated BCPs (i.e., poly(3butylthiophene)-block-poly(3-hexylthiophene); denoted P3BT-b-P3HT) by tuning their molecular weights and thermal annealing process. All the rod−rod BCPs form cocrystals with high charge mobilities than P3BT and P3HT homopolymers and P3BT/P3HT blend, imparting the cocrystal-facilitated charge transport because of the synergy of two conjugated components. Upon 150 °C treatment, their crystallinities increase and their charge mobilities at 15k, 18k, and 28k increase slightly. In contrast, P3BT-b-P3HT-12k shows decreased charge mobilities. It is due to the preferential increase of crystal size and order through the π−π stacking direction in the former while through the alkyl stacking direction in the latter. Intriguingly, when these P3BT-b-P3HT cocrystals experience two-step thermal treatment, P3BT-b-P3HT-12k retains its cocrystalline structure, while microphase separation of P3BT and P3HT occurs in P3BT-b-P3HT-15k, 18k, and 28k with different degrees. All P3BT-b-P3HT BCPs exhibit decreased charge mobilities. This study demonstrates the cocrystallization-promoted charge mobility in all-conjugated BCPs, which may facilitate their application in a wide range of optoelectronic devices.

The ability to direct semiconducting polymers and inorganic nanomaterials into complex assemblies renders the creation of organic−inorganic nanocomposites with unique properties and functionalities. Herein, we report the crafting of highly interconnected semiconducting organic−inorganic nanocomposites (referred to as nanojunctions) comprising long poly(3hexylthiophene) (P3HT) nanowires and lead telluride (PbTe) quantum dots (QDs) via two successive self-assembly processes. First, P3HT chains self-assemble into ultralong one-dimensional (1D) nanowires owing to interchain π−π stacking, followed by self-assembly of PbTe QDs on both sides of the P3HT nanowires driven by attractive van der Waals interactions between the hexyl side chains of P3HT and aliphatic chains capped on the surface of PbTe QDs. Notably, an integrated experimental and Monte Carlo (MC) simulation study reveals that the surface coverage of PbTe QDs within the P3HT/PbTe nanojunctions as well as the distance between adjacent PbTe QDs could be conveniently tailored via tuning the QD concentration. Interestingly, the photoluminescence of P3HT progressively decreases with an increased loading of PbTe QDs because of effective charge transfer from P3HT to PbTe. Conceptually, this two-step self-assembly strategy can be readily extended to other semiconducting polymers and a diversity of nanomaterials for potential applications in optoelectronic materials and devices.

for use in catalysis and optoelectronic materials, etc. [7] As the fabrication of litho graphic templates usually invokes costly and multistep procedures, it is highly desirable to employ nonlithographic tem plates for creating hierarchically assem bled micelles."Breath figure" method has been widely recognized as an extremely simple and nonlithographic route to yield intriguing 2D or 3D honeycomb structures. [8][9][10] This approach involves evaporating a layer of solution that spreads on a flat support under a flow of moist gas. When solvent and water droplets evaporate completely, an ordered honeycomb array of macro porous films is formed. Notably, this is a onestep selfassembly process, which can be readily extended to a diversity of mate rials. [11][12][13][14][15][16][17] It is interesting to note that when decreasing the concentration of sol utes, the honeycomb films can transform into a set of isolated rings. [18,19] However, hierarchically assem bled rings composed of block copolymer micelles in breath figure method have not yet been largely explored.Herein, we report on a simple route to crafting hierar chically necklacelike structures of an amphiphilic diblock copoly mer (i.e., polystyreneblockpoly(4vinylpyridine) (PS bP4VP)) micelles by combining two concurrent selfassembling processes at different scales, namely, the breath figure strategy of the PSbP4VP solution evaporating in humid air to form rings at the microscopic scale and a spontaneous selfassembly of PSbP4VP micelles within individual ring at the nanometer scale. Remarkably, hierarchical gold necklacelike assemblies or lightemitting assemblies can be also produced by evapo rating the PSbP4VP/gold precursor solution or PSbP4VP/ fluorescent dyes solution in humid air. Quite intriguingly, corecorona inversion of micelles within the rings occurred in response to P4VPselective solvents, while such corecorona inversion was prohibited when the PSbP4VP micelles were loaded with gold precursors. A model is proposed to rationalize the occurrence or inhibition of corecorona inversion within the micelles. This simple and facile strategy may be potentially applicable to assemble a set of functional block copolymer micelles and inorganic nanocrystals into hierarchical organicinorganic nanohybrid rings for a wide range of applications in optics, electronics, optoelectronics, sensory devices, etc.As toluene is a selective solvent for the PS block while a poor solvent for the P4VP block, spherical micelles with an average diameter of ≈52 nm were formed in toluene, consisting of A hierarchically assembled necklace composed of amphiphilic diblock copoly mer micelles is exquisitely produced by capitalizing on two concurrent self-assembly processes at different scales (i.e., "breath figure" strategy of diblock copolymer micelles solution evaporating in humid air to yield rings at the microscopic scale in conjunction with self-assembly of diblock copolymer micelles within individual ring at the nanometer scale). Intriguingly, hierarchical rings of diblock copolym...

In recent years, school-enterprise collaborative education has become the subject of research in higher vocational colleges. The article explores the significance of school-enterprise collaborative education and the construction of school-enterprise collaborative education mechanism. At the same time, through years of practice, it has proposed the establishment of a "gradual" talent training class system, a "one hospital one case" curriculum system, a "production and teaching sharing" joint team, a school-enterprise complementary practice base, and an off-campus craftsman spirit practice base, practical teaching 6S professional standardization and breeding system and other enterprise college talent training system.

Engineering Economy is the core course of construction cost specialty, which contains more ideological and political resources. Therefore, from the perspective of "curriculum ideological and political", this paper enumerates the ideological and political resources contained in each chapter of the course, with the help of corresponding cases, and discusses the implementation path of ideological and political resources such as "craftsmanship", "campus online loan" and "sustainable development".